Theorem pm3.14 502

Description: Theorem *3.14 of [WhiteheadRussell] p. 111. (Contributed by NM, 3-Jan-2005.)

Assertion

Ref	Expression
pm3.14

Proof of Theorem pm3.14

Step	Hyp	Ref	Expression
1		pm3.1 498	. 2
2	1	con2i 120	1

Syntax hints:  -.wn 3  ->wi 4  \/wo 368  /\wa 369

This theorem is referenced by:  naim1  29850  naim2  29851  tsan2  30549  tsan3  30550

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  df-an 371