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Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-inf2vnlem2 | Unicode version |
Description: Lemma for bj-inf2vnlem3 10767 and bj-inf2vnlem4 10768. Remark: unoptimized proof (have to use more deduction style). (Contributed by BJ, 8-Dec-2019.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
bj-inf2vnlem2 | Ind |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqeq1 2087 | . . . . . . 7 | |
2 | eqeq1 2087 | . . . . . . . 8 | |
3 | 2 | rexbidv 2369 | . . . . . . 7 |
4 | 1, 3 | orbi12d 739 | . . . . . 6 |
5 | 4 | rspcv 2697 | . . . . 5 |
6 | df-bj-ind 10722 | . . . . . . . . 9 Ind | |
7 | 6 | simplbi 268 | . . . . . . . 8 Ind |
8 | eleq1 2141 | . . . . . . . 8 | |
9 | 7, 8 | syl5ibr 154 | . . . . . . 7 Ind |
10 | 9 | a1dd 47 | . . . . . 6 Ind |
11 | vex 2604 | . . . . . . . . . 10 | |
12 | 11 | sucid 4172 | . . . . . . . . 9 |
13 | eleq2 2142 | . . . . . . . . . 10 | |
14 | 13 | eqcoms 2084 | . . . . . . . . 9 |
15 | 12, 14 | mpbii 146 | . . . . . . . 8 |
16 | eleq1 2141 | . . . . . . . . . . . . 13 | |
17 | eleq1 2141 | . . . . . . . . . . . . 13 | |
18 | 16, 17 | imbi12d 232 | . . . . . . . . . . . 12 |
19 | 18 | rspcv 2697 | . . . . . . . . . . 11 |
20 | bj-indsuc 10723 | . . . . . . . . . . . 12 Ind | |
21 | eleq1a 2150 | . . . . . . . . . . . 12 | |
22 | 20, 21 | syl6com 35 | . . . . . . . . . . 11 Ind |
23 | 19, 22 | syl8 70 | . . . . . . . . . 10 Ind |
24 | 23 | com13 79 | . . . . . . . . 9 Ind |
25 | 24 | com25 90 | . . . . . . . 8 Ind |
26 | 15, 25 | mpdi 42 | . . . . . . 7 Ind |
27 | 26 | rexlimiv 2471 | . . . . . 6 Ind |
28 | 10, 27 | jaoi 668 | . . . . 5 Ind |
29 | 5, 28 | syl6 33 | . . . 4 Ind |
30 | 29 | com3l 80 | . . 3 Ind |
31 | 30 | alrimdv 1797 | . 2 Ind |
32 | bi2.04 246 | . . 3 | |
33 | 32 | albii 1399 | . 2 |
34 | 31, 33 | syl6ib 159 | 1 Ind |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wo 661 wal 1282 wceq 1284 wcel 1433 wral 2348 wrex 2349 c0 3251 csuc 4120 Ind wind 10721 |
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-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 df-v 2603 df-un 2977 df-sn 3404 df-suc 4126 df-bj-ind 10722 |
This theorem is referenced by: bj-inf2vnlem3 10767 bj-inf2vnlem4 10768 |
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