| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3891 |
. 2
| |
| 2 | funfn 5348 |
. . . . . . . 8
| |
| 3 | fvelrnb 5681 |
. . . . . . . 8
| |
| 4 | 2, 3 | sylbi 121 |
. . . . . . 7
|
| 5 | 4 | anbi2d 464 |
. . . . . 6
|
| 6 | r19.42v 2688 |
. . . . . 6
| |
| 7 | 5, 6 | bitr4di 198 |
. . . . 5
|
| 8 | eleq2 2293 |
. . . . . . 7
| |
| 9 | 8 | biimparc 299 |
. . . . . 6
|
| 10 | 9 | reximi 2627 |
. . . . 5
|
| 11 | 7, 10 | biimtrdi 163 |
. . . 4
|
| 12 | 11 | exlimdv 1865 |
. . 3
|
| 13 | fvelrn 5766 |
. . . . 5
| |
| 14 | funfvex 5644 |
. . . . . 6
| |
| 15 | eleq2 2293 |
. . . . . . . 8
| |
| 16 | eleq1 2292 |
. . . . . . . 8
| |
| 17 | 15, 16 | anbi12d 473 |
. . . . . . 7
|
| 18 | 17 | spcegv 2891 |
. . . . . 6
|
| 19 | 14, 18 | syl 14 |
. . . . 5
|
| 20 | 13, 19 | mpan2d 428 |
. . . 4
|
| 21 | 20 | rexlimdva 2648 |
. . 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 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-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4258 ax-pr 4293 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 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-ral 2513 df-rex 2514 df-v 2801 df-sbc 3029 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4384 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-iota 5278 df-fun 5320 df-fn 5321 df-fv 5326 |
| This theorem is referenced by: fnunirn 5891 |
| Copyright terms: Public domain | W3C validator |