P. 419 of Theorem List - Metamath Proof Explorer

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**Theorem List for Metamath Proof Explorer -** 41801-41900 *Has distinct variable group(s)
Type	Label	Description
Statement

Theorem	mapdpglem11 41801*	Lemma for mapdpg 41825. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) ⇒ ⊢ (𝜑 → 𝑔 ≠ 0 )

Theorem	mapdpglem12 41802*	Lemma for mapdpg 41825. TODO: Can some commonality with mapdpglem6 41797 through mapdpglem11 41801 be exploited? Also, some consolidation of small lemmas here could be done. (Contributed by NM, 18-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ (𝜑 → 𝑧 = (0_g‘𝐶)) ⇒ ⊢ (𝜑 → 𝑡 ∈ (𝑀‘(𝑁‘{𝑋})))

Theorem	mapdpglem13 41803*	Lemma for mapdpg 41825. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ (𝜑 → 𝑧 = (0_g‘𝐶)) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑋 − 𝑌)}) ⊆ (𝑁‘{𝑋}))

Theorem	mapdpglem14 41804*	Lemma for mapdpg 41825. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ (𝜑 → 𝑧 = (0_g‘𝐶)) ⇒ ⊢ (𝜑 → 𝑌 ∈ (𝑁‘{𝑋}))

Theorem	mapdpglem15 41805*	Lemma for mapdpg 41825. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ (𝜑 → 𝑧 = (0_g‘𝐶)) ⇒ ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑌}))

Theorem	mapdpglem16 41806*	Lemma for mapdpg 41825. Baer p. 45, line 7: "Likewise we see that z =/= 0." (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) ⇒ ⊢ (𝜑 → 𝑧 ≠ (0_g‘𝐶))

Theorem	mapdpglem17N 41807*	Lemma for mapdpg 41825. Baer p. 45, line 7: "Hence we may form y' = g^-1 z." (Contributed by NM, 20-Mar-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → 𝐸 ∈ 𝐹)

Theorem	mapdpglem18 41808*	Lemma for mapdpg 41825. Baer p. 45, line 7: "Then y =/= 0..." (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → 𝐸 ≠ (0_g‘𝐶))

Theorem	mapdpglem19 41809*	Lemma for mapdpg 41825. Baer p. 45, line 8: "...is in (Fy)*..." (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → 𝐸 ∈ (𝑀‘(𝑁‘{𝑌})))

Theorem	mapdpglem20 41810*	Lemma for mapdpg 41825. Baer p. 45, line 8: "...so that (Fy)*=Gy'." (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝐸}))

Theorem	mapdpglem21 41811*	Lemma for mapdpg 41825. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → (((inv_r‘𝐴)‘𝑔) · 𝑡) = (𝐺𝑅𝐸))

Theorem	mapdpglem22 41812*	Lemma for mapdpg 41825. Baer p. 45, line 9: "(F(x-y))* = ... = G(x'-y')." (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝐸)}))

Theorem	mapdpglem23 41813*	Lemma for mapdpg 41825. Baer p. 45, line 10: "and so y' meets all our requirements." Our ℎ is Baer's y'. (Contributed by NM, 20-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ ⊕ = (LSSum‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ (𝜑 → 𝑡 ∈ ((𝑀‘(𝑁‘{𝑋})) ⊕ (𝑀‘(𝑁‘{𝑌})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ 𝑄 = (0_g‘𝑈) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{𝑡})) & ⊢ 0 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑔 ∈ 𝐵) & ⊢ (𝜑 → 𝑧 ∈ (𝑀‘(𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑡 = ((𝑔 · 𝐺)𝑅𝑧)) & ⊢ (𝜑 → 𝑋 ≠ 𝑄) & ⊢ (𝜑 → 𝑌 ≠ 𝑄) & ⊢ 𝐸 = (((inv_r‘𝐴)‘𝑔) · 𝑧) ⇒ ⊢ (𝜑 → ∃ℎ ∈ 𝐹 ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))

Theorem	mapdpglem30a 41814	Lemma for mapdpg 41825. (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) ⇒ ⊢ (𝜑 → 𝐺 ≠ (0_g‘𝐶))

Theorem	mapdpglem30b 41815	Lemma for mapdpg 41825. (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) ⇒ ⊢ (𝜑 → 𝑖 ≠ (0_g‘𝐶))

Theorem	mapdpglem25 41816	Lemma for mapdpg 41825. Baer p. 45 line 12: "Then we have Gy' = Gy'' and G(x'-y') = G(x'-y'')." (Contributed by NM, 21-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) ⇒ ⊢ (𝜑 → ((𝐽‘{ℎ}) = (𝐽‘{𝑖}) ∧ (𝐽‘{(𝐺𝑅ℎ)}) = (𝐽‘{(𝐺𝑅𝑖)})))

