Theorem simpr

Description: Elimination of a conjunct. Theorem *3.27 (Simp) of WhiteheadRussell p. 112. (Contributed by NM, 3-Jan-1993) (Proof shortened by Wolf Lammen, 14-Jun-2022)

	Ref	Expression
Assertion	simpr	|- ( ( ph /\ ps ) -> ps )

Proof

Step	Hyp	Ref	Expression
1		id	|- ( ps -> ps )
2	1	adantl	|- ( ( ph /\ ps ) -> ps )