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Axiom ax-ia1 99
Description: Left 'and' elimination. Axiom 1 of 10 for intuitionistic logic. Use its alias simpl 102 instead for naming consistency with set.mm. (New usage is discouraged.) (Contributed by Mario Carneiro, 31-Jan-2015.)
Assertion
Ref Expression
ax-ia1

Detailed syntax breakdown of Axiom ax-ia1
StepHypRef Expression
1 wph . . 3
2 wps . . 3
31, 2wa 97 . 2
43, 1wi 4 1
Colors of variables: wff set class
This axiom is referenced by:  simpl  102
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