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Metamath Proof Explorer

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	$⊢ φ$
	Assertion	idiALT	$⊢ φ$

Proof

Step	Hyp	Ref	Expression
1		idiALT.1	$⊢ φ$