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| Mirrors > Home > MPE Home > Th. List > numthcor | Structured version Visualization version GIF version | ||
| Description: Any set is strictly dominated by some ordinal. (Contributed by NM, 22-Oct-2003.) |
| Ref | Expression |
|---|---|
| numthcor | ⊢ (𝐴 ∈ 𝑉 → ∃𝑥 ∈ On 𝐴 ≺ 𝑥) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq1 5097 | . . 3 ⊢ (𝑦 = 𝐴 → (𝑦 ≺ 𝑥 ↔ 𝐴 ≺ 𝑥)) | |
| 2 | 1 | rexbidv 3180 | . 2 ⊢ (𝑦 = 𝐴 → (∃𝑥 ∈ On 𝑦 ≺ 𝑥 ↔ ∃𝑥 ∈ On 𝐴 ≺ 𝑥)) |
| 3 | vpwex 5328 | . . . 4 ⊢ 𝒫 𝑦 ∈ V | |
| 4 | 3 | numth2 10418 | . . 3 ⊢ ∃𝑥 ∈ On 𝑥 ≈ 𝒫 𝑦 |
| 5 | vex 3452 | . . . . . 6 ⊢ 𝑦 ∈ V | |
| 6 | 5 | canth2 9091 | . . . . 5 ⊢ 𝑦 ≺ 𝒫 𝑦 |
| 7 | ensym 8973 | . . . . 5 ⊢ (𝑥 ≈ 𝒫 𝑦 → 𝒫 𝑦 ≈ 𝑥) | |
| 8 | sdomentr 9072 | . . . . 5 ⊢ ((𝑦 ≺ 𝒫 𝑦 ∧ 𝒫 𝑦 ≈ 𝑥) → 𝑦 ≺ 𝑥) | |
| 9 | 6, 7, 8 | sylancr 595 | . . . 4 ⊢ (𝑥 ≈ 𝒫 𝑦 → 𝑦 ≺ 𝑥) |
| 10 | 9 | reximi 3094 | . . 3 ⊢ (∃𝑥 ∈ On 𝑥 ≈ 𝒫 𝑦 → ∃𝑥 ∈ On 𝑦 ≺ 𝑥) |
| 11 | 4, 10 | ax-mp 5 | . 2 ⊢ ∃𝑥 ∈ On 𝑦 ≺ 𝑥 |
| 12 | 2, 11 | vtoclg 3516 | 1 ⊢ (𝐴 ∈ 𝑉 → ∃𝑥 ∈ On 𝐴 ≺ 𝑥) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1554 ∈ wcel 2136 ∃wrex 3080 𝒫 cpw 4549 class class class wbr 5094 Oncon0 6335 ≈ cen 8913 ≺ csdm 8915 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1809 ax-4 1823 ax-5 1924 ax-6 1981 ax-7 2022 ax-8 2138 ax-9 2146 ax-10 2169 ax-11 2185 ax-12 2206 ax-ext 2728 ax-rep 5221 ax-sep 5240 ax-nul 5250 ax-pow 5316 ax-pr 5384 ax-un 7707 ax-ac2 10410 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1557 df-fal 1567 df-ex 1794 df-nf 1798 df-sb 2085 df-mo 2560 df-eu 2590 df-clab 2735 df-cleq 2748 df-clel 2831 df-nfc 2905 df-ne 2952 df-ral 3071 df-rex 3081 df-rmo 3361 df-reu 3362 df-rab 3409 df-v 3450 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4281 df-if 4475 df-pw 4551 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-int 4900 df-iun 4945 df-br 5095 df-opab 5157 df-mpt 5176 df-tr 5202 df-id 5535 df-eprel 5540 df-po 5548 df-so 5549 df-fr 5593 df-se 5594 df-we 5595 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-pred 6277 df-ord 6338 df-on 6339 df-suc 6341 df-iota 6466 df-fun 6512 df-fn 6513 df-f 6514 df-f1 6515 df-fo 6516 df-f1o 6517 df-fv 6518 df-isom 6519 df-riota 7342 df-ov 7388 df-2nd 7960 df-frecs 8250 df-wrecs 8281 df-recs 8330 df-er 8666 df-en 8917 df-dom 8918 df-sdom 8919 df-card 9887 df-ac 10062 |
| This theorem is referenced by: cardmin 10511 |
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