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Mirrors > Home > MPE Home > Th. List > ondomon | Unicode version |
Description: The collection of ordinal numbers dominated by a set is an ordinal number. (In general, not all collections of ordinal numbers are ordinal.) Theorem 56 of [Suppes] p. 227. This theorem can be proved (with a longer proof) without the Axiom of Choice; see hartogs 7990. (Contributed by NM, 7-Nov-2003.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
ondomon |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | onelon 4908 | . . . . . . . . . . . 12 | |
2 | vex 3112 | . . . . . . . . . . . . 13 | |
3 | onelss 4925 | . . . . . . . . . . . . . 14 | |
4 | 3 | imp 429 | . . . . . . . . . . . . 13 |
5 | ssdomg 7581 | . . . . . . . . . . . . 13 | |
6 | 2, 4, 5 | mpsyl 63 | . . . . . . . . . . . 12 |
7 | 1, 6 | jca 532 | . . . . . . . . . . 11 |
8 | domtr 7588 | . . . . . . . . . . . . 13 | |
9 | 8 | anim2i 569 | . . . . . . . . . . . 12 |
10 | 9 | anassrs 648 | . . . . . . . . . . 11 |
11 | 7, 10 | sylan 471 | . . . . . . . . . 10 |
12 | 11 | exp31 604 | . . . . . . . . 9 |
13 | 12 | com12 31 | . . . . . . . 8 |
14 | 13 | impd 431 | . . . . . . 7 |
15 | breq1 4455 | . . . . . . . 8 | |
16 | 15 | elrab 3257 | . . . . . . 7 |
17 | breq1 4455 | . . . . . . . 8 | |
18 | 17 | elrab 3257 | . . . . . . 7 |
19 | 14, 16, 18 | 3imtr4g 270 | . . . . . 6 |
20 | 19 | imp 429 | . . . . 5 |
21 | 20 | gen2 1619 | . . . 4 |
22 | dftr2 4547 | . . . 4 | |
23 | 21, 22 | mpbir 209 | . . 3 |
24 | ssrab2 3584 | . . 3 | |
25 | ordon 6618 | . . 3 | |
26 | trssord 4900 | . . 3 | |
27 | 23, 24, 25, 26 | mp3an 1324 | . 2 |
28 | elex 3118 | . . . . . 6 | |
29 | canth2g 7691 | . . . . . . . . 9 | |
30 | domsdomtr 7672 | . . . . . . . . 9 | |
31 | 29, 30 | sylan2 474 | . . . . . . . 8 |
32 | 31 | expcom 435 | . . . . . . 7 |
33 | 32 | ralrimivw 2872 | . . . . . 6 |
34 | 28, 33 | syl 16 | . . . . 5 |
35 | ss2rab 3575 | . . . . 5 | |
36 | 34, 35 | sylibr 212 | . . . 4 |
37 | pwexg 4636 | . . . . . 6 | |
38 | numth3 8871 | . . . . . 6 | |
39 | cardval2 8393 | . . . . . 6 | |
40 | 37, 38, 39 | 3syl 20 | . . . . 5 |
41 | fvex 5881 | . . . . 5 | |
42 | 40, 41 | syl6eqelr 2554 | . . . 4 |
43 | ssexg 4598 | . . . 4 | |
44 | 36, 42, 43 | syl2anc 661 | . . 3 |
45 | elong 4891 | . . 3 | |
46 | 44, 45 | syl 16 | . 2 |
47 | 27, 46 | mpbiri 233 | 1 |
Colors of variables: wff setvar class |
Syntax hints: -> wi 4 <-> wb 184
/\ wa 369 A. wal 1393 = wceq 1395
e. wcel 1818 A. wral 2807 { crab 2811
cvv 3109
C_ wss 3475 ~P cpw 4012 class class class wbr 4452
Tr wtr 4545 Ord word 4882 con0 4883 dom cdm 5004 ` cfv 5593
cdom 7534 csdm 7535 ccrd 8337 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1618 ax-4 1631 ax-5 1704 ax-6 1747 ax-7 1790 ax-8 1820 ax-9 1822 ax-10 1837 ax-11 1842 ax-12 1854 ax-13 1999 ax-ext 2435 ax-rep 4563 ax-sep 4573 ax-nul 4581 ax-pow 4630 ax-pr 4691 ax-un 6592 ax-ac2 8864 |
This theorem depends on definitions: df-bi 185 df-or 370 df-an 371 df-3or 974 df-3an 975 df-tru 1398 df-ex 1613 df-nf 1617 df-sb 1740 df-eu 2286 df-mo 2287 df-clab 2443 df-cleq 2449 df-clel 2452 df-nfc 2607 df-ne 2654 df-ral 2812 df-rex 2813 df-reu 2814 df-rmo 2815 df-rab 2816 df-v 3111 df-sbc 3328 df-csb 3435 df-dif 3478 df-un 3480 df-in 3482 df-ss 3489 df-pss 3491 df-nul 3785 df-if 3942 df-pw 4014 df-sn 4030 df-pr 4032 df-tp 4034 df-op 4036 df-uni 4250 df-int 4287 df-iun 4332 df-br 4453 df-opab 4511 df-mpt 4512 df-tr 4546 df-eprel 4796 df-id 4800 df-po 4805 df-so 4806 df-fr 4843 df-se 4844 df-we 4845 df-ord 4886 df-on 4887 df-suc 4889 df-xp 5010 df-rel 5011 df-cnv 5012 df-co 5013 df-dm 5014 df-rn 5015 df-res 5016 df-ima 5017 df-iota 5556 df-fun 5595 df-fn 5596 df-f 5597 df-f1 5598 df-fo 5599 df-f1o 5600 df-fv 5601 df-isom 5602 df-riota 6257 df-recs 7061 df-er 7330 df-en 7537 df-dom 7538 df-sdom 7539 df-card 8341 df-ac 8518 |
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