Theorem simpl3

Simplification of conjunction. (Contributed by Jeff Hankins, 17-Nov-2009.) (Proof shortened by Wolf Lammen, 23-Jun-2022.)

Conclusion

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

Proof

simpl

3ad2antl3 _