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| Mirrors > Home > MPE Home > Th. List > oien | Structured version Visualization version GIF version | ||
| Description: The order type of a well-ordered set is equinumerous to the set. (Contributed by Mario Carneiro, 23-May-2015.) |
| Ref | Expression |
|---|---|
| oicl.1 | ⊢ 𝐹 = OrdIso(𝑅, 𝐴) |
| Ref | Expression |
|---|---|
| oien | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝑅 We 𝐴) → dom 𝐹 ≈ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oicl.1 | . . 3 ⊢ 𝐹 = OrdIso(𝑅, 𝐴) | |
| 2 | 1 | oiexg 9549 | . 2 ⊢ (𝐴 ∈ 𝑉 → 𝐹 ∈ V) |
| 3 | 1 | oiiso 9551 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝑅 We 𝐴) → 𝐹 Isom E , 𝑅 (dom 𝐹, 𝐴)) |
| 4 | isof1o 7316 | . . 3 ⊢ (𝐹 Isom E , 𝑅 (dom 𝐹, 𝐴) → 𝐹:dom 𝐹–1-1-onto→𝐴) | |
| 5 | 3, 4 | syl 17 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝑅 We 𝐴) → 𝐹:dom 𝐹–1-1-onto→𝐴) |
| 6 | f1oen3g 8981 | . 2 ⊢ ((𝐹 ∈ V ∧ 𝐹:dom 𝐹–1-1-onto→𝐴) → dom 𝐹 ≈ 𝐴) | |
| 7 | 2, 5, 6 | syl2an2r 685 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝑅 We 𝐴) → dom 𝐹 ≈ 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2108 Vcvv 3459 class class class wbr 5119 E cep 5552 We wwe 5605 dom cdm 5654 –1-1-onto→wf1o 6530 Isom wiso 6532 ≈ cen 8956 OrdIsocoi 9523 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pr 5402 ax-un 7729 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7362 df-ov 7408 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-en 8960 df-oi 9524 |
| This theorem is referenced by: hartogslem1 9556 wofib 9559 cantnfcl 9681 cantnff 9688 cantnf0 9689 cantnfp1lem2 9693 cantnflem1 9703 cantnf 9707 cnfcom2lem 9715 finnisoeu 10127 dfac12lem2 10159 pwfseqlem5 10677 fz1isolem 14479 |
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