Theorem simp3rl

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

	Ref	Expression
Assertion	simp3rl	$$⊢\left(\theta \wedge \tau \wedge \left(\chi \wedge \left(\phi \wedge \psi \right)\right)\right)\to \phi$$

Proof

Step	Hyp	Ref	Expression
1		simprl	$$⊢\left(\chi \wedge \left(\phi \wedge \psi \right)\right)\to \phi$$
2	1	3ad2ant3	$$⊢\left(\theta \wedge \tau \wedge \left(\chi \wedge \left(\phi \wedge \psi \right)\right)\right)\to \phi$$