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| Description: The predicate " |
| Ref | Expression |
|---|---|
| iscld.1 |
|
| Ref | Expression |
|---|---|
| iscld |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iscld.1 |
. . . 4
| |
| 2 | 1 | cldval 8942 |
. . 3
|
| 3 | 2 | eleq2d 1964 |
. 2
|
| 4 | elisset 2299 |
. . . 4
| |
| 5 | 4 | adantl 424 |
. . 3
|
| 6 | ssexg 3457 |
. . . . . 6
| |
| 7 | 6 | ancoms 484 |
. . . . 5
|
| 8 | uniexg 3795 |
. . . . . 6
| |
| 9 | 8, 1 | syl5eqel 1975 |
. . . . 5
|
| 10 | 7, 9 | sylan 497 |
. . . 4
|
| 11 | 10 | adantrr 431 |
. . 3
|
| 12 | sseq1 2637 |
. . . . 5
| |
| 13 | difeq2 2719 |
. . . . . 6
| |
| 14 | 13 | eleq1d 1963 |
. . . . 5
|
| 15 | 12, 14 | anbi12d 690 |
. . . 4
|
| 16 | 15 | elabg 2405 |
. . 3
|
| 17 | 5, 11, 16 | pm5.21nd 744 |
. 2
|
| 18 | 3, 17 | bitrd 587 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: iscld2 8946 cldss 8947 cldopn 8948 topcld 8951 iincld 8955 islp2 9023 clint3 10184 subcld 10254 dtopcl 14948 hscptsscld 15434 ist1-2 15542 filcon 15580 ufcondr 15581 txcld 15914 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-rex 2110 df-rab 2112 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-uni 3178 df-br 3339 df-opab 3396 df-id 3586 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-rn 4005 df-res 4006 df-ima 4007 df-fun 4008 df-fv 4014 df-cld 8939 |