Theorem simpl32

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

Conclusion

\( \vdash (\theta \wedge \tau \wedge (\varphi \wedge \psi \wedge \chi)) \wedge \eta \rightarrow \psi \)

Proof

simpl2

3ad2antl3 _