Metamath Proof Explorer


Theorem simpl11

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012) (Proof shortened by Wolf Lammen, 24-Jun-2022)

Ref Expression
Assertion simpl11 φ ψ χ θ τ η φ

Proof

Step Hyp Ref Expression
1 simpl1 φ ψ χ η φ
2 1 3ad2antl1 φ ψ χ θ τ η φ