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| Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-inf2vnlem2 | Unicode version | ||
| Description: Lemma for bj-inf2vnlem3 10097 and bj-inf2vnlem4 10098. Remark: unoptimized proof (have to use more deduction style). (Contributed by BJ, 8-Dec-2019.) (Proof modification is discouraged.) |
| Ref | Expression |
|---|---|
| bj-inf2vnlem2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeq1 2046 |
. . . . . . 7
| |
| 2 | eqeq1 2046 |
. . . . . . . 8
| |
| 3 | 2 | rexbidv 2327 |
. . . . . . 7
|
| 4 | 1, 3 | orbi12d 707 |
. . . . . 6
|
| 5 | 4 | rspcv 2652 |
. . . . 5
|
| 6 | df-bj-ind 10051 |
. . . . . . . . 9
| |
| 7 | 6 | simplbi 259 |
. . . . . . . 8
|
| 8 | eleq1 2100 |
. . . . . . . 8
| |
| 9 | 7, 8 | syl5ibr 145 |
. . . . . . 7
|
| 10 | 9 | a1dd 42 |
. . . . . 6
|
| 11 | vex 2560 |
. . . . . . . . . 10
| |
| 12 | 11 | sucid 4154 |
. . . . . . . . 9
|
| 13 | eleq2 2101 |
. . . . . . . . . 10
| |
| 14 | 13 | eqcoms 2043 |
. . . . . . . . 9
|
| 15 | 12, 14 | mpbii 136 |
. . . . . . . 8
|
| 16 | eleq1 2100 |
. . . . . . . . . . . . 13
| |
| 17 | eleq1 2100 |
. . . . . . . . . . . . 13
| |
| 18 | 16, 17 | imbi12d 223 |
. . . . . . . . . . . 12
|
| 19 | 18 | rspcv 2652 |
. . . . . . . . . . 11
|
| 20 | bj-indsuc 10052 |
. . . . . . . . . . . 12
| |
| 21 | eleq1a 2109 |
. . . . . . . . . . . 12
| |
| 22 | 20, 21 | syl6com 31 |
. . . . . . . . . . 11
|
| 23 | 19, 22 | syl8 65 |
. . . . . . . . . 10
|
| 24 | 23 | com13 74 |
. . . . . . . . 9
|
| 25 | 24 | com25 85 |
. . . . . . . 8
|
| 26 | 15, 25 | mpdi 38 |
. . . . . . 7
|
| 27 | 26 | rexlimiv 2427 |
. . . . . 6
|
| 28 | 10, 27 | jaoi 636 |
. . . . 5
|
| 29 | 5, 28 | syl6 29 |
. . . 4
|
| 30 | 29 | com3l 75 |
. . 3
|
| 31 | 30 | alrimdv 1756 |
. 2
|
| 32 | bi2.04 237 |
. . 3
| |
| 33 | 32 | albii 1359 |
. 2
|
| 34 | 31, 33 | syl6ib 150 |
1
|
| 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 99 ax-ia2 100 ax-ia3 101 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-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
| This theorem depends on definitions: df-bi 110 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-v 2559 df-un 2922 df-sn 3381 df-suc 4108 df-bj-ind 10051 |
| This theorem is referenced by: bj-inf2vnlem3 10097 bj-inf2vnlem4 10098 |
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