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| Description: Express the predicate "is a topological space." |
| Ref | Expression |
|---|---|
| istps |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tpsex 7555 |
. 2
| |
| 2 | pm3.27 323 |
. . . 4
| |
| 3 | uniexg 2866 |
. . . . 5
| |
| 4 | 3 | adantr 389 |
. . . 4
|
| 5 | 2, 4 | eqeltrd 1545 |
. . 3
|
| 6 | elisset 1813 |
. . . 4
| |
| 7 | 6 | adantr 389 |
. . 3
|
| 8 | 5, 7 | jca 288 |
. 2
|
| 9 | eqeq1 1478 |
. . . . 5
| |
| 10 | 9 | anbi2d 615 |
. . . 4
|
| 11 | eleq1 1531 |
. . . . 5
| |
| 12 | unieq 2505 |
. . . . . 6
| |
| 13 | 12 | eqeq2d 1483 |
. . . . 5
|
| 14 | 11, 13 | anbi12d 627 |
. . . 4
|
| 15 | 10, 14 | opelopabg 2812 |
. . 3
|
| 16 | df-topsp 7543 |
. . . 4
| |
| 17 | 16 | eleq2i 1535 |
. . 3
|
| 18 | 15, 17 | syl5bb 531 |
. 2
|
| 19 | 1, 8, 18 | pm5.21nii 678 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: istps2 7557 retps 7608 stoi 10519 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 ax-un 2861 ax-reg 4573 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-ral 1646 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-br 2615 df-opab 2662 df-xp 3179 df-rel 3180 df-top 7542 df-topsp 7543 |