Theorem	mapdpglem26 41817*	Lemma for mapdpg 41825. Baer p. 45 line 14: "Consequently there exist numbers u,v in G neither of which is 0 such that y = uy'' and..." (We scope $d 𝑢𝜑 locally to avoid clashes with later substitutions into 𝜑.) (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) ⇒ ⊢ (𝜑 → ∃𝑢 ∈ (𝐵 ∖ {𝑂})ℎ = (𝑢 · 𝑖))

Theorem	mapdpglem27 41818*	Lemma for mapdpg 41825. Baer p. 45 line 16: "v(x'-y'') = x'-y'" (with equality swapped). (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) ⇒ ⊢ (𝜑 → ∃𝑣 ∈ (𝐵 ∖ {𝑂})(𝐺𝑅ℎ) = (𝑣 · (𝐺𝑅𝑖)))

Theorem	mapdpglem29 41819*	Lemma for mapdpg 41825. Baer p. 45 line 16: "But Gx' and Gy'' are distinct points and so x' and y'' are independent elements in B. (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑣 ∈ 𝐵) & ⊢ (𝜑 → ℎ = (𝑢 · 𝑖)) & ⊢ (𝜑 → (𝐺𝑅ℎ) = (𝑣 · (𝐺𝑅𝑖))) ⇒ ⊢ (𝜑 → (𝐽‘{𝐺}) ≠ (𝐽‘{𝑖}))

Theorem	mapdpglem28 41820*	Lemma for mapdpg 41825. Baer p. 45 line 18: "vx'-vy'' = x'-uy''". (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑣 ∈ 𝐵) & ⊢ (𝜑 → ℎ = (𝑢 · 𝑖)) & ⊢ (𝜑 → (𝐺𝑅ℎ) = (𝑣 · (𝐺𝑅𝑖))) ⇒ ⊢ (𝜑 → ((𝑣 · 𝐺)𝑅(𝑣 · 𝑖)) = (𝐺𝑅(𝑢 · 𝑖)))

Theorem	mapdpglem30 41821*	Lemma for mapdpg 41825. Baer p. 45 line 18: "Hence we deduce (from mapdpglem28 41820, using lvecindp2 21078) that v = 1 and v = u...". TODO: would it be shorter to have only the 𝑣 = (1_r‘𝐴) part and use mapdpglem28.u2 in mapdpglem31 41822? (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑣 ∈ 𝐵) & ⊢ (𝜑 → ℎ = (𝑢 · 𝑖)) & ⊢ (𝜑 → (𝐺𝑅ℎ) = (𝑣 · (𝐺𝑅𝑖))) & ⊢ (𝜑 → 𝑢 ∈ 𝐵) ⇒ ⊢ (𝜑 → (𝑣 = (1_r‘𝐴) ∧ 𝑣 = 𝑢))

Theorem	mapdpglem31 41822*	Lemma for mapdpg 41825. Baer p. 45 line 19: "...and we have consequently that y' = y'', as we claimed." (Contributed by NM, 23-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (ℎ ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))) & ⊢ (𝜑 → (𝑖 ∈ 𝐹 ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) & ⊢ 𝐴 = (Scalar‘𝑈) & ⊢ 𝐵 = (Base‘𝐴) & ⊢ · = ( ·_𝑠 ‘𝐶) & ⊢ 𝑂 = (0_g‘𝐴) & ⊢ (𝜑 → 𝑣 ∈ 𝐵) & ⊢ (𝜑 → ℎ = (𝑢 · 𝑖)) & ⊢ (𝜑 → (𝐺𝑅ℎ) = (𝑣 · (𝐺𝑅𝑖))) & ⊢ (𝜑 → 𝑢 ∈ 𝐵) ⇒ ⊢ (𝜑 → ℎ = 𝑖)

Theorem	mapdpglem24 41823*	Lemma for mapdpg 41825. Existence part - consolidate hypotheses in mapdpglem23 41813. (Contributed by NM, 21-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) ⇒ ⊢ (𝜑 → ∃ℎ ∈ 𝐹 ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))

Theorem	mapdpglem32 41824*	Lemma for mapdpg 41825. Uniqueness part - consolidate hypotheses in mapdpglem31 41822. (Contributed by NM, 23-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) ⇒ ⊢ ((𝜑 ∧ (ℎ ∈ 𝐹 ∧ 𝑖 ∈ 𝐹) ∧ (((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})) ∧ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝑖}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅𝑖)})))) → ℎ = 𝑖)

Theorem	mapdpg 41825*	Part 1 of proof of the first fundamental theorem of projective geometry. Part (1) in [Baer] p. 44. Our notation corresponds to Baer's as follows: 𝑀 for *, 𝑁‘{} for F(), 𝐽‘{} for G(), 𝑋 for x, 𝐺 for x', 𝑌 for y, ℎ for y'. TODO: Rename variables per mapdhval 41843. (Contributed by NM, 22-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐹) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐺})) ⇒ ⊢ (𝜑 → ∃!ℎ ∈ 𝐹 ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐺𝑅ℎ)})))

