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| Mirrors > Home > ILE Home > Th. List > elunirn | Unicode version | ||
| Description: Membership in the union of the range of a function. (Contributed by NM, 24-Sep-2006.) |
| Ref | Expression |
|---|---|
| elunirn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluni 3919 |
. 2
| |
| 2 | funfn 5384 |
. . . . . . . 8
| |
| 3 | fvelrnb 5726 |
. . . . . . . 8
| |
| 4 | 2, 3 | sylbi 121 |
. . . . . . 7
|
| 5 | 4 | anbi2d 464 |
. . . . . 6
|
| 6 | r19.42v 2702 |
. . . . . 6
| |
| 7 | 5, 6 | bitr4di 198 |
. . . . 5
|
| 8 | eleq2 2298 |
. . . . . . 7
| |
| 9 | 8 | biimparc 299 |
. . . . . 6
|
| 10 | 9 | reximi 2641 |
. . . . 5
|
| 11 | 7, 10 | biimtrdi 163 |
. . . 4
|
| 12 | 11 | exlimdv 1868 |
. . 3
|
| 13 | fvelrn 5810 |
. . . . 5
| |
| 14 | funfvex 5689 |
. . . . . 6
| |
| 15 | eleq2 2298 |
. . . . . . . 8
| |
| 16 | eleq1 2297 |
. . . . . . . 8
| |
| 17 | 15, 16 | anbi12d 473 |
. . . . . . 7
|
| 18 | 17 | spcegv 2907 |
. . . . . 6
|
| 19 | 14, 18 | syl 14 |
. . . . 5
|
| 20 | 13, 19 | mpan2d 428 |
. . . 4
|
| 21 | 20 | rexlimdva 2662 |
. . 3
|
| 22 | 12, 21 | impbid 129 |
. 2
|
| 23 | 1, 22 | bitrid 192 |
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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4230 ax-pow 4289 ax-pr 4324 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-sbc 3045 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-iota 5314 df-fun 5356 df-fn 5357 df-fv 5362 |
| This theorem is referenced by: fnunirn 5942 |
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