This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.

Metamath Proof Explorer


Theorem simp3r

Description: Simplification of triple conjunction. (Contributed by NM, 9-Nov-2011)

Ref Expression
Assertion simp3r φ ψ χ θ θ

Proof

Step Hyp Ref Expression
1 simpr χ θ θ
2 1 3ad2ant3 φ ψ χ θ θ