Theorem pm2.07 727

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

Assertion

Ref	Expression
pm2.07	⊢ (𝜑 → (𝜑 ∨ 𝜑))

Proof of Theorem pm2.07

Step	Hyp	Ref	Expression
1		olc 701	1 ⊢ (𝜑 → (𝜑 ∨ 𝜑))

Syntax hints:   → wi 4   ∨ wo 698

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-io 699

This theorem depends on definitions:  df-bi 116

This theorem is referenced by:  oridm  747