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Theorem im2anan9r 809
Description: Deduction joining nested implications to form implication of conjunctions. (Contributed by NM, 29-Feb-1996.)
Hypotheses
Ref Expression
im2an9.1
im2an9.2
Assertion
Ref Expression
im2anan9r

Proof of Theorem im2anan9r
StepHypRef Expression
1 im2an9.1 . . 3
2 im2an9.2 . . 3
31, 2im2anan9 808 . 2
43ancoms 439 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wa 358
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 177  df-an 360
This theorem is referenced by: (None)
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