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Mirrors > Home > ILE Home > Th. List > pm5.13dc | Unicode version |
Description: An implication holds in at least one direction, where one proposition is decidable. Based on theorem *5.13 of [WhiteheadRussell] p. 123. (Contributed by Jim Kingdon, 30-Mar-2018.) |
Ref | Expression |
---|---|
pm5.13dc | DECID |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm5.14dc 855 | 1 DECID |
Colors of variables: wff set class |
Syntax hints: wi 4 wo 664 DECID wdc 780 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in2 580 ax-io 665 |
This theorem depends on definitions: df-bi 115 df-dc 781 |
This theorem is referenced by: (None) |
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