Metamath Proof Explorer


Theorem simp313

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

Ref Expression
Assertion simp313 ηζφψχθτχ

Proof

Step Hyp Ref Expression
1 simp13 φψχθτχ
2 1 3ad2ant3 ηζφψχθτχ