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Theorem jcab 535
Description: Distributive law for implication over conjunction. Compare Theorem *4.76 of [WhiteheadRussell] p. 121. (Contributed by NM, 3-Apr-1994.) (Proof shortened by Wolf Lammen, 27-Nov-2013.)
Assertion
Ref Expression
jcab

Proof of Theorem jcab
StepHypRef Expression
1 simpl 102 . . . 4
21imim2i 12 . . 3
3 simpr 103 . . . 4
43imim2i 12 . . 3
52, 4jca 290 . 2
6 pm3.43 534 . 2
75, 6impbii 117 1
Colors of variables: wff set class
Syntax hints:   wi 4   wa 97   wb 98
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101
This theorem depends on definitions:  df-bi 110
This theorem is referenced by:  pm4.76  536  pm5.44  833  2eu4  1990  ssconb  3070  ssin  3153  raaan  3321  tfri3  5894
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