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Mirrors > Home > ILE Home > Th. List > topnfn | GIF version |
Description: The topology extractor function is a function on the universe. (Contributed by Mario Carneiro, 13-Aug-2015.) |
Ref | Expression |
---|---|
topnfn | ⊢ TopOpen Fn V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restfn 12113 | . . 3 ⊢ ↾t Fn (V × V) | |
2 | tsetslid 12098 | . . . . 5 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
3 | 2 | slotex 11975 | . . . 4 ⊢ (𝑤 ∈ V → (TopSet‘𝑤) ∈ V) |
4 | 3 | elv 2685 | . . 3 ⊢ (TopSet‘𝑤) ∈ V |
5 | baseslid 12004 | . . . . 5 ⊢ (Base = Slot (Base‘ndx) ∧ (Base‘ndx) ∈ ℕ) | |
6 | 5 | slotex 11975 | . . . 4 ⊢ (𝑤 ∈ V → (Base‘𝑤) ∈ V) |
7 | 6 | elv 2685 | . . 3 ⊢ (Base‘𝑤) ∈ V |
8 | fnovex 5797 | . . 3 ⊢ (( ↾t Fn (V × V) ∧ (TopSet‘𝑤) ∈ V ∧ (Base‘𝑤) ∈ V) → ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V) | |
9 | 1, 4, 7, 8 | mp3an 1315 | . 2 ⊢ ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V |
10 | df-topn 12112 | . 2 ⊢ TopOpen = (𝑤 ∈ V ↦ ((TopSet‘𝑤) ↾t (Base‘𝑤))) | |
11 | 9, 10 | fnmpti 5246 | 1 ⊢ TopOpen Fn V |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1480 Vcvv 2681 × cxp 4532 Fn wfn 5113 ‘cfv 5118 (class class class)co 5767 Basecbs 11948 TopSetcts 12016 ↾t crest 12109 TopOpenctopn 12110 |
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 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-coll 4038 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-cnex 7704 ax-resscn 7705 ax-1re 7707 ax-addrcl 7710 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-reu 2421 df-rab 2423 df-v 2683 df-sbc 2905 df-csb 2999 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-int 3767 df-iun 3810 df-br 3925 df-opab 3985 df-mpt 3986 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-f1 5123 df-fo 5124 df-f1o 5125 df-fv 5126 df-ov 5770 df-oprab 5771 df-mpo 5772 df-1st 6031 df-2nd 6032 df-inn 8714 df-2 8772 df-3 8773 df-4 8774 df-5 8775 df-6 8776 df-7 8777 df-8 8778 df-9 8779 df-ndx 11951 df-slot 11952 df-base 11954 df-tset 12029 df-rest 12111 df-topn 12112 |
This theorem is referenced by: istps 12188 |
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