Theorem	baerlem3lem1 41826	Lemma for baerlem3 41832. (Contributed by NM, 9-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) & ⊢ (𝜑 → 𝑎 ∈ 𝐵) & ⊢ (𝜑 → 𝑏 ∈ 𝐵) & ⊢ (𝜑 → 𝑑 ∈ 𝐵) & ⊢ (𝜑 → 𝑒 ∈ 𝐵) & ⊢ (𝜑 → 𝑗 = ((𝑎 · 𝑌) + (𝑏 · 𝑍))) & ⊢ (𝜑 → 𝑗 = ((𝑑 · (𝑋 − 𝑌)) + (𝑒 · (𝑋 − 𝑍)))) ⇒ ⊢ (𝜑 → 𝑗 = (𝑎 · (𝑌 − 𝑍)))

Theorem	baerlem5alem1 41827	Lemma for baerlem5a 41833. (Contributed by NM, 13-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) & ⊢ (𝜑 → 𝑎 ∈ 𝐵) & ⊢ (𝜑 → 𝑏 ∈ 𝐵) & ⊢ (𝜑 → 𝑑 ∈ 𝐵) & ⊢ (𝜑 → 𝑒 ∈ 𝐵) & ⊢ (𝜑 → 𝑗 = ((𝑎 · (𝑋 − 𝑌)) + (𝑏 · 𝑍))) & ⊢ (𝜑 → 𝑗 = ((𝑑 · (𝑋 − 𝑍)) + (𝑒 · 𝑌))) ⇒ ⊢ (𝜑 → 𝑗 = (𝑎 · (𝑋 − (𝑌 + 𝑍))))

Theorem	baerlem5blem1 41828	Lemma for baerlem5b 41834. (Contributed by NM, 9-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) & ⊢ (𝜑 → 𝑎 ∈ 𝐵) & ⊢ (𝜑 → 𝑏 ∈ 𝐵) & ⊢ (𝜑 → 𝑑 ∈ 𝐵) & ⊢ (𝜑 → 𝑒 ∈ 𝐵) & ⊢ (𝜑 → 𝑗 = ((𝑎 · 𝑌) + (𝑏 · 𝑍))) & ⊢ (𝜑 → 𝑗 = ((𝑑 · (𝑋 − (𝑌 + 𝑍))) + (𝑒 · 𝑋))) ⇒ ⊢ (𝜑 → 𝑗 = ((𝐼‘𝑑) · (𝑌 + 𝑍)))

Theorem	baerlem3lem2 41829	Lemma for baerlem3 41832. (Contributed by NM, 9-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 − 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{(𝑋 − 𝑍)}))))

Theorem	baerlem5alem2 41830	Lemma for baerlem5a 41833. (Contributed by NM, 9-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑋 − (𝑌 + 𝑍))}) = (((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − 𝑍)}) ⊕ (𝑁‘{𝑌}))))

Theorem	baerlem5blem2 41831	Lemma for baerlem5b 41834. (Contributed by NM, 13-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) & ⊢ · = ( ·_𝑠 ‘𝑊) & ⊢ 𝑅 = (Scalar‘𝑊) & ⊢ 𝐵 = (Base‘𝑅) & ⊢ ⨣ = (+_g‘𝑅) & ⊢ 𝐿 = (-_g‘𝑅) & ⊢ 𝑄 = (0_g‘𝑅) & ⊢ 𝐼 = (inv_g‘𝑅) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 + 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − (𝑌 + 𝑍))}) ⊕ (𝑁‘{𝑋}))))

Theorem	baerlem3 41832	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Part (3) in [Baer] p. 45. TODO fix ref. (Contributed by NM, 9-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 − 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{(𝑋 − 𝑍)}))))

Theorem	baerlem5a 41833	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. First equation of part (5) in [Baer] p. 46. (Contributed by NM, 10-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑋 − (𝑌 + 𝑍))}) = (((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − 𝑍)}) ⊕ (𝑁‘{𝑌}))))

Theorem	baerlem5b 41834	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Second equation of part (5) in [Baer] p. 46. (Contributed by NM, 13-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 + 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − (𝑌 + 𝑍))}) ⊕ (𝑁‘{𝑋}))))

Theorem	baerlem5amN 41835	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Subtraction version of first equation of part (5) in [Baer] p. 46. TODO: This is the subtraction version, may not be needed. TODO: delete if baerlem5abmN 41837 is used. (Contributed by NM, 24-May-2015.) (New usage is discouraged.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑋 − (𝑌 − 𝑍))}) = (((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) ⊕ (𝑁‘{𝑌}))))

Theorem	baerlem5bmN 41836	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Subtraction version of second equation of part (5) in [Baer] p. 46. TODO: This is the subtraction version, may not be needed. TODO: delete if baerlem5abmN 41837 is used. (Contributed by NM, 24-May-2015.) (New usage is discouraged.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 − 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − (𝑌 − 𝑍))}) ⊕ (𝑁‘{𝑋}))))

