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Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-dctru | GIF version |
Description: The true truth value is decidable. (Contributed by BJ, 5-Aug-2024.) |
Ref | Expression |
---|---|
bj-dctru | ⊢ DECID ⊤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bj-trdc 13366 | . 2 ⊢ (⊤ → DECID ⊤) | |
2 | 1 | mptru 1344 | 1 ⊢ DECID ⊤ |
Colors of variables: wff set class |
Syntax hints: DECID wdc 820 ⊤wtru 1336 |
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-io 699 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-tru 1338 |
This theorem is referenced by: (None) |
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