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Metamath Proof Explorer


Theorem simp11l

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

Ref Expression
Assertion simp11l φ ψ χ θ τ η φ

Proof

Step Hyp Ref Expression
1 simp1l φ ψ χ θ φ
2 1 3ad2ant1 φ ψ χ θ τ η φ