Theorem	baerlem5abmN 41837	An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Subtraction versions of first and second equations of part (5) in [Baer] p. 46, conjoined to share commonality in their proofs. TODO: Delete if not needed. (Contributed by NM, 24-May-2015.) (New usage is discouraged.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ − = (-_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ ⊕ = (LSSum‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑊) ⇒ ⊢ (𝜑 → ((𝑁‘{(𝑋 − (𝑌 − 𝑍))}) = (((𝑁‘{(𝑋 − 𝑌)}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) ⊕ (𝑁‘{𝑌}))) ∧ (𝑁‘{(𝑌 − 𝑍)}) = (((𝑁‘{𝑌}) ⊕ (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 − (𝑌 − 𝑍))}) ⊕ (𝑁‘{𝑋})))))

Theorem	mapdindp0 41838	Vector independence lemma. (Contributed by NM, 29-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ + = (+_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) & ⊢ (𝜑 → (𝑌 + 𝑍) ≠ 0 ) ⇒ ⊢ (𝜑 → (𝑁‘{(𝑌 + 𝑍)}) = (𝑁‘{𝑌}))

Theorem	mapdindp1 41839	Vector independence lemma. (Contributed by NM, 1-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ + = (+_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{(𝑌 + 𝑍)}))

Theorem	mapdindp2 41840	Vector independence lemma. (Contributed by NM, 1-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ + = (+_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, (𝑌 + 𝑍)}))

Theorem	mapdindp3 41841	Vector independence lemma. (Contributed by NM, 29-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ + = (+_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{(𝑤 + 𝑌)}))

Theorem	mapdindp4 41842	Vector independence lemma. (Contributed by NM, 29-Apr-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ + = (+_g‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → ¬ 𝑍 ∈ (𝑁‘{𝑋, (𝑤 + 𝑌)}))

Theorem	mapdhval 41843*	Lemmma for ~? mapdh . (Contributed by NM, 3-Apr-2015.) (Revised by Mario Carneiro, 6-May-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → 𝑋 ∈ 𝐴) & ⊢ (𝜑 → 𝐹 ∈ 𝐵) & ⊢ (𝜑 → 𝑌 ∈ 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = if(𝑌 = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐹𝑅ℎ)})))))

Theorem	mapdhval0 41844*	Lemmma for ~? mapdh . (Contributed by NM, 3-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 0 = (0_g‘𝑈) & ⊢ (𝜑 → 𝑋 ∈ 𝐴) & ⊢ (𝜑 → 𝐹 ∈ 𝐵) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 0 ⟩) = 𝑄)

Theorem	mapdhval2 41845*	Lemmma for ~? mapdh . (Contributed by NM, 3-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → 𝑋 ∈ 𝐴) & ⊢ (𝜑 → 𝐹 ∈ 𝐵) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐹𝑅ℎ)}))))

Theorem	mapdhcl 41846*	Lemmma for ~? mapdh . (Contributed by NM, 3-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ∈ 𝐷)

Theorem	mapdheq 41847*	Lemmma for ~? mapdh . The defining equation for h(x,x',y)=y' in part (2) in [Baer] p. 45 line 24. (Contributed by NM, 4-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐷) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) ⇒ ⊢ (𝜑 → ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺 ↔ ((𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝐺}) ∧ (𝑀‘(𝑁‘{(𝑋 − 𝑌)})) = (𝐽‘{(𝐹𝑅𝐺)}))))

Theorem	mapdheq2 41848*	Lemmma for ~? mapdh . One direction of part (2) in [Baer] p. 45. (Contributed by NM, 4-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐷) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) ⇒ ⊢ (𝜑 → ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺 → (𝐼‘⟨𝑌, 𝐺, 𝑋⟩) = 𝐹))

Theorem	mapdheq2biN 41849*	Lemmma for ~? mapdh . Part (2) in [Baer] p. 45. The bidirectional version of mapdheq2 41848 seems to require an additional hypothesis not mentioned in Baer. TODO fix ref. TODO: We probably don't need this; delete if never used. (Contributed by NM, 4-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝐺 ∈ 𝐷) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝐺})) ⇒ ⊢ (𝜑 → ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺 ↔ (𝐼‘⟨𝑌, 𝐺, 𝑋⟩) = 𝐹))

Theorem	mapdheq4lem 41850*	Lemma for mapdheq4 41851. Part (4) in [Baer] p. 46. (Contributed by NM, 12-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑌 − 𝑍)})) = (𝐽‘{(𝐺𝑅𝐸)}))

Theorem	mapdheq4 41851*	Lemma for ~? mapdh . Part (4) in [Baer] p. 46. (Contributed by NM, 12-Apr-2015.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑍⟩) = 𝐸)

Theorem	mapdh6lem1N 41852*	Lemma for mapdh6N 41866. Part (6) in [Baer] p. 47, lines 16-18. (Contributed by NM, 13-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑋 − (𝑌 + 𝑍))})) = (𝐽‘{(𝐹𝑅(𝐺 ✚ 𝐸))}))

