Metamath Proof Explorer


Theorem anim1ci

Description: Introduce conjunct to both sides of an implication. (Contributed by Peter Mazsa, 24-Sep-2022)

Ref Expression
Hypothesis anim1i.1 ( 𝜑𝜓 )
Assertion anim1ci ( ( 𝜑𝜒 ) → ( 𝜒𝜓 ) )

Proof

Step Hyp Ref Expression
1 anim1i.1 ( 𝜑𝜓 )
2 id ( 𝜒𝜒 )
3 1 2 anim12ci ( ( 𝜑𝜒 ) → ( 𝜒𝜓 ) )