Theorem bj-vtoclg1f 35030

Description: Reprove vtoclg1f 3494 from bj-vtoclg1f1 35029. This removes dependency on ax-ext 2709, df-cleq 2730 and df-v 3424. Use bj-vtoclg1fv 35031 instead when sufficient (in particular when 𝑉 is substituted for V). (Contributed by BJ, 14-Sep-2019.) (Proof modification is discouraged.)

Hypotheses

Ref	Expression
bj-vtoclg1f.nf	⊢ Ⅎ𝑥𝜓
bj-vtoclg1f.maj	⊢ (𝑥 = 𝐴 → (𝜑 → 𝜓))
bj-vtoclg1f.min	⊢ 𝜑

Assertion

Ref	Expression
bj-vtoclg1f	⊢ (𝐴 ∈ 𝑉 → 𝜓)

Distinct variable group:   𝑥,𝐴

Allowed substitution hints:   𝜑(𝑥)   𝜓(𝑥)   𝑉(𝑥)

Proof of Theorem bj-vtoclg1f

Step	Hyp	Ref	Expression
1		elisset 2820	. 2 ⊢ (𝐴 ∈ 𝑉 → ∃𝑥 𝑥 = 𝐴)
2		bj-vtoclg1f.nf	. . 3 ⊢ Ⅎ𝑥𝜓
3		bj-vtoclg1f.maj	. . 3 ⊢ (𝑥 = 𝐴 → (𝜑 → 𝜓))
4		bj-vtoclg1f.min	. . 3 ⊢ 𝜑
5	2, 3, 4	bj-exlimmpi 35024	. 2 ⊢ (∃𝑥 𝑥 = 𝐴 → 𝜓)
6	1, 5	syl 17	1 ⊢ (𝐴 ∈ 𝑉 → 𝜓)

Syntax hints:   → wi 4   = wceq 1539  ∃wex 1783  Ⅎwnf 1787   ∈ wcel 2108

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-12 2173

This theorem depends on definitions:  df-bi 206  df-an 396  df-tru 1542  df-ex 1784  df-nf 1788  df-sb 2069  df-clab 2716  df-clel 2817

This theorem is referenced by: (None)