Metamath Proof Explorer


Theorem idiVD

Description: Virtual deduction proof of idiALT . The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.

h1:: |- ph
qed:1,?: e0a |- ph
(Contributed by Alan Sare, 31-Dec-2011) (Proof modification is discouraged.) (New usage is discouraged.)

Ref Expression
Hypothesis idiVD.1
|- ph
Assertion idiVD
|- ph

Proof

Step Hyp Ref Expression
1 idiVD.1
 |-  ph
2 id
 |-  ( ph -> ph )
3 1 2 e0a
 |-  ph