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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 13540 | . . 3 ⊢ ↾t Fn (V × V) | |
| 2 | tsetslid 13485 | . . . . 5 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
| 3 | 2 | slotex 13323 | . . . 4 ⊢ (𝑤 ∈ V → (TopSet‘𝑤) ∈ V) |
| 4 | 3 | elv 2819 | . . 3 ⊢ (TopSet‘𝑤) ∈ V |
| 5 | baseslid 13354 | . . . . 5 ⊢ (Base = Slot (Base‘ndx) ∧ (Base‘ndx) ∈ ℕ) | |
| 6 | 5 | slotex 13323 | . . . 4 ⊢ (𝑤 ∈ V → (Base‘𝑤) ∈ V) |
| 7 | 6 | elv 2819 | . . 3 ⊢ (Base‘𝑤) ∈ V |
| 8 | fnovex 6091 | . . 3 ⊢ (( ↾t Fn (V × V) ∧ (TopSet‘𝑤) ∈ V ∧ (Base‘𝑤) ∈ V) → ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V) | |
| 9 | 1, 4, 7, 8 | mp3an 1374 | . 2 ⊢ ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V |
| 10 | df-topn 13539 | . 2 ⊢ TopOpen = (𝑤 ∈ V ↦ ((TopSet‘𝑤) ↾t (Base‘𝑤))) | |
| 11 | 9, 10 | fnmpti 5492 | 1 ⊢ TopOpen Fn V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2205 Vcvv 2815 × cxp 4752 Fn wfn 5352 ‘cfv 5357 (class class class)co 6058 Basecbs 13296 TopSetcts 13380 ↾t crest 13536 TopOpenctopn 13537 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4230 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-cnex 8234 ax-resscn 8235 ax-1re 8237 ax-addrcl 8240 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-inn 9255 df-2 9313 df-3 9314 df-4 9315 df-5 9316 df-6 9317 df-7 9318 df-8 9319 df-9 9320 df-ndx 13299 df-slot 13300 df-base 13302 df-tset 13393 df-rest 13538 df-topn 13539 |
| This theorem is referenced by: prdsex 14114 prdsval 14115 prdsbaslemss 14116 psrval 14940 fnpsr 14941 psrbasg 14955 psrplusgg 14959 istps 15023 |
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