Metamath Proof Explorer


Theorem simp1l3

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012)

Ref Expression
Assertion simp1l3 φ ψ χ θ τ η χ

Proof

Step Hyp Ref Expression
1 simpl3 φ ψ χ θ χ
2 1 3ad2ant1 φ ψ χ θ τ η χ