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| Mirrors > Home > ILE Home > Th. List > tgval2 | Unicode version | ||
| Description: Definition of a topology
generated by a basis in [Munkres] p. 78. Later
we show (in tgcl 14787) that |
| Ref | Expression |
|---|---|
| tgval2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tgval 13344 |
. 2
| |
| 2 | inss1 3427 |
. . . . . . . . 9
| |
| 3 | 2 | unissi 3916 |
. . . . . . . 8
|
| 4 | 3 | sseli 3223 |
. . . . . . 7
|
| 5 | 4 | pm4.71ri 392 |
. . . . . 6
|
| 6 | 5 | ralbii 2538 |
. . . . 5
|
| 7 | r19.26 2659 |
. . . . 5
| |
| 8 | 6, 7 | bitri 184 |
. . . 4
|
| 9 | dfss3 3216 |
. . . 4
| |
| 10 | dfss3 3216 |
. . . . 5
| |
| 11 | elin 3390 |
. . . . . . . . . . 11
| |
| 12 | 11 | anbi2i 457 |
. . . . . . . . . 10
|
| 13 | an12 563 |
. . . . . . . . . 10
| |
| 14 | 12, 13 | bitri 184 |
. . . . . . . . 9
|
| 15 | 14 | exbii 1653 |
. . . . . . . 8
|
| 16 | eluni 3896 |
. . . . . . . 8
| |
| 17 | df-rex 2516 |
. . . . . . . 8
| |
| 18 | 15, 16, 17 | 3bitr4i 212 |
. . . . . . 7
|
| 19 | velpw 3659 |
. . . . . . . . 9
| |
| 20 | 19 | anbi2i 457 |
. . . . . . . 8
|
| 21 | 20 | rexbii 2539 |
. . . . . . 7
|
| 22 | 18, 21 | bitr2i 185 |
. . . . . 6
|
| 23 | 22 | ralbii 2538 |
. . . . 5
|
| 24 | 10, 23 | anbi12i 460 |
. . . 4
|
| 25 | 8, 9, 24 | 3bitr4i 212 |
. . 3
|
| 26 | 25 | abbii 2347 |
. 2
|
| 27 | 1, 26 | eqtrdi 2280 |
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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-sbc 3032 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-iota 5286 df-fun 5328 df-fv 5334 df-topgen 13342 |
| This theorem is referenced by: eltg2 14776 |
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