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Theorem imim12i 53
Description: Inference joining two implications. (Contributed by NM, 5-Aug-1993.) (Proof shortened by O'Cat, 29-Oct-2011.)
Hypotheses
Ref Expression
imim12i.1
imim12i.2
Assertion
Ref Expression
imim12i

Proof of Theorem imim12i
StepHypRef Expression
1 imim12i.1 . 2
2 imim12i.2 . . 3
32imim2i 13 . 2
41, 3syl5 28 1
Colors of variables: wff setvar class
Syntax hints:   wi 4
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7
This theorem is referenced by:  imim1i  54  dedlem0b  919  meredith  1404  19.38OLD  1874  exmoeu  2246
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