Theorem bnj1518 35057

Description: Technical lemma for bnj1500 35061. This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)

Hypotheses

Ref	Expression
bnj1518.1	⊢ 𝐵 = {𝑑 ∣ (𝑑 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝑑 pred(𝑥, 𝐴, 𝑅) ⊆ 𝑑)}
bnj1518.2	⊢ 𝑌 = ⟨𝑥, (𝑓 ↾ pred(𝑥, 𝐴, 𝑅))⟩
bnj1518.3	⊢ 𝐶 = {𝑓 ∣ ∃𝑑 ∈ 𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥 ∈ 𝑑 (𝑓‘𝑥) = (𝐺‘𝑌))}
bnj1518.4	⊢ 𝐹 = ∪ 𝐶
bnj1518.5	⊢ (𝜑 ↔ (𝑅 FrSe 𝐴 ∧ 𝑥 ∈ 𝐴))
bnj1518.6	⊢ (𝜓 ↔ (𝜑 ∧ 𝑓 ∈ 𝐶 ∧ 𝑥 ∈ dom 𝑓))

Assertion

Ref	Expression
bnj1518	⊢ (𝜓 → ∀𝑑𝜓)

Distinct variable groups:   𝑓,𝑑   𝜑,𝑑   𝑥,𝑑

Allowed substitution hints:   𝜑(𝑥,𝑓)   𝜓(𝑥,𝑓,𝑑)   𝐴(𝑥,𝑓,𝑑)   𝐵(𝑥,𝑓,𝑑)   𝐶(𝑥,𝑓,𝑑)   𝑅(𝑥,𝑓,𝑑)   𝐹(𝑥,𝑓,𝑑)   𝐺(𝑥,𝑓,𝑑)   𝑌(𝑥,𝑓,𝑑)

Proof of Theorem bnj1518

Step	Hyp	Ref	Expression
1		bnj1518.6	. . 3 ⊢ (𝜓 ↔ (𝜑 ∧ 𝑓 ∈ 𝐶 ∧ 𝑥 ∈ dom 𝑓))
2		nfv 1912	. . . 4 ⊢ Ⅎ𝑑𝜑
3		bnj1518.3	. . . . . 6 ⊢ 𝐶 = {𝑓 ∣ ∃𝑑 ∈ 𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥 ∈ 𝑑 (𝑓‘𝑥) = (𝐺‘𝑌))}
4		nfre1 3283	. . . . . . 7 ⊢ Ⅎ𝑑∃𝑑 ∈ 𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥 ∈ 𝑑 (𝑓‘𝑥) = (𝐺‘𝑌))
5	4	nfab 2909	. . . . . 6 ⊢ Ⅎ𝑑{𝑓 ∣ ∃𝑑 ∈ 𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥 ∈ 𝑑 (𝑓‘𝑥) = (𝐺‘𝑌))}
6	3, 5	nfcxfr 2901	. . . . 5 ⊢ Ⅎ𝑑𝐶
7	6	nfcri 2895	. . . 4 ⊢ Ⅎ𝑑 𝑓 ∈ 𝐶
8		nfv 1912	. . . 4 ⊢ Ⅎ𝑑 𝑥 ∈ dom 𝑓
9	2, 7, 8	nf3an 1899	. . 3 ⊢ Ⅎ𝑑(𝜑 ∧ 𝑓 ∈ 𝐶 ∧ 𝑥 ∈ dom 𝑓)
10	1, 9	nfxfr 1850	. 2 ⊢ Ⅎ𝑑𝜓
11	10	nf5ri 2193	1 ⊢ (𝜓 → ∀𝑑𝜓)

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086  ∀wal 1535   = wceq 1537   ∈ wcel 2106  {cab 2712  ∀wral 3059  ∃wrex 3068   ⊆ wss 3963  ⟨cop 4637  ∪ cuni 4912  dom cdm 5689   ↾ cres 5691   Fn wfn 6558  ‘cfv 6563   predc-bnj14 34681   FrSe w-bnj15 34685

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1908  ax-6 1965  ax-7 2005  ax-8 2108  ax-9 2116  ax-10 2139  ax-11 2155  ax-12 2175  ax-ext 2706

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1540  df-ex 1777  df-nf 1781  df-sb 2063  df-clab 2713  df-cleq 2727  df-clel 2814  df-nfc 2890  df-rex 3069

This theorem is referenced by:  bnj1501  35060