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Mirrors > Home > MPE Home > Th. List > onsdom | Structured version Visualization version GIF version |
Description: Any well-orderable set is strictly dominated by an ordinal number. (Contributed by Jeff Hankins, 22-Oct-2009.) (Proof shortened by Mario Carneiro, 15-May-2015.) |
Ref | Expression |
---|---|
onsdom | β’ (π΄ β dom card β βπ₯ β On π΄ βΊ π₯) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | harcl 9551 | . 2 β’ (harβπ΄) β On | |
2 | harsdom 9987 | . 2 β’ (π΄ β dom card β π΄ βΊ (harβπ΄)) | |
3 | breq2 5143 | . . 3 β’ (π₯ = (harβπ΄) β (π΄ βΊ π₯ β π΄ βΊ (harβπ΄))) | |
4 | 3 | rspcev 3604 | . 2 β’ (((harβπ΄) β On β§ π΄ βΊ (harβπ΄)) β βπ₯ β On π΄ βΊ π₯) |
5 | 1, 2, 4 | sylancr 586 | 1 β’ (π΄ β dom card β βπ₯ β On π΄ βΊ π₯) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β wcel 2098 βwrex 3062 class class class wbr 5139 dom cdm 5667 Oncon0 6355 βcfv 6534 βΊ csdm 8935 harchar 9548 cardccrd 9927 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2695 ax-rep 5276 ax-sep 5290 ax-nul 5297 ax-pow 5354 ax-pr 5418 ax-un 7719 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3960 df-nul 4316 df-if 4522 df-pw 4597 df-sn 4622 df-pr 4624 df-op 4628 df-uni 4901 df-int 4942 df-iun 4990 df-br 5140 df-opab 5202 df-mpt 5223 df-tr 5257 df-id 5565 df-eprel 5571 df-po 5579 df-so 5580 df-fr 5622 df-se 5623 df-we 5624 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-pred 6291 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6486 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-isom 6543 df-riota 7358 df-ov 7405 df-2nd 7970 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-oi 9502 df-har 9549 df-card 9931 |
This theorem is referenced by: (None) |
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