Mathbox for Jim Kingdon |
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Description: Schroeder-Bernstein is not possible even for . We know by exmidsbth 13737 that full Schroeder-Bernstein will not be provable but what about the case where one of the sets is ? That case plus the Limited Principle of Omniscience (LPO) implies excluded middle, so we will not be able to prove it. (Contributed by Mario Carneiro and Jim Kingdon, 10-Jul-2023.) |
Ref | Expression |
---|---|
sbthom | Omni EXMID |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | p0ex 4161 | . . . . . . . . . . 11 | |
2 | 1 | ssex 4113 | . . . . . . . . . 10 |
3 | 2 | adantl 275 | . . . . . . . . 9 Omni |
4 | omex 4564 | . . . . . . . . 9 | |
5 | djuex 6999 | . . . . . . . . 9 ⊔ | |
6 | 3, 4, 5 | sylancl 410 | . . . . . . . 8 Omni ⊔ |
7 | simpll 519 | . . . . . . . 8 Omni | |
8 | ssdomg 6735 | . . . . . . . . . . . 12 | |
9 | 1, 8 | ax-mp 5 | . . . . . . . . . . 11 |
10 | domrefg 6724 | . . . . . . . . . . . . . 14 | |
11 | 4, 10 | ax-mp 5 | . . . . . . . . . . . . 13 |
12 | djudom 7049 | . . . . . . . . . . . . 13 ⊔ ⊔ | |
13 | 11, 12 | mpan2 422 | . . . . . . . . . . . 12 ⊔ ⊔ |
14 | df1o2 6388 | . . . . . . . . . . . . 13 | |
15 | djueq1 6996 | . . . . . . . . . . . . 13 ⊔ ⊔ | |
16 | 14, 15 | ax-mp 5 | . . . . . . . . . . . 12 ⊔ ⊔ |
17 | 13, 16 | breqtrrdi 4018 | . . . . . . . . . . 11 ⊔ ⊔ |
18 | 1onn 6479 | . . . . . . . . . . . . . 14 | |
19 | endjusym 7052 | . . . . . . . . . . . . . 14 ⊔ ⊔ | |
20 | 4, 18, 19 | mp2an 423 | . . . . . . . . . . . . 13 ⊔ ⊔ |
21 | omp1eom 7051 | . . . . . . . . . . . . 13 ⊔ | |
22 | 20, 21 | entr3i 6745 | . . . . . . . . . . . 12 ⊔ |
23 | domentr 6748 | . . . . . . . . . . . 12 ⊔ ⊔ ⊔ ⊔ | |
24 | 22, 23 | mpan2 422 | . . . . . . . . . . 11 ⊔ ⊔ ⊔ |
25 | 9, 17, 24 | 3syl 17 | . . . . . . . . . 10 ⊔ |
26 | 25 | adantl 275 | . . . . . . . . 9 Omni ⊔ |
27 | djudomr 7167 | . . . . . . . . . 10 ⊔ | |
28 | 3, 4, 27 | sylancl 410 | . . . . . . . . 9 Omni ⊔ |
29 | 26, 28 | jca 304 | . . . . . . . 8 Omni ⊔ ⊔ |
30 | breq1 3979 | . . . . . . . . . . 11 ⊔ ⊔ | |
31 | breq2 3980 | . . . . . . . . . . 11 ⊔ ⊔ | |
32 | 30, 31 | anbi12d 465 | . . . . . . . . . 10 ⊔ ⊔ ⊔ |
33 | breq1 3979 | . . . . . . . . . 10 ⊔ ⊔ | |
34 | 32, 33 | imbi12d 233 | . . . . . . . . 9 ⊔ ⊔ ⊔ ⊔ |
35 | 34 | spcgv 2808 | . . . . . . . 8 ⊔ ⊔ ⊔ ⊔ |
36 | 6, 7, 29, 35 | syl3c 63 | . . . . . . 7 Omni ⊔ |
37 | 36 | ensymd 6740 | . . . . . 6 Omni ⊔ |
38 | bren 6704 | . . . . . 6 ⊔ ⊔ | |
39 | 37, 38 | sylib 121 | . . . . 5 Omni ⊔ |
40 | simpllr 524 | . . . . . 6 Omni ⊔ Omni | |
41 | simplr 520 | . . . . . 6 Omni ⊔ | |
42 | simpr 109 | . . . . . 6 Omni ⊔ ⊔ | |
43 | 40, 41, 42 | sbthomlem 13738 | . . . . 5 Omni ⊔ |
44 | 39, 43 | exlimddv 1885 | . . . 4 Omni |
45 | 44 | ex 114 | . . 3 Omni |
46 | 45 | alrimiv 1861 | . 2 Omni |
47 | exmid01 4171 | . 2 EXMID | |
48 | 46, 47 | sylibr 133 | 1 Omni EXMID |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wo 698 wal 1340 wceq 1342 wex 1479 wcel 2135 cvv 2721 wss 3111 c0 3404 csn 3570 class class class wbr 3976 EXMIDwem 4167 com 4561 wf1o 5181 c1o 6368 cen 6695 cdom 6696 ⊔ cdju 6993 Omnicomni 7089 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-coll 4091 ax-sep 4094 ax-nul 4102 ax-pow 4147 ax-pr 4181 ax-un 4405 ax-setind 4508 ax-iinf 4559 |
This theorem depends on definitions: df-bi 116 df-dc 825 df-3an 969 df-tru 1345 df-fal 1348 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ne 2335 df-ral 2447 df-rex 2448 df-reu 2449 df-rab 2451 df-v 2723 df-sbc 2947 df-csb 3041 df-dif 3113 df-un 3115 df-in 3117 df-ss 3124 df-nul 3405 df-if 3516 df-pw 3555 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-int 3819 df-iun 3862 df-br 3977 df-opab 4038 df-mpt 4039 df-tr 4075 df-exmid 4168 df-id 4265 df-iord 4338 df-on 4340 df-suc 4343 df-iom 4562 df-xp 4604 df-rel 4605 df-cnv 4606 df-co 4607 df-dm 4608 df-rn 4609 df-res 4610 df-ima 4611 df-iota 5147 df-fun 5184 df-fn 5185 df-f 5186 df-f1 5187 df-fo 5188 df-f1o 5189 df-fv 5190 df-ov 5839 df-oprab 5840 df-mpo 5841 df-1st 6100 df-2nd 6101 df-1o 6375 df-2o 6376 df-er 6492 df-map 6607 df-en 6698 df-dom 6699 df-dju 6994 df-inl 7003 df-inr 7004 df-case 7040 df-omni 7090 |
This theorem is referenced by: (None) |
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