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Mirrors > Home > ILE Home > Th. List > ordtri2or2exmidlem | Unicode version |
Description: A set which is if or if is an ordinal. (Contributed by Jim Kingdon, 29-Aug-2021.) |
Ref | Expression |
---|---|
ordtri2or2exmidlem |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpll 481 | . . . . . . 7 | |
2 | noel 3228 | . . . . . . . . 9 | |
3 | eleq2 2101 | . . . . . . . . 9 | |
4 | 2, 3 | mtbiri 600 | . . . . . . . 8 |
5 | 4 | adantl 262 | . . . . . . 7 |
6 | 1, 5 | pm2.21dd 550 | . . . . . 6 |
7 | eleq2 2101 | . . . . . . . . . . 11 | |
8 | 7 | biimpac 282 | . . . . . . . . . 10 |
9 | velsn 3392 | . . . . . . . . . 10 | |
10 | 8, 9 | sylib 127 | . . . . . . . . 9 |
11 | orc 633 | . . . . . . . . . 10 | |
12 | vex 2560 | . . . . . . . . . . 11 | |
13 | 12 | elpr 3396 | . . . . . . . . . 10 |
14 | 11, 13 | sylibr 137 | . . . . . . . . 9 |
15 | 10, 14 | syl 14 | . . . . . . . 8 |
16 | 15 | adantlr 446 | . . . . . . 7 |
17 | biidd 161 | . . . . . . . . . 10 | |
18 | 17 | elrab 2698 | . . . . . . . . 9 |
19 | 18 | simprbi 260 | . . . . . . . 8 |
20 | 19 | ad2antlr 458 | . . . . . . 7 |
21 | biidd 161 | . . . . . . . 8 | |
22 | 21 | elrab 2698 | . . . . . . 7 |
23 | 16, 20, 22 | sylanbrc 394 | . . . . . 6 |
24 | elrabi 2695 | . . . . . . . 8 | |
25 | vex 2560 | . . . . . . . . 9 | |
26 | 25 | elpr 3396 | . . . . . . . 8 |
27 | 24, 26 | sylib 127 | . . . . . . 7 |
28 | 27 | adantl 262 | . . . . . 6 |
29 | 6, 23, 28 | mpjaodan 711 | . . . . 5 |
30 | 29 | gen2 1339 | . . . 4 |
31 | dftr2 3856 | . . . 4 | |
32 | 30, 31 | mpbir 134 | . . 3 |
33 | ssrab2 3025 | . . 3 | |
34 | 2ordpr 4249 | . . 3 | |
35 | trssord 4117 | . . 3 | |
36 | 32, 33, 34, 35 | mp3an 1232 | . 2 |
37 | pp0ex 3940 | . . . 4 | |
38 | 37 | rabex 3901 | . . 3 |
39 | 38 | elon 4111 | . 2 |
40 | 36, 39 | mpbir 134 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 97 wo 629 wal 1241 wceq 1243 wcel 1393 crab 2310 wss 2917 c0 3224 csn 3375 cpr 3376 wtr 3854 word 4099 con0 4100 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-in1 544 ax-in2 545 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-nul 3883 ax-pow 3927 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-rab 2315 df-v 2559 df-dif 2920 df-un 2922 df-in 2924 df-ss 2931 df-nul 3225 df-pw 3361 df-sn 3381 df-pr 3382 df-uni 3581 df-tr 3855 df-iord 4103 df-on 4105 df-suc 4108 |
This theorem is referenced by: ordtri2or2exmid 4296 |
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