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Mirrors > Home > ILE Home > Th. List > topnfn | Unicode version |
Description: The topology extractor function is a function on the universe. (Contributed by Mario Carneiro, 13-Aug-2015.) |
Ref | Expression |
---|---|
topnfn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restfn 12583 | . . 3 ↾t | |
2 | tsetslid 12568 | . . . . 5 TopSet Slot TopSet TopSet | |
3 | 2 | slotex 12443 | . . . 4 TopSet |
4 | 3 | elv 2734 | . . 3 TopSet |
5 | baseslid 12472 | . . . . 5 Slot | |
6 | 5 | slotex 12443 | . . . 4 |
7 | 6 | elv 2734 | . . 3 |
8 | fnovex 5886 | . . 3 ↾t TopSet TopSet ↾t | |
9 | 1, 4, 7, 8 | mp3an 1332 | . 2 TopSet ↾t |
10 | df-topn 12582 | . 2 TopSet ↾t | |
11 | 9, 10 | fnmpti 5326 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 2141 cvv 2730 cxp 4609 wfn 5193 cfv 5198 (class class class)co 5853 cbs 12416 TopSetcts 12486 ↾t crest 12579 ctopn 12580 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-cnex 7865 ax-resscn 7866 ax-1re 7868 ax-addrcl 7871 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-reu 2455 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-inn 8879 df-2 8937 df-3 8938 df-4 8939 df-5 8940 df-6 8941 df-7 8942 df-8 8943 df-9 8944 df-ndx 12419 df-slot 12420 df-base 12422 df-tset 12499 df-rest 12581 df-topn 12582 |
This theorem is referenced by: istps 12824 |
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