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Mirrors > Home > ILE Home > Th. List > Mathboxes > bdcsn | GIF version |
Description: The singleton of a setvar is bounded. (Contributed by BJ, 16-Oct-2019.) |
Ref | Expression |
---|---|
bdcsn | ⊢ BOUNDED {𝑥} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-bdeq 10611 | . . 3 ⊢ BOUNDED 𝑦 = 𝑥 | |
2 | 1 | bdcab 10640 | . 2 ⊢ BOUNDED {𝑦 ∣ 𝑦 = 𝑥} |
3 | df-sn 3404 | . 2 ⊢ {𝑥} = {𝑦 ∣ 𝑦 = 𝑥} | |
4 | 2, 3 | bdceqir 10635 | 1 ⊢ BOUNDED {𝑥} |
Colors of variables: wff set class |
Syntax hints: {cab 2067 {csn 3398 BOUNDED wbdc 10631 |
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-5 1376 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-17 1459 ax-ial 1467 ax-ext 2063 ax-bd0 10604 ax-bdeq 10611 ax-bdsb 10613 |
This theorem depends on definitions: df-bi 115 df-clab 2068 df-cleq 2074 df-clel 2077 df-sn 3404 df-bdc 10632 |
This theorem is referenced by: bdcpr 10662 bdctp 10663 bdvsn 10665 bdcsuc 10671 |
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