Theorem rabeqd 39276

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

Hypothesis

Ref	Expression
rabeqd.1	|- ( ph -> A = B )

Assertion

Ref	Expression
rabeqd	|- ( ph -> { x e. A | ch } = { x e. B | ch } )

Distinct variable groups:   x, A   x, B

Allowed substitution hints:   ph( x)   ch( x)

Proof of Theorem rabeqd

Step	Hyp	Ref	Expression
1		rabeqd.1	. 2 |- ( ph -> A = B )
2		rabeq 3192	. 2 |- ( A = B -> { x e. A | ch } = { x e. B | ch } )
3	1, 2	syl 17	1 |- ( ph -> { x e. A | ch } = { x e. B | ch } )

Syntax hints:   -> wi 4   = wceq 1483   {crab 2916

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-rab 2921

This theorem is referenced by:  issmflem  40936  issmfd  40944  cnfsmf  40949  issmflelem  40953  issmfgtlem  40964  issmfgt  40965  issmfled  40966  issmfgtd  40969  issmfgelem  40977