Theorem	mapdh6lem2N 41853*	Lemma for mapdh6N 41866. Part (6) in [Baer] p. 47, lines 20-22. (Contributed by NM, 13-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{(𝑌 + 𝑍)})) = (𝐽‘{(𝐺 ✚ 𝐸)}))

Theorem	mapdh6aN 41854*	Lemma for mapdh6N 41866. Part (6) in [Baer] p. 47, case 1. (Contributed by NM, 23-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6b0N 41855*	Lemmma for mapdh6N 41866. (Contributed by NM, 23-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ((𝑁‘{𝑋}) ∩ (𝑁‘{𝑌, 𝑍})) = { 0 }) ⇒ ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍}))

Theorem	mapdh6bN 41856*	Lemmma for mapdh6N 41866. (Contributed by NM, 24-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 = 0 ) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6cN 41857*	Lemmma for mapdh6N 41866. (Contributed by NM, 24-Apr-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 = 0 ) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6dN 41858*	Lemmma for mapdh6N 41866. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑤 + (𝑌 + 𝑍))⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑤⟩) ✚ (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩)))

Theorem	mapdh6eN 41859*	Lemmma for mapdh6N 41866. Part (6) in [Baer] p. 47 line 38. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, ((𝑤 + 𝑌) + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, (𝑤 + 𝑌)⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6fN 41860*	Lemmma for mapdh6N 41866. Part (6) in [Baer] p. 47 line 38. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑤 + 𝑌)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑤⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑌⟩)))

Theorem	mapdh6gN 41861*	Lemmma for mapdh6N 41866. Part (6) of [Baer] p. 47 line 39. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → ((𝐼‘⟨𝑋, 𝐹, 𝑤⟩) ✚ (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩)) = (((𝐼‘⟨𝑋, 𝐹, 𝑤⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑌⟩)) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6hN 41862*	Lemmma for mapdh6N 41866. Part (6) of [Baer] p. 48 line 2. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6iN 41863*	Lemmma for mapdh6N 41866. Eliminate auxiliary vector 𝑤. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) = (𝑁‘{𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6jN 41864*	Lemmma for mapdh6N 41866. Eliminate (𝑁‘{𝑌}) = (𝑁‘{𝑍}) hypothesis. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6kN 41865*	Lemmma for mapdh6N 41866. Eliminate nonzero vector requirement. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ + = (+_g‘𝑈) & ⊢ ✚ = (+_g‘𝐶) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh6N 41866*	Part (6) of [Baer] p. 47 line 6. Note that we use ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍}) which is equivalent to Baer's "Fx ∩ (Fy + Fz)" by lspdisjb 21065. TODO: If disjoint variable conditions with 𝐼 and 𝜑 become a problem later, use cbv* theorems on 𝐼 variables here to get rid of them. Maybe reorder hypotheses in lemmas to the more consistent order of this theorem, so they can be shared with this theorem. TODO: may be deleted (with its lemmas), if not needed, in view of hdmap1l6 41940. (Contributed by NM, 1-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ + = (+_g‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ ✚ = (+_g‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, (𝑌 + 𝑍)⟩) = ((𝐼‘⟨𝑋, 𝐹, 𝑌⟩) ✚ (𝐼‘⟨𝑋, 𝐹, 𝑍⟩)))

Theorem	mapdh7eN 41867*	Part (7) of [Baer] p. 48 line 10 (5 of 6 cases). (Note: 1 of 6 and 2 of 6 are hypotheses a and b.) (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑢})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑢 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑣 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑢}) ≠ (𝑁‘{𝑣})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑢, 𝑣})) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑤⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑤, 𝐸, 𝑢⟩) = 𝐹)

Theorem	mapdh7cN 41868*	Part (7) of [Baer] p. 48 line 10 (3 of 6 cases). (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑢})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑢 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑣 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑢}) ≠ (𝑁‘{𝑣})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑢, 𝑣})) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑣⟩) = 𝐺) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑣, 𝐺, 𝑢⟩) = 𝐹)

Theorem	mapdh7dN 41869*	Part (7) of [Baer] p. 48 line 10 (4 of 6 cases). (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑢})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑢 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑣 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑢}) ≠ (𝑁‘{𝑣})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑢, 𝑣})) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑣⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑤⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑣, 𝐺, 𝑤⟩) = 𝐸)

Theorem	mapdh7fN 41870*	Part (7) of [Baer] p. 48 line 10 (6 of 6 cases). (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑢})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → 𝑢 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑣 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑢}) ≠ (𝑁‘{𝑣})) & ⊢ (𝜑 → ¬ 𝑤 ∈ (𝑁‘{𝑢, 𝑣})) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑣⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑢, 𝐹, 𝑤⟩) = 𝐸) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑤, 𝐸, 𝑣⟩) = 𝐺)

