Theorem wl-impchain-com-2.3

Description: This theorem is in fact a copy of com23 . It starts a series of theorems named after wl-impchain-com-n.m . For more information see there. (Contributed by Wolf Lammen, 12-Nov-2019) (New usage is discouraged.) (Proof modification is discouraged.)

	Ref	Expression
Hypothesis	wl-impchain-com-2.3.h1	$$⊢\theta \to \left(\chi \to \left(\psi \to \phi \right)\right)$$
Assertion	wl-impchain-com-2.3	$$⊢\theta \to \left(\psi \to \left(\chi \to \phi \right)\right)$$

Proof

Step	Hyp	Ref	Expression
1		wl-impchain-com-2.3.h1	$$⊢\theta \to \left(\chi \to \left(\psi \to \phi \right)\right)$$
2	1	wl-impchain-com-1.2	$$⊢\chi \to \left(\theta \to \left(\psi \to \phi \right)\right)$$
3	2	wl-impchain-com-1.3	$$⊢\psi \to \left(\theta \to \left(\chi \to \phi \right)\right)$$
4	3	wl-impchain-com-1.2	$$⊢\theta \to \left(\psi \to \left(\chi \to \phi \right)\right)$$