Theorem pm2.07 688

Description: Theorem *2.07 of [WhiteheadRussell] p. 101. (Contributed by NM, 3-Jan-2005.)

Assertion

Ref	Expression
pm2.07	|- ( ph -> ( ph \/ ph ) )

Proof of Theorem pm2.07

Step	Hyp	Ref	Expression
1		olc 664	1 |- ( ph -> ( ph \/ ph ) )

Syntax hints:   -> wi 4   \/ wo 661

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-io 662

This theorem depends on definitions:  df-bi 115

This theorem is referenced by:  oridm  706