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Mirrors > Home > ILE Home > Th. List > pm2.521dc | Unicode version |
Description: Theorem *2.521 of [WhiteheadRussell] p. 107, but with an additional decidability condition. Note that by replacing in proof pm2.52 646 with conax1k 644, we obtain a proof of the more general instance where the last occurrence of is replaced with any . (Contributed by Jim Kingdon, 5-May-2018.) |
Ref | Expression |
---|---|
pm2.521dc | DECID |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.521gdc 854 | 1 DECID |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 DECID wdc 820 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 |
This theorem depends on definitions: df-bi 116 df-stab 817 df-dc 821 |
This theorem is referenced by: (None) |
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