Metamath Proof Explorer


Theorem simpr33

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012) (Proof shortened by Wolf Lammen, 24-Jun-2022)

Ref Expression
Assertion simpr33 η θ τ φ ψ χ χ

Proof

Step Hyp Ref Expression
1 simpr3 η φ ψ χ χ
2 1 3ad2antr3 η θ τ φ ψ χ χ