Theorem bisaiaisb

Description: Application of bicom1 with a, b swapped. (Contributed by Jarvin Udandy, 31-Aug-2016)

	Ref	Expression
Assertion	bisaiaisb	$$⊢\left(\psi \leftrightarrow \phi \right)\to \left(\phi \leftrightarrow \psi \right)$$

Proof

Step	Hyp	Ref	Expression
1		bicom1	$$⊢\left(\psi \leftrightarrow \phi \right)\to \left(\phi \leftrightarrow \psi \right)$$