Theorem pm2.46 398

Description: Theorem *2.46 of [WhiteheadRussell] p. 106. (Contributed by NM, 3-Jan-2005.)

Assertion

Ref	Expression
pm2.46

Proof of Theorem pm2.46

Step	Hyp	Ref	Expression
1		olc 384	. 2
2	1	con3i 135	1

Syntax hints:  -.wn 3  ->wi 4  \/wo 368

This theorem is referenced by:  pm2.48  400  pm2.49  401  rb-ax3  1587  eueq3  3274  ltnsym  9704  tglineneq  24024

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-or 370