Theorem	mapdh75e 41871*	Part (7) of [Baer] p. 48 line 10 (5 of 6 cases). 𝑋, 𝑌, 𝑍 are Baer's u, v, w. (Note: Cases 1 of 6 and 2 of 6 are hypotheses mapdh75b here and mapdh75a in mapdh75cN 41872.) (Contributed by NM, 2-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑍, 𝐸, 𝑋⟩) = 𝐹)

Theorem	mapdh75cN 41872*	Part (7) of [Baer] p. 48 line 10 (3 of 6 cases). (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑋⟩) = 𝐹)

Theorem	mapdh75d 41873*	Part (7) of [Baer] p. 48 line 10 (4 of 6 cases). (Contributed by NM, 2-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑍⟩) = 𝐸)

Theorem	mapdh75fN 41874*	Part (7) of [Baer] p. 48 line 10 (6 of 6 cases). (Contributed by NM, 2-May-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑍, 𝐸, 𝑌⟩) = 𝐺)

Syntax	chvm 41875	Extend class notation with vector to dual map.
class HVMap

Definition	df-hvmap 41876*	Extend class notation with a map from each nonzero vector 𝑥 to a unique nonzero functional in the closed kernel dual space. (We could extend it to include the zero vector, but that is unnecessary for our purposes.) TODO: This pattern is used several times earlier, e.g., lcf1o 41670, dochfl1 41595- should we update those to use this definition? (Contributed by NM, 23-Mar-2015.)
⊢ HVMap = (𝑘 ∈ V ↦ (𝑤 ∈ (LHyp‘𝑘) ↦ (𝑥 ∈ ((Base‘((DVecH‘𝑘)‘𝑤)) ∖ {(0_g‘((DVecH‘𝑘)‘𝑤))}) ↦ (𝑣 ∈ (Base‘((DVecH‘𝑘)‘𝑤)) ↦ (℩𝑗 ∈ (Base‘(Scalar‘((DVecH‘𝑘)‘𝑤)))∃𝑡 ∈ (((ocH‘𝑘)‘𝑤)‘{𝑥})𝑣 = (𝑡(+_g‘((DVecH‘𝑘)‘𝑤))(𝑗( ·_𝑠 ‘((DVecH‘𝑘)‘𝑤))𝑥)))))))

Theorem	hvmapffval 41877*	Map from nonzero vectors to nonzero functionals in the closed kernel dual space. (Contributed by NM, 23-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) ⇒ ⊢ (𝐾 ∈ 𝑋 → (HVMap‘𝐾) = (𝑤 ∈ 𝐻 ↦ (𝑥 ∈ ((Base‘((DVecH‘𝐾)‘𝑤)) ∖ {(0_g‘((DVecH‘𝐾)‘𝑤))}) ↦ (𝑣 ∈ (Base‘((DVecH‘𝐾)‘𝑤)) ↦ (℩𝑗 ∈ (Base‘(Scalar‘((DVecH‘𝐾)‘𝑤)))∃𝑡 ∈ (((ocH‘𝐾)‘𝑤)‘{𝑥})𝑣 = (𝑡(+_g‘((DVecH‘𝐾)‘𝑤))(𝑗( ·_𝑠 ‘((DVecH‘𝐾)‘𝑤))𝑥)))))))

Theorem	hvmapfval 41878*	Map from nonzero vectors to nonzero functionals in the closed kernel dual space. (Contributed by NM, 23-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ + = (+_g‘𝑈) & ⊢ · = ( ·_𝑠 ‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑆 = (Scalar‘𝑈) & ⊢ 𝑅 = (Base‘𝑆) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ 𝐴 ∧ 𝑊 ∈ 𝐻)) ⇒ ⊢ (𝜑 → 𝑀 = (𝑥 ∈ (𝑉 ∖ { 0 }) ↦ (𝑣 ∈ 𝑉 ↦ (℩𝑗 ∈ 𝑅 ∃𝑡 ∈ (𝑂‘{𝑥})𝑣 = (𝑡 + (𝑗 · 𝑥))))))

Theorem	hvmapval 41879*	Value of map from nonzero vectors to nonzero functionals in the closed kernel dual space. (Contributed by NM, 23-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ + = (+_g‘𝑈) & ⊢ · = ( ·_𝑠 ‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑆 = (Scalar‘𝑈) & ⊢ 𝑅 = (Base‘𝑆) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ 𝐴 ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑀‘𝑋) = (𝑣 ∈ 𝑉 ↦ (℩𝑗 ∈ 𝑅 ∃𝑡 ∈ (𝑂‘{𝑋})𝑣 = (𝑡 + (𝑗 · 𝑋)))))

Theorem	hvmapvalvalN 41880*	Value of value of map (i.e. functional value) from nonzero vectors to nonzero functionals in the closed kernel dual space. (Contributed by NM, 23-Mar-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ + = (+_g‘𝑈) & ⊢ · = ( ·_𝑠 ‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑆 = (Scalar‘𝑈) & ⊢ 𝑅 = (Base‘𝑆) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ 𝐴 ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) ⇒ ⊢ (𝜑 → ((𝑀‘𝑋)‘𝑌) = (℩𝑗 ∈ 𝑅 ∃𝑡 ∈ (𝑂‘{𝑋})𝑌 = (𝑡 + (𝑗 · 𝑋))))

