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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 518 | . . . . . . 7 | |
2 | noel 3367 | . . . . . . . . 9 | |
3 | eleq2 2203 | . . . . . . . . 9 | |
4 | 2, 3 | mtbiri 664 | . . . . . . . 8 |
5 | 4 | adantl 275 | . . . . . . 7 |
6 | 1, 5 | pm2.21dd 609 | . . . . . 6 |
7 | eleq2 2203 | . . . . . . . . . . 11 | |
8 | 7 | biimpac 296 | . . . . . . . . . 10 |
9 | velsn 3544 | . . . . . . . . . 10 | |
10 | 8, 9 | sylib 121 | . . . . . . . . 9 |
11 | orc 701 | . . . . . . . . . 10 | |
12 | vex 2689 | . . . . . . . . . . 11 | |
13 | 12 | elpr 3548 | . . . . . . . . . 10 |
14 | 11, 13 | sylibr 133 | . . . . . . . . 9 |
15 | 10, 14 | syl 14 | . . . . . . . 8 |
16 | 15 | adantlr 468 | . . . . . . 7 |
17 | biidd 171 | . . . . . . . . . 10 | |
18 | 17 | elrab 2840 | . . . . . . . . 9 |
19 | 18 | simprbi 273 | . . . . . . . 8 |
20 | 19 | ad2antlr 480 | . . . . . . 7 |
21 | biidd 171 | . . . . . . . 8 | |
22 | 21 | elrab 2840 | . . . . . . 7 |
23 | 16, 20, 22 | sylanbrc 413 | . . . . . 6 |
24 | elrabi 2837 | . . . . . . . 8 | |
25 | vex 2689 | . . . . . . . . 9 | |
26 | 25 | elpr 3548 | . . . . . . . 8 |
27 | 24, 26 | sylib 121 | . . . . . . 7 |
28 | 27 | adantl 275 | . . . . . 6 |
29 | 6, 23, 28 | mpjaodan 787 | . . . . 5 |
30 | 29 | gen2 1426 | . . . 4 |
31 | dftr2 4028 | . . . 4 | |
32 | 30, 31 | mpbir 145 | . . 3 |
33 | ssrab2 3182 | . . 3 | |
34 | 2ordpr 4439 | . . 3 | |
35 | trssord 4302 | . . 3 | |
36 | 32, 33, 34, 35 | mp3an 1315 | . 2 |
37 | pp0ex 4113 | . . . 4 | |
38 | 37 | rabex 4072 | . . 3 |
39 | 38 | elon 4296 | . 2 |
40 | 36, 39 | mpbir 145 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wa 103 wo 697 wal 1329 wceq 1331 wcel 1480 crab 2420 wss 3071 c0 3363 csn 3527 cpr 3528 wtr 4026 word 4284 con0 4285 |
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-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 |
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-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: ordtri2or2exmid 4486 |
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