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Theorem pm3.2im 145
Description: Theorem *3.2 of [WhiteheadRussell] p. 111, expressed with primitive connectives. (Contributed by NM, 29-Dec-1992.) (Proof shortened by Josh Purinton, 29-Dec-2000.)
Assertion
Ref Expression
pm3.2im

Proof of Theorem pm3.2im
StepHypRef Expression
1 pm2.27 39 . 2
21con2d 115 1
Colors of variables: wff setvar class
Syntax hints:  -.wn 3  ->wi 4
This theorem is referenced by:  jc  147  expi  149  expt  156
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
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