Theorem	hvmapidN 41881	The value of the vector to functional map, at the vector, is one. (Contributed by NM, 23-Mar-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑆 = (Scalar‘𝑈) & ⊢ 1 = (1_r‘𝑆) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → ((𝑀‘𝑋)‘𝑋) = 1 )

Theorem	hvmap1o 41882*	The vector to functional map provides a bijection from nonzero vectors 𝑉 to nonzero functionals with closed kernels 𝐶. (Contributed by NM, 27-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐹 = (LFnl‘𝑈) & ⊢ 𝐿 = (LKer‘𝑈) & ⊢ 𝐷 = (LDual‘𝑈) & ⊢ 𝑄 = (0_g‘𝐷) & ⊢ 𝐶 = {𝑓 ∈ 𝐹 ∣ (𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓)} & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) ⇒ ⊢ (𝜑 → 𝑀:(𝑉 ∖ { 0 })–1-1-onto→(𝐶 ∖ {𝑄}))

Theorem	hvmapclN 41883*	Closure of the vector to functional map. (Contributed by NM, 27-Mar-2015.) (New usage is discouraged.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐹 = (LFnl‘𝑈) & ⊢ 𝐿 = (LKer‘𝑈) & ⊢ 𝐷 = (LDual‘𝑈) & ⊢ 𝑄 = (0_g‘𝐷) & ⊢ 𝐶 = {𝑓 ∈ 𝐹 ∣ (𝑂‘(𝑂‘(𝐿‘𝑓))) = (𝐿‘𝑓)} & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑀‘𝑋) ∈ (𝐶 ∖ {𝑄}))

Theorem	hvmap1o2 41884	The vector to functional map provides a bijection from nonzero vectors 𝑉 to nonzero functionals with closed kernels 𝐶. (Contributed by NM, 27-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑂 = (0_g‘𝐶) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) ⇒ ⊢ (𝜑 → 𝑀:(𝑉 ∖ { 0 })–1-1-onto→(𝐹 ∖ {𝑂}))

Theorem	hvmapcl2 41885	Closure of the vector to functional map. (Contributed by NM, 27-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐹 = (Base‘𝐶) & ⊢ 𝑂 = (0_g‘𝐶) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑀‘𝑋) ∈ (𝐹 ∖ {𝑂}))

Theorem	hvmaplfl 41886	The vector to functional map value is a functional. (Contributed by NM, 28-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐹 = (LFnl‘𝑈) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑀‘𝑋) ∈ 𝐹)

Theorem	hvmaplkr 41887	Kernel of the vector to functional map. TODO: make this become lcfrlem11 41672. (Contributed by NM, 29-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑂 = ((ocH‘𝐾)‘𝑊) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝐿 = (LKer‘𝑈) & ⊢ 𝑀 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝐿‘(𝑀‘𝑋)) = (𝑂‘{𝑋}))

Theorem	mapdhvmap 41888	Relationship between mapd and HVMap, which can be used to satisfy the last hypothesis of mapdpg 41825. Equation 10 of [Baer] p. 48. (Contributed by NM, 29-Mar-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝑃 = ((HVMap‘𝐾)‘𝑊) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) ⇒ ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{(𝑃‘𝑋)}))

Theorem	lspindp5 41889	Obtain an independent vector set 𝑈, 𝑋, 𝑌 from a vector 𝑈 dependent on 𝑋 and 𝑍 and another independent set 𝑍, 𝑋, 𝑌. (Here we don't show the (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}) part of the independence, which passes straight through. We also don't show nonzero vector requirements that are redundant for this theorem. Different orderings can be obtained using lspexch 21068 and prcom 4684.) (Contributed by NM, 4-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑈 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 ∈ (𝑁‘{𝑋, 𝑈})) & ⊢ (𝜑 → ¬ 𝑍 ∈ (𝑁‘{𝑋, 𝑌})) ⇒ ⊢ (𝜑 → ¬ 𝑈 ∈ (𝑁‘{𝑋, 𝑌}))

Theorem	hdmaplem1 41890	Lemma to convert a frequently-used union condition. TODO: see if this can be applied to other hdmap* theorems. (Contributed by NM, 17-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LMod) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑍 ∈ ((𝑁‘{𝑋}) ∪ (𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) ⇒ ⊢ (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑋}))

Theorem	hdmaplem2N 41891	Lemma to convert a frequently-used union condition. TODO: see if this can be applied to other hdmap* theorems. (Contributed by NM, 17-May-2015.) (New usage is discouraged.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LMod) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑍 ∈ ((𝑁‘{𝑋}) ∪ (𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) ⇒ ⊢ (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑌}))

