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Mirrors > Home > ILE Home > Th. List > rest0 | Unicode version |
Description: The subspace topology induced by the topology on the empty set. (Contributed by FL, 22-Dec-2008.) (Revised by Mario Carneiro, 1-May-2015.) |
Ref | Expression |
---|---|
rest0 | ↾t |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0ex 4125 | . . . 4 | |
2 | restval 12616 | . . . 4 ↾t | |
3 | 1, 2 | mpan2 425 | . . 3 ↾t |
4 | in0 3455 | . . . . . . 7 | |
5 | 1 | elsn2 3623 | . . . . . . 7 |
6 | 4, 5 | mpbir 146 | . . . . . 6 |
7 | 6 | a1i 9 | . . . . 5 |
8 | 7 | fmpttd 5663 | . . . 4 |
9 | 8 | frnd 5367 | . . 3 |
10 | 3, 9 | eqsstrd 3189 | . 2 ↾t |
11 | resttop 13241 | . . . . 5 ↾t | |
12 | 1, 11 | mpan2 425 | . . . 4 ↾t |
13 | 0opn 13075 | . . . 4 ↾t ↾t | |
14 | 12, 13 | syl 14 | . . 3 ↾t |
15 | 14 | snssd 3734 | . 2 ↾t |
16 | 10, 15 | eqssd 3170 | 1 ↾t |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 104 wceq 1353 wcel 2146 cvv 2735 cin 3126 c0 3420 csn 3589 cmpt 4059 crn 4621 (class class class)co 5865 ↾t crest 12610 ctop 13066 |
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-in1 614 ax-in2 615 ax-io 709 ax-5 1445 ax-7 1446 ax-gen 1447 ax-ie1 1491 ax-ie2 1492 ax-8 1502 ax-10 1503 ax-11 1504 ax-i12 1505 ax-bndl 1507 ax-4 1508 ax-17 1524 ax-i9 1528 ax-ial 1532 ax-i5r 1533 ax-13 2148 ax-14 2149 ax-ext 2157 ax-coll 4113 ax-sep 4116 ax-nul 4124 ax-pow 4169 ax-pr 4203 ax-un 4427 ax-setind 4530 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1459 df-sb 1761 df-eu 2027 df-mo 2028 df-clab 2162 df-cleq 2168 df-clel 2171 df-nfc 2306 df-ne 2346 df-ral 2458 df-rex 2459 df-reu 2460 df-rab 2462 df-v 2737 df-sbc 2961 df-csb 3056 df-dif 3129 df-un 3131 df-in 3133 df-ss 3140 df-nul 3421 df-pw 3574 df-sn 3595 df-pr 3596 df-op 3598 df-uni 3806 df-iun 3884 df-br 3999 df-opab 4060 df-mpt 4061 df-id 4287 df-xp 4626 df-rel 4627 df-cnv 4628 df-co 4629 df-dm 4630 df-rn 4631 df-res 4632 df-ima 4633 df-iota 5170 df-fun 5210 df-fn 5211 df-f 5212 df-f1 5213 df-fo 5214 df-f1o 5215 df-fv 5216 df-ov 5868 df-oprab 5869 df-mpo 5870 df-1st 6131 df-2nd 6132 df-rest 12612 df-topgen 12631 df-top 13067 df-bases 13112 |
This theorem is referenced by: (None) |
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