Theorem id1 30849

Description: Alias for idALT 24 that may be referenced in some older works, and kept here to prevent broken links.

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(Contributed by NM, 30-Sep-1992.) (Proof modification is discouraged.) (New usage is discouraged.)

Assertion

Ref	Expression
id1	⊢ (𝜑 → 𝜑)

Proof of Theorem id1

Step	Hyp	Ref	Expression
1		idALT 24	1 ⊢ (𝜑 → 𝜑)

This proof depends on syntax axioms:   → wi 4

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7

This theorem is used by: (None)