Theorem pm2.07 276

Description: Theorem *2.07 of [WhiteheadRussell] p. 101.

Assertion

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

Proof of Theorem pm2.07

Step	Hyp	Ref	Expression
1		olc 268	1 |- (ph -> (ph \/ ph))

Syntax hints:   -> wi 3   \/ wo 222

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7

This theorem depends on definitions:  df-bi 147  df-or 224

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