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Mirrors > Home > MPE Home > Th. List > nodmon | Structured version Visualization version GIF version |
Description: The domain of a surreal is an ordinal. (Contributed by Scott Fenton, 16-Jun-2011.) |
Ref | Expression |
---|---|
nodmon | ⊢ (𝐴 ∈ No → dom 𝐴 ∈ On) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elno 27566 | . 2 ⊢ (𝐴 ∈ No ↔ ∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o}) | |
2 | fdm 6725 | . . . . 5 ⊢ (𝐴:𝑥⟶{1o, 2o} → dom 𝐴 = 𝑥) | |
3 | 2 | eleq1d 2813 | . . . 4 ⊢ (𝐴:𝑥⟶{1o, 2o} → (dom 𝐴 ∈ On ↔ 𝑥 ∈ On)) |
4 | 3 | biimprcd 249 | . . 3 ⊢ (𝑥 ∈ On → (𝐴:𝑥⟶{1o, 2o} → dom 𝐴 ∈ On)) |
5 | 4 | rexlimiv 3143 | . 2 ⊢ (∃𝑥 ∈ On 𝐴:𝑥⟶{1o, 2o} → dom 𝐴 ∈ On) |
6 | 1, 5 | sylbi 216 | 1 ⊢ (𝐴 ∈ No → dom 𝐴 ∈ On) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2099 ∃wrex 3065 {cpr 4626 dom cdm 5672 Oncon0 6363 ⟶wf 6538 1oc1o 8473 2oc2o 8474 No csur 27560 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2164 ax-ext 2698 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pr 5423 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2936 df-ral 3057 df-rex 3066 df-reu 3372 df-rab 3428 df-v 3471 df-sbc 3775 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-nul 4319 df-if 4525 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4904 df-iun 4993 df-br 5143 df-opab 5205 df-mpt 5226 df-id 5570 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-no 27563 |
This theorem is referenced by: nodmord 27573 elno2 27574 noseponlem 27584 noextend 27586 noextendseq 27587 noextenddif 27588 noextendlt 27589 noextendgt 27590 bdayfo 27597 nosepssdm 27606 nolt02olem 27614 nosupno 27623 nosupres 27627 nosupbnd1lem1 27628 nosupbnd1lem2 27629 nosupbnd1lem3 27630 nosupbnd1lem4 27631 nosupbnd1lem5 27632 nosupbnd1lem6 27633 nosupbnd1 27634 nosupbnd2lem1 27635 nosupbnd2 27636 noinfno 27638 noinfres 27642 noinfbnd1lem1 27643 noinfbnd1lem2 27644 noinfbnd1lem3 27645 noinfbnd1lem4 27646 noinfbnd1lem5 27647 noinfbnd1lem6 27648 noinfbnd1 27649 noinfbnd2lem1 27650 noinfbnd2 27651 nosupinfsep 27652 noetasuplem3 27655 noetasuplem4 27656 noetainflem3 27659 noetainflem4 27660 bdaybndex 42784 |
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