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Mirrors > Home > ILE Home > Th. List > eltg | Unicode version |
Description: Membership in a topology generated by a basis. (Contributed by NM, 16-Jul-2006.) (Revised by Mario Carneiro, 10-Jan-2015.) |
Ref | Expression |
---|---|
eltg |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tgval 12770 |
. . 3
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2 | 1 | eleq2d 2259 |
. 2
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3 | elex 2763 |
. . . 4
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4 | 3 | adantl 277 |
. . 3
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5 | inex1g 4154 |
. . . . . 6
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6 | uniexg 4457 |
. . . . . 6
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7 | 5, 6 | syl 14 |
. . . . 5
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8 | ssexg 4157 |
. . . . 5
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9 | 7, 8 | sylan2 286 |
. . . 4
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10 | 9 | ancoms 268 |
. . 3
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11 | id 19 |
. . . . 5
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12 | pweq 3593 |
. . . . . . 7
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13 | 12 | ineq2d 3351 |
. . . . . 6
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14 | 13 | unieqd 3835 |
. . . . 5
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15 | 11, 14 | sseq12d 3201 |
. . . 4
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16 | 15 | elabg 2898 |
. . 3
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17 | 4, 10, 16 | pm5.21nd 917 |
. 2
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18 | 2, 17 | bitrd 188 |
1
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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 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-sep 4136 ax-pow 4192 ax-pr 4227 ax-un 4451 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ral 2473 df-rex 2474 df-v 2754 df-sbc 2978 df-un 3148 df-in 3150 df-ss 3157 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-br 4019 df-opab 4080 df-mpt 4081 df-id 4311 df-xp 4650 df-rel 4651 df-cnv 4652 df-co 4653 df-dm 4654 df-iota 5196 df-fun 5237 df-fv 5243 df-topgen 12768 |
This theorem is referenced by: eltg4i 14032 eltg3i 14033 bastg 14038 tgss 14040 eltop 14046 |
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