resvval2 - Mathbox for Thierry Arnoux

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Theorem resvval2 33340

Description: Value of nontrivial structure restriction. (Contributed by Thierry Arnoux, 6-Sep-2018.)

**Hypotheses**
Ref	Expression
resvsca.r	⊢ 𝑅 = (𝑊 ↾_v 𝐴)
resvsca.f	⊢ 𝐹 = (Scalar‘𝑊)
resvsca.b	⊢ 𝐵 = (Base‘𝐹)

**Assertion**
Ref	Expression
resvval2	⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩))

**Proof of Theorem resvval2**
Step	Hyp	Ref	Expression
1		resvsca.r	. . . 4 ⊢ 𝑅 = (𝑊 ↾_v 𝐴)
2		resvsca.f	. . . 4 ⊢ 𝐹 = (Scalar‘𝑊)
3		resvsca.b	. . . 4 ⊢ 𝐵 = (Base‘𝐹)
4	1, 2, 3	resvval 33338	. . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩)))
5		iffalse 4485	. . 3 ⊢ (¬ 𝐵 ⊆ 𝐴 → if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩)) = (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩))
6	4, 5	sylan9eqr 2790	. 2 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ (𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌)) → 𝑅 = (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩))
7	6	3impb 1114	1 ⊢ ((¬ 𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = (𝑊 sSet ⟨(Scalar‘ndx), (𝐹 ↾_s 𝐴)⟩))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ⊆ wss 3898 ifcif 4476 ⟨cop 4583 ‘cfv 6489 (class class class)co 7355 sSet csts 17081 ndxcnx 17111 Basecbs 17127 ↾_s cress 17148 Scalarcsca 17171 ↾_v cresv 33335

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5238 ax-nul 5248 ax-pr 5374

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-ral 3049 df-rex 3058 df-rab 3397 df-v 3439 df-sbc 3738 df-dif 3901 df-un 3903 df-ss 3915 df-nul 4283 df-if 4477 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-br 5096 df-opab 5158 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-iota 6445 df-fun 6491 df-fv 6497 df-ov 7358 df-oprab 7359 df-mpo 7360 df-resv 33336

This theorem is referenced by: resvsca 33341 resvlem 33342

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