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Theorem nsyld 140
Description: A negated syllogism deduction. (Contributed by NM, 9-Apr-2005.)
Hypotheses
Ref Expression
nsyld.1
nsyld.2
Assertion
Ref Expression
nsyld

Proof of Theorem nsyld
StepHypRef Expression
1 nsyld.1 . 2
2 nsyld.2 . . 3
32con3d 133 . 2
41, 3syld 44 1
Colors of variables: wff setvar class
Syntax hints:  -.wn 3  ->wi 4
This theorem is referenced by:  pm2.65d  175  pltn2lp  15599  alexsubALTlem4  20550  ifeqeqx  27419  radcnvrat  31195  cvrat  35146
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
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