Theorem orci 650

Description: Deduction introducing a disjunct. (Contributed by NM, 19-Jan-2008.) (Revised by Mario Carneiro, 31-Jan-2015.)

Hypothesis

Ref	Expression
orci.1	⊢ 𝜑

Assertion

Ref	Expression
orci	⊢ (𝜑 ∨ 𝜓)

Proof of Theorem orci

Step	Hyp	Ref	Expression
1		orci.1	. 2 ⊢ 𝜑
2		orc 633	. 2 ⊢ (𝜑 → (𝜑 ∨ 𝜓))
3	1, 2	ax-mp 7	1 ⊢ (𝜑 ∨ 𝜓)

Syntax hints:   ∨ wo 629

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-io 630

This theorem depends on definitions:  df-bi 110

This theorem is referenced by:  truorfal  1297  prid1g  3474  onsucelsucexmidlem1  4253  regexmidlemm  4257  nn0suc  4327  nndceq0  4339  0elnn  4340  acexmidlem2  5509  indpi  6440  nn1gt1  7947  nneoor  8340  mnfltpnf  8706