Metamath Proof Explorer


Theorem simpll3

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012) (Proof shortened by Wolf Lammen, 23-Jun-2022)

Ref Expression
Assertion simpll3 φ ψ χ θ τ χ

Proof

Step Hyp Ref Expression
1 simp3 φ ψ χ χ
2 1 ad2antrr φ ψ χ θ τ χ