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Theorem syl9r 67
Description: A nested syllogism inference with different antecedents. (Contributed by NM, 5-Aug-1993.)
Hypotheses
Ref Expression
syl9r.1
syl9r.2
Assertion
Ref Expression
syl9r

Proof of Theorem syl9r
StepHypRef Expression
1 syl9r.1 . . 3
2 syl9r.2 . . 3
31, 2syl9 66 . 2
43com12 27 1
Colors of variables: wff set class
Syntax hints:   wi 4
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7
This theorem is referenced by:  sylan9r  390  pm2.85dc  810  looinvdc  820  pclem6  1264  nfimd  1474  19.23t  1564  fununi  4910  dfimafn  5165  funimass3  5226  nnsub  7733
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