| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: Express the predicate "is a topological space." |
| Ref | Expression |
|---|---|
| istps |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tpsex 7606 |
. 2
| |
| 2 | pm3.27 323 |
. . . 4
| |
| 3 | uniexg 2877 |
. . . . 5
| |
| 4 | 3 | adantr 391 |
. . . 4
|
| 5 | 2, 4 | eqeltrd 1551 |
. . 3
|
| 6 | elisset 1820 |
. . . 4
| |
| 7 | 6 | adantr 391 |
. . 3
|
| 8 | 5, 7 | jca 288 |
. 2
|
| 9 | eqeq1 1484 |
. . . . 5
| |
| 10 | 9 | anbi2d 618 |
. . . 4
|
| 11 | eleq1 1537 |
. . . . 5
| |
| 12 | unieq 2514 |
. . . . . 6
| |
| 13 | 12 | eqeq2d 1489 |
. . . . 5
|
| 14 | 11, 13 | anbi12d 630 |
. . . 4
|
| 15 | 10, 14 | opelopabg 2823 |
. . 3
|
| 16 | df-topsp 7595 |
. . . 4
| |
| 17 | 16 | eleq2i 1541 |
. . 3
|
| 18 | 15, 17 | syl5bb 534 |
. 2
|
| 19 | 1, 8, 18 | pm5.21nii 681 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: istps2 7608 retps 7655 stoi 10610 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-pow 2748 ax-pr 2785 ax-un 2872 ax-reg 4602 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-uni 2508 df-br 2625 df-opab 2672 df-xp 3190 df-rel 3191 df-top 7594 df-topsp 7595 |