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Mirrors > Home > ILE Home > Th. List > ordtri2or2exmid | Unicode version |
Description: Ordinal trichotomy implies excluded middle. (Contributed by Jim Kingdon, 29-Aug-2021.) |
Ref | Expression |
---|---|
ordtri2or2exmid.1 |
Ref | Expression |
---|---|
ordtri2or2exmid |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordtri2or2exmid.1 | . . . 4 | |
2 | ordtri2or2exmidlem 4441 | . . . . 5 | |
3 | suc0 4333 | . . . . . 6 | |
4 | 0elon 4314 | . . . . . . 7 | |
5 | 4 | onsuci 4432 | . . . . . 6 |
6 | 3, 5 | eqeltrri 2213 | . . . . 5 |
7 | sseq1 3120 | . . . . . . 7 | |
8 | sseq2 3121 | . . . . . . 7 | |
9 | 7, 8 | orbi12d 782 | . . . . . 6 |
10 | sseq2 3121 | . . . . . . 7 | |
11 | sseq1 3120 | . . . . . . 7 | |
12 | 10, 11 | orbi12d 782 | . . . . . 6 |
13 | 9, 12 | rspc2va 2803 | . . . . 5 |
14 | 2, 6, 13 | mpanl12 432 | . . . 4 |
15 | 1, 14 | ax-mp 5 | . . 3 |
16 | elirr 4456 | . . . . 5 | |
17 | simpl 108 | . . . . . . 7 | |
18 | simpr 109 | . . . . . . . 8 | |
19 | p0ex 4112 | . . . . . . . . . 10 | |
20 | 19 | prid2 3630 | . . . . . . . . 9 |
21 | biidd 171 | . . . . . . . . . 10 | |
22 | 21 | elrab3 2841 | . . . . . . . . 9 |
23 | 20, 22 | ax-mp 5 | . . . . . . . 8 |
24 | 18, 23 | sylibr 133 | . . . . . . 7 |
25 | 17, 24 | sseldd 3098 | . . . . . 6 |
26 | 25 | ex 114 | . . . . 5 |
27 | 16, 26 | mtoi 653 | . . . 4 |
28 | snssg 3656 | . . . . . 6 | |
29 | 4, 28 | ax-mp 5 | . . . . 5 |
30 | 0ex 4055 | . . . . . . . 8 | |
31 | 30 | prid1 3629 | . . . . . . 7 |
32 | biidd 171 | . . . . . . . 8 | |
33 | 32 | elrab3 2841 | . . . . . . 7 |
34 | 31, 33 | ax-mp 5 | . . . . . 6 |
35 | 34 | biimpi 119 | . . . . 5 |
36 | 29, 35 | sylbir 134 | . . . 4 |
37 | 27, 36 | orim12i 748 | . . 3 |
38 | 15, 37 | ax-mp 5 | . 2 |
39 | orcom 717 | . 2 | |
40 | 38, 39 | mpbi 144 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wa 103 wb 104 wo 697 wceq 1331 wcel 1480 wral 2416 crab 2420 wss 3071 c0 3363 csn 3527 cpr 3528 con0 4285 csuc 4287 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-nul 4054 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-ral 2421 df-rex 2422 df-rab 2425 df-v 2688 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-nul 3364 df-pw 3512 df-sn 3533 df-pr 3534 df-uni 3737 df-tr 4027 df-iord 4288 df-on 4290 df-suc 4293 |
This theorem is referenced by: onintexmid 4487 |
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