Theorem imim2 53

Description: A closed form of syllogism (see syl 16). Theorem *2.05 of [WhiteheadRussell] p. 100. (Contributed by NM, 29-Dec-1992.) (Proof shortened by Wolf Lammen, 6-Sep-2012.)

Assertion

Ref	Expression
imim2

Proof of Theorem imim2

Step	Hyp	Ref	Expression
1		id 22	. 2
2	1	imim2d 52	1

Syntax hints:  ->wi 4

This theorem is referenced by:  syldd  66  imim12  97  pm3.34  586  19.41rgVD  33702

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7