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| Mirrors > Home > MPE Home > Th. List > Mathboxes > wevonprcf1o | Structured version Visualization version GIF version | ||
| Description: If 𝑅 is a set-like well-ordering of the universe and 𝐴 is a proper class, then 𝐹 is a bijection from the ordinals to 𝐴. This is the ZFC version of (4 → 5) in https://tinyurl.com/hamkins-gblac. (Contributed by BTernaryTau, 9-Jun-2026.) |
| Ref | Expression |
|---|---|
| wevonprcf1o.1 | ⊢ 𝐹 = OrdIso(𝑅, 𝐴) |
| Ref | Expression |
|---|---|
| wevonprcf1o | ⊢ ((𝑅 We V ∧ 𝑅 Se V ∧ ¬ 𝐴 ∈ V) → 𝐹:On–1-1-onto→𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssv 3958 | . . . 4 ⊢ 𝐴 ⊆ V | |
| 2 | wess 5645 | . . . 4 ⊢ (𝐴 ⊆ V → (𝑅 We V → 𝑅 We 𝐴)) | |
| 3 | 1, 2 | ax-mp 5 | . . 3 ⊢ (𝑅 We V → 𝑅 We 𝐴) |
| 4 | sess2 5625 | . . . 4 ⊢ (𝐴 ⊆ V → (𝑅 Se V → 𝑅 Se 𝐴)) | |
| 5 | 1, 4 | ax-mp 5 | . . 3 ⊢ (𝑅 Se V → 𝑅 Se 𝐴) |
| 6 | id 23 | . . 3 ⊢ (¬ 𝐴 ∈ V → ¬ 𝐴 ∈ V) | |
| 7 | 3, 5, 6 | 3anim123i 1169 | . 2 ⊢ ((𝑅 We V ∧ 𝑅 Se V ∧ ¬ 𝐴 ∈ V) → (𝑅 We 𝐴 ∧ 𝑅 Se 𝐴 ∧ ¬ 𝐴 ∈ V)) |
| 8 | wevonprcf1o.1 | . . 3 ⊢ 𝐹 = OrdIso(𝑅, 𝐴) | |
| 9 | 8 | ordtypeon 35603 | . 2 ⊢ ((𝑅 We 𝐴 ∧ 𝑅 Se 𝐴 ∧ ¬ 𝐴 ∈ V) → 𝐹 Isom E , 𝑅 (On, 𝐴)) |
| 10 | isof1o 7328 | . 2 ⊢ (𝐹 Isom E , 𝑅 (On, 𝐴) → 𝐹:On–1-1-onto→𝐴) | |
| 11 | 7, 9, 10 | 3syl 19 | 1 ⊢ ((𝑅 We V ∧ 𝑅 Se V ∧ ¬ 𝐴 ∈ V) → 𝐹:On–1-1-onto→𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 Vcvv 3453 ⊆ wss 3902 E cep 5558 Se wse 5610 We wwe 5611 Oncon0 6361 –1-1-onto→wf1o 6536 Isom wiso 6538 OrdIsocoi 9485 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pr 5402 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-isom 6546 df-riota 7374 df-ov 7420 df-2nd 7991 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-oi 9486 |
| This theorem is used by: (None) |
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