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| Mirrors > Home > ILE Home > Th. List > enctlem | Unicode version | ||
| Description: Lemma for enct 12999. One direction of the biconditional. (Contributed by Jim Kingdon, 23-Dec-2023.) |
| Ref | Expression |
|---|---|
| enctlem |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1oex 6568 |
. . . . 5
| |
| 2 | 1 | enref 6914 |
. . . 4
|
| 3 | djuen 7389 |
. . . 4
| |
| 4 | 2, 3 | mpan2 425 |
. . 3
|
| 5 | bren 6893 |
. . 3
| |
| 6 | 4, 5 | sylib 122 |
. 2
|
| 7 | f1ofo 5578 |
. . . . . 6
| |
| 8 | 7 | ad2antlr 489 |
. . . . 5
|
| 9 | foco 5558 |
. . . . . 6
| |
| 10 | vex 2802 |
. . . . . . . 8
| |
| 11 | vex 2802 |
. . . . . . . 8
| |
| 12 | 10, 11 | coex 5273 |
. . . . . . 7
|
| 13 | foeq1 5543 |
. . . . . . 7
| |
| 14 | 12, 13 | spcev 2898 |
. . . . . 6
|
| 15 | 9, 14 | syl 14 |
. . . . 5
|
| 16 | 8, 15 | sylancom 420 |
. . . 4
|
| 17 | 16 | ex 115 |
. . 3
|
| 18 | 17 | exlimdv 1865 |
. 2
|
| 19 | 6, 18 | exlimddv 1945 |
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-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4198 ax-sep 4201 ax-nul 4209 ax-pow 4257 ax-pr 4292 ax-un 4523 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-iun 3966 df-br 4083 df-opab 4145 df-mpt 4146 df-tr 4182 df-id 4383 df-iord 4456 df-on 4458 df-suc 4461 df-xp 4724 df-rel 4725 df-cnv 4726 df-co 4727 df-dm 4728 df-rn 4729 df-res 4730 df-ima 4731 df-iota 5277 df-fun 5319 df-fn 5320 df-f 5321 df-f1 5322 df-fo 5323 df-f1o 5324 df-fv 5325 df-1st 6284 df-2nd 6285 df-1o 6560 df-er 6678 df-en 6886 df-dju 7201 df-inl 7210 df-inr 7211 |
| This theorem is referenced by: enct 12999 |
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