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Theorem jca31 520
Description: Join three consequents. (Contributed by Jeff Hankins, 1-Aug-2009.)
Hypotheses
Ref Expression
jca31.1
jca31.2
jca31.3
Assertion
Ref Expression
jca31

Proof of Theorem jca31
StepHypRef Expression
1 jca31.1 . . 3
2 jca31.2 . . 3
31, 2jca 518 . 2
4 jca31.3 . 2
53, 4jca 518 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wa 358
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 177  df-an 360
This theorem is referenced by:  3jca  1132  syl21anc  1181  f1oiso2  5501
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