Theorem idiALT

Description: Placeholder for idi . Though unnecessary, this theorem is sometimes used in proofs in this mathbox for pedagogical purposes. (Contributed by Alan Sare, 31-Dec-2011) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Hypothesis	idiALT.1	$$⊢\phi$$
Assertion	idiALT	$$⊢\phi$$

Proof

Step	Hyp	Ref	Expression
1		idiALT.1	$$⊢\phi$$