Theorem eel0321old

Description: el0321old without virtual deductions. (Contributed by Alan Sare, 13-Jun-2015) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Hypotheses	eel0321old.1	|- ph
	eel0321old.2	|- ( ( ps /\ ch /\ th ) -> ta )
	eel0321old.3	|- ( ( ph /\ ta ) -> et )
Assertion	eel0321old	|- ( ( ps /\ ch /\ th ) -> et )

Proof

Step	Hyp	Ref	Expression
1		eel0321old.1	|- ph
2		eel0321old.2	|- ( ( ps /\ ch /\ th ) -> ta )
3		eel0321old.3	|- ( ( ph /\ ta ) -> et )
4	1 2 3	sylancr	|- ( ( ps /\ ch /\ th ) -> et )