Theorem	hdmaplem3 41892	Lemma to convert a frequently-used union condition. TODO: see if this can be applied to other hdmap* theorems. (Contributed by NM, 17-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LMod) & ⊢ (𝜑 → 𝑍 ∈ 𝑉) & ⊢ (𝜑 → ¬ 𝑍 ∈ ((𝑁‘{𝑋}) ∪ (𝑁‘{𝑌}))) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ 0 = (0_g‘𝑊) ⇒ ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 }))

Theorem	hdmaplem4 41893	Lemma to convert a frequently-used union condition. TODO: see if this can be applied to other hdmap* theorems. (Contributed by NM, 17-May-2015.)
⊢ 𝑉 = (Base‘𝑊) & ⊢ 𝑁 = (LSpan‘𝑊) & ⊢ 0 = (0_g‘𝑊) & ⊢ (𝜑 → 𝑊 ∈ LVec) & ⊢ (𝜑 → 𝑋 ∈ 𝑉) & ⊢ (𝜑 → 𝑌 ∈ 𝑉) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑋})) & ⊢ (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑌})) ⇒ ⊢ (𝜑 → ¬ 𝑍 ∈ ((𝑁‘{𝑋}) ∪ (𝑁‘{𝑌})))

Theorem	mapdh8a 41894*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 5-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑇})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑇⟩) = (𝐼‘⟨𝑋, 𝐹, 𝑇⟩))

Theorem	mapdh8aa 41895*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 12-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → ¬ 𝑌 ∈ (𝑁‘{𝑍, 𝑇})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑇⟩) = (𝐼‘⟨𝑍, 𝐸, 𝑇⟩))

Theorem	mapdh8ab 41896*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 13-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍})) & ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑇})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑇⟩) = (𝐼‘⟨𝑍, 𝐸, 𝑇⟩))

Theorem	mapdh8ac 41897*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 13-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑇})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑤⟩) = 𝐵) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑤})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑤})) & ⊢ (𝜑 → (𝑁‘{𝑤}) ≠ (𝑁‘{𝑍})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑤, 𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑇⟩) = (𝐼‘⟨𝑍, 𝐸, 𝑇⟩))

Theorem	mapdh8ad 41898*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 13-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑌⟩) = 𝐺) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑍⟩) = 𝐸) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑍 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑋}) = (𝑁‘{𝑇})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑇⟩) = (𝐼‘⟨𝑍, 𝐸, 𝑇⟩))

Theorem	mapdh8b 41899*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 6-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐺 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑌})) = (𝐽‘{𝐺})) & ⊢ (𝜑 → (𝐼‘⟨𝑌, 𝐺, 𝑤⟩) = 𝐸) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑤}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑤})) & ⊢ (𝜑 → 𝑋 ∈ (𝑁‘{𝑌, 𝑇})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑤})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑤, 𝐸, 𝑇⟩) = (𝐼‘⟨𝑌, 𝐺, 𝑇⟩))

Theorem	mapdh8c 41900*	Part of Part (8) in [Baer] p. 48. (Contributed by NM, 6-May-2015.)
⊢ 𝐻 = (LHyp‘𝐾) & ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊) & ⊢ 𝑉 = (Base‘𝑈) & ⊢ − = (-_g‘𝑈) & ⊢ 0 = (0_g‘𝑈) & ⊢ 𝑁 = (LSpan‘𝑈) & ⊢ 𝐶 = ((LCDual‘𝐾)‘𝑊) & ⊢ 𝐷 = (Base‘𝐶) & ⊢ 𝑅 = (-_g‘𝐶) & ⊢ 𝑄 = (0_g‘𝐶) & ⊢ 𝐽 = (LSpan‘𝐶) & ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊) & ⊢ 𝐼 = (𝑥 ∈ V ↦ if((2^nd ‘𝑥) = 0 , 𝑄, (℩ℎ ∈ 𝐷 ((𝑀‘(𝑁‘{(2^nd ‘𝑥)})) = (𝐽‘{ℎ}) ∧ (𝑀‘(𝑁‘{((1^st ‘(1^st ‘𝑥)) − (2^nd ‘𝑥))})) = (𝐽‘{((2^nd ‘(1^st ‘𝑥))𝑅ℎ)}))))) & ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻)) & ⊢ (𝜑 → 𝐹 ∈ 𝐷) & ⊢ (𝜑 → (𝑀‘(𝑁‘{𝑋})) = (𝐽‘{𝐹})) & ⊢ (𝜑 → (𝐼‘⟨𝑋, 𝐹, 𝑤⟩) = 𝐸) & ⊢ (𝜑 → 𝑋 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑌 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → 𝑇 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → 𝑤 ∈ (𝑉 ∖ { 0 })) & ⊢ (𝜑 → (𝑁‘{𝑤}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑇})) & ⊢ (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑤})) & ⊢ (𝜑 → 𝑋 ∈ (𝑁‘{𝑌, 𝑇})) & ⊢ (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑤})) ⇒ ⊢ (𝜑 → (𝐼‘⟨𝑤, 𝐸, 𝑇⟩) = (𝐼‘⟨𝑋, 𝐹, 𝑇⟩))

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