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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 |
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Ref | Expression |
---|---|
ordtri2or2exmid |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ordtri2or2exmid.1 |
. . . 4
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2 | ordtri2or2exmidlem 4297 |
. . . . 5
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3 | suc0 4194 |
. . . . . 6
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4 | 0elon 4175 |
. . . . . . 7
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5 | 4 | onsuci 4288 |
. . . . . 6
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6 | 3, 5 | eqeltrri 2156 |
. . . . 5
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7 | sseq1 3029 |
. . . . . . 7
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8 | sseq2 3030 |
. . . . . . 7
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9 | 7, 8 | orbi12d 740 |
. . . . . 6
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10 | sseq2 3030 |
. . . . . . 7
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11 | sseq1 3029 |
. . . . . . 7
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
12 | 10, 11 | orbi12d 740 |
. . . . . 6
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13 | 9, 12 | rspc2va 2722 |
. . . . 5
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14 | 2, 6, 13 | mpanl12 427 |
. . . 4
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15 | 1, 14 | ax-mp 7 |
. . 3
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16 | elirr 4312 |
. . . . 5
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17 | simpl 107 |
. . . . . . 7
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18 | simpr 108 |
. . . . . . . 8
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19 | p0ex 3979 |
. . . . . . . . . 10
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20 | 19 | prid2 3517 |
. . . . . . . . 9
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21 | biidd 170 |
. . . . . . . . . 10
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22 | 21 | elrab3 2758 |
. . . . . . . . 9
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23 | 20, 22 | ax-mp 7 |
. . . . . . . 8
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24 | 18, 23 | sylibr 132 |
. . . . . . 7
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25 | 17, 24 | sseldd 3009 |
. . . . . 6
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26 | 25 | ex 113 |
. . . . 5
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27 | 16, 26 | mtoi 623 |
. . . 4
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28 | snssg 3541 |
. . . . . 6
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29 | 4, 28 | ax-mp 7 |
. . . . 5
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30 | 0ex 3925 |
. . . . . . . 8
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31 | 30 | prid1 3516 |
. . . . . . 7
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32 | biidd 170 |
. . . . . . . 8
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33 | 32 | elrab3 2758 |
. . . . . . 7
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34 | 31, 33 | ax-mp 7 |
. . . . . 6
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35 | 34 | biimpi 118 |
. . . . 5
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36 | 29, 35 | sylbir 133 |
. . . 4
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37 | 27, 36 | orim12i 709 |
. . 3
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38 | 15, 37 | ax-mp 7 |
. 2
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39 | orcom 680 |
. 2
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40 | 38, 39 | mpbi 143 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2065 ax-sep 3916 ax-nul 3924 ax-pow 3968 ax-pr 3992 ax-un 4216 ax-setind 4308 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-nf 1391 df-sb 1688 df-clab 2070 df-cleq 2076 df-clel 2079 df-nfc 2212 df-ne 2250 df-ral 2358 df-rex 2359 df-rab 2362 df-v 2612 df-dif 2984 df-un 2986 df-in 2988 df-ss 2995 df-nul 3268 df-pw 3402 df-sn 3422 df-pr 3423 df-uni 3622 df-tr 3896 df-iord 4149 df-on 4151 df-suc 4154 |
This theorem is referenced by: onintexmid 4343 |
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