Theorem anabss7p1

Description: A deduction unionizing a non-unionized collection of virtual hypotheses. This would have been named uun221 if the 0th permutation did not exist in set.mm as anabss7 . (Contributed by Alan Sare, 4-Feb-2017) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Hypothesis	anabss7p1.1	$$⊢\left(\left(\psi \wedge \phi \right)\wedge \phi \right)\to \chi$$
Assertion	anabss7p1	$$⊢\left(\psi \wedge \phi \right)\to \chi$$

Proof

Step	Hyp	Ref	Expression
1		anabss7p1.1	$$⊢\left(\left(\psi \wedge \phi \right)\wedge \phi \right)\to \chi$$
2	1	anabss3	$$⊢\left(\psi \wedge \phi \right)\to \chi$$