Theorem exp53 617

Description: An exportation inference. (Contributed by Jeff Hankins, 30-Aug-2009.)

Hypothesis

Ref	Expression
exp53.1

Assertion

Ref	Expression
exp53

Proof of Theorem exp53

Step	Hyp	Ref	Expression
1		exp53.1	. . 3
2	1	ex 434	. 2
3	2	exp43 612	1

Syntax hints:  ->wi 4  /\wa 369

This theorem is referenced by:  omordi  7234  xpdom2  7632  elfzodifsumelfzo  11882  grplcan  16102  grpolcan  25235

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 185  df-an 371