Theorem bdceq 14597

Description: Equality property for the predicate BOUNDED. (Contributed by BJ, 3-Oct-2019.)

Hypothesis

Ref	Expression
bdceq.1	|- A = B

Assertion

Ref	Expression
bdceq	|- (BOUNDED A <-> BOUNDED B )

Proof of Theorem bdceq

Dummy variable x is distinct from all other variables.

Step	Hyp	Ref	Expression
1		bdceq.1	. . . . 5 |- A = B
2	1	eleq2i 2244	. . . 4 |- ( x e. A <-> x e. B )
3	2	bdeq 14578	. . 3 |- (BOUNDED x e. A <-> BOUNDED x e. B )
4	3	albii 1470	. 2 |- ( A. xBOUNDED x e. A <-> A. xBOUNDED x e. B )
5		df-bdc 14596	. 2 |- (BOUNDED A <-> A. xBOUNDED x e. A )
6		df-bdc 14596	. 2 |- (BOUNDED B <-> A. xBOUNDED x e. B )
7	4, 5, 6	3bitr4i 212	1 |- (BOUNDED A <-> BOUNDED B )

Syntax hints:   <-> wb 105   A.wal 1351   = wceq 1353   e. wcel 2148  BOUNDED wbd 14567  BOUNDED wbdc 14595

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-5 1447  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-4 1510  ax-17 1526  ax-ial 1534  ax-ext 2159  ax-bd0 14568

This theorem depends on definitions:  df-bi 117  df-cleq 2170  df-clel 2173  df-bdc 14596

This theorem is referenced by:  bdceqi  14598