Theorem ad3antlr

Deduction adding three conjuncts to antecedent. (Contributed by Mario Carneiro, 5-Jan-2017.) (Proof shortened by Wolf Lammen, 5-Apr-2022.)

Hypothesis
ad2ant.1
\( \vdash \varphi \rightarrow \psi \)
Conclusion
\( \vdash \chi \wedge \varphi \wedge \theta \wedge \tau \rightarrow \psi \)
Proof
ad2ant.1
adantl _
ad2antrr _