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Mirrors > Home > ILE Home > Th. List > stoic2b | Unicode version |
Description: Stoic logic Thema 2
version b. See stoic2a 1358.
Version b is with the phrase "or both". We already have this rule as mpd3an3 1269, so here we prove the equivalence and discourage its use. (New usage is discouraged.) (Contributed by David A. Wheeler, 17-Feb-2019.) |
Ref | Expression |
---|---|
stoic2b.1 | |
stoic2b.2 |
Ref | Expression |
---|---|
stoic2b |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | stoic2b.1 | . 2 | |
2 | stoic2b.2 | . 2 | |
3 | 1, 2 | mpd3an3 1269 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 w3a 919 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 |
This theorem depends on definitions: df-bi 115 df-3an 921 |
This theorem is referenced by: (None) |
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