Theorem ex-natded5.3i

Description: The same as ex-natded5.3 and ex-natded5.3-2 but with no context. Identical to jccir , which should be used instead. (Contributed by Mario Carneiro, 9-Feb-2017) (Proof modification is discouraged.) (New usage is discouraged.)

	Ref	Expression
Hypotheses	ex-natded5.3i.1	$$⊢\psi \to \chi$$
	ex-natded5.3i.2	$$⊢\chi \to \theta$$
Assertion	ex-natded5.3i	$$⊢\psi \to \left(\chi \wedge \theta \right)$$

Proof

Step	Hyp	Ref	Expression
1		ex-natded5.3i.1	$$⊢\psi \to \chi$$
2		ex-natded5.3i.2	$$⊢\chi \to \theta$$
3	1 2	syl	$$⊢\psi \to \theta$$
4	1 3	jca	$$⊢\psi \to \left(\chi \wedge \theta \right)$$