Theorem rabeqif 2764

Description: Equality theorem for restricted class abstractions. Inference form of rabeqf 2763. (Contributed by Glauco Siliprandi, 26-Jun-2021.)

Hypotheses

Ref	Expression
rabeqf.1	|- F/_ x A
rabeqf.2	|- F/_ x B
rabeqif.3	|- A = B

Assertion

Ref	Expression
rabeqif	|- { x e. A | ph } = { x e. B | ph }

Proof of Theorem rabeqif

Step	Hyp	Ref	Expression
1		rabeqif.3	. 2 |- A = B
2		rabeqf.1	. . 3 |- F/_ x A
3		rabeqf.2	. . 3 |- F/_ x B
4	2, 3	rabeqf 2763	. 2 |- ( A = B -> { x e. A | ph } = { x e. B | ph } )
5	1, 4	ax-mp 5	1 |- { x e. A | ph } = { x e. B | ph }

Syntax hints:   = wceq 1373   F/_wnfc 2336   {crab 2489

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2188

This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-rab 2494

This theorem is referenced by:  rabeqi  2766