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| Mirrors > Home > MPE Home > Th. List > Mathboxes > onsupuni2 | Structured version Visualization version GIF version | ||
| Description: The supremum of a set of ordinals is the union of that set. (Contributed by RP, 22-Jan-2025.) |
| Ref | Expression |
|---|---|
| onsupuni2 | ⊢ (𝐴 ∈ 𝒫 On → sup(𝐴, On, E ) = ∪ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpwb 4588 | . 2 ⊢ (𝐴 ∈ 𝒫 On ↔ (𝐴 ∈ V ∧ 𝐴 ⊆ On)) | |
| 2 | onsupuni 43204 | . . 3 ⊢ ((𝐴 ⊆ On ∧ 𝐴 ∈ V) → sup(𝐴, On, E ) = ∪ 𝐴) | |
| 3 | 2 | ancoms 458 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐴 ⊆ On) → sup(𝐴, On, E ) = ∪ 𝐴) |
| 4 | 1, 3 | sylbi 217 | 1 ⊢ (𝐴 ∈ 𝒫 On → sup(𝐴, On, E ) = ∪ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2107 Vcvv 3463 ⊆ wss 3931 𝒫 cpw 4580 ∪ cuni 4887 E cep 5563 Oncon0 6363 supcsup 9462 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5276 ax-nul 5286 ax-pr 5412 ax-un 7737 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3420 df-v 3465 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4888 df-br 5124 df-opab 5186 df-tr 5240 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-ord 6366 df-on 6367 df-iota 6494 df-riota 7370 df-sup 9464 |
| This theorem is referenced by: (None) |
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