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| Mirrors > Home > ILE Home > Th. List > Mathboxes > bj-inf2vnlem2 | Unicode version | ||
| Description: Lemma for bj-inf2vnlem3 15945 and bj-inf2vnlem4 15946. 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 2212 |
. . . . . . 7
| |
| 2 | eqeq1 2212 |
. . . . . . . 8
| |
| 3 | 2 | rexbidv 2507 |
. . . . . . 7
|
| 4 | 1, 3 | orbi12d 795 |
. . . . . 6
|
| 5 | 4 | rspcv 2873 |
. . . . 5
|
| 6 | df-bj-ind 15900 |
. . . . . . . . 9
| |
| 7 | 6 | simplbi 274 |
. . . . . . . 8
|
| 8 | eleq1 2268 |
. . . . . . . 8
| |
| 9 | 7, 8 | imbitrrid 156 |
. . . . . . 7
|
| 10 | 9 | a1dd 48 |
. . . . . 6
|
| 11 | vex 2775 |
. . . . . . . . . 10
| |
| 12 | 11 | sucid 4465 |
. . . . . . . . 9
|
| 13 | eleq2 2269 |
. . . . . . . . . 10
| |
| 14 | 13 | eqcoms 2208 |
. . . . . . . . 9
|
| 15 | 12, 14 | mpbii 148 |
. . . . . . . 8
|
| 16 | eleq1 2268 |
. . . . . . . . . . . . 13
| |
| 17 | eleq1 2268 |
. . . . . . . . . . . . 13
| |
| 18 | 16, 17 | imbi12d 234 |
. . . . . . . . . . . 12
|
| 19 | 18 | rspcv 2873 |
. . . . . . . . . . 11
|
| 20 | bj-indsuc 15901 |
. . . . . . . . . . . 12
| |
| 21 | eleq1a 2277 |
. . . . . . . . . . . 12
| |
| 22 | 20, 21 | syl6com 35 |
. . . . . . . . . . 11
|
| 23 | 19, 22 | syl8 71 |
. . . . . . . . . 10
|
| 24 | 23 | com13 80 |
. . . . . . . . 9
|
| 25 | 24 | com25 91 |
. . . . . . . 8
|
| 26 | 15, 25 | mpdi 43 |
. . . . . . 7
|
| 27 | 26 | rexlimiv 2617 |
. . . . . 6
|
| 28 | 10, 27 | jaoi 718 |
. . . . 5
|
| 29 | 5, 28 | syl6 33 |
. . . 4
|
| 30 | 29 | com3l 81 |
. . 3
|
| 31 | 30 | alrimdv 1899 |
. 2
|
| 32 | bi2.04 248 |
. . 3
| |
| 33 | 32 | albii 1493 |
. 2
|
| 34 | 31, 33 | imbitrdi 161 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rex 2490 df-v 2774 df-un 3170 df-sn 3639 df-suc 4419 df-bj-ind 15900 |
| This theorem is referenced by: bj-inf2vnlem3 15945 bj-inf2vnlem4 15946 |
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