Metamath Proof Explorer


Theorem simp3r2

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

Ref Expression
Assertion simp3r2 τηθφψχψ

Proof

Step Hyp Ref Expression
1 simpr2 θφψχψ
2 1 3ad2ant3 τηθφψχψ