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Theorem stoic4b 1611
Description: Stoic logic Thema 4 version b.

This is version b, which is with the phrase "or both". See stoic4a 1610 for more information. (Contributed by David A. Wheeler, 17-Feb-2019.)

Hypotheses
Ref Expression
stoic4b.1
stoic4b.2
Assertion
Ref Expression
stoic4b

Proof of Theorem stoic4b
StepHypRef Expression
1 stoic4b.1 . . 3
213adant3 1016 . 2
3 simp1 996 . 2
4 simp2 997 . 2
5 simp3 998 . 2
6 stoic4b.2 . 2
72, 3, 4, 5, 6syl31anc 1231 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  /\wa 369  /\w3a 973
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 185  df-an 371  df-3an 975
  Copyright terms: Public domain W3C validator