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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 13190 | . . 3 ⊢ ↾t Fn (V × V) | |
| 2 | tsetslid 13135 | . . . . 5 ⊢ (TopSet = Slot (TopSet‘ndx) ∧ (TopSet‘ndx) ∈ ℕ) | |
| 3 | 2 | slotex 12974 | . . . 4 ⊢ (𝑤 ∈ V → (TopSet‘𝑤) ∈ V) |
| 4 | 3 | elv 2780 | . . 3 ⊢ (TopSet‘𝑤) ∈ V |
| 5 | baseslid 13004 | . . . . 5 ⊢ (Base = Slot (Base‘ndx) ∧ (Base‘ndx) ∈ ℕ) | |
| 6 | 5 | slotex 12974 | . . . 4 ⊢ (𝑤 ∈ V → (Base‘𝑤) ∈ V) |
| 7 | 6 | elv 2780 | . . 3 ⊢ (Base‘𝑤) ∈ V |
| 8 | fnovex 6000 | . . 3 ⊢ (( ↾t Fn (V × V) ∧ (TopSet‘𝑤) ∈ V ∧ (Base‘𝑤) ∈ V) → ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V) | |
| 9 | 1, 4, 7, 8 | mp3an 1350 | . 2 ⊢ ((TopSet‘𝑤) ↾t (Base‘𝑤)) ∈ V |
| 10 | df-topn 13189 | . 2 ⊢ TopOpen = (𝑤 ∈ V ↦ ((TopSet‘𝑤) ↾t (Base‘𝑤))) | |
| 11 | 9, 10 | fnmpti 5424 | 1 ⊢ TopOpen Fn V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2178 Vcvv 2776 × cxp 4691 Fn wfn 5285 ‘cfv 5290 (class class class)co 5967 Basecbs 12947 TopSetcts 13030 ↾t crest 13186 TopOpenctopn 13187 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-coll 4175 ax-sep 4178 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-cnex 8051 ax-resscn 8052 ax-1re 8054 ax-addrcl 8057 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-reu 2493 df-rab 2495 df-v 2778 df-sbc 3006 df-csb 3102 df-un 3178 df-in 3180 df-ss 3187 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-int 3900 df-iun 3943 df-br 4060 df-opab 4122 df-mpt 4123 df-id 4358 df-xp 4699 df-rel 4700 df-cnv 4701 df-co 4702 df-dm 4703 df-rn 4704 df-res 4705 df-ima 4706 df-iota 5251 df-fun 5292 df-fn 5293 df-f 5294 df-f1 5295 df-fo 5296 df-f1o 5297 df-fv 5298 df-ov 5970 df-oprab 5971 df-mpo 5972 df-1st 6249 df-2nd 6250 df-inn 9072 df-2 9130 df-3 9131 df-4 9132 df-5 9133 df-6 9134 df-7 9135 df-8 9136 df-9 9137 df-ndx 12950 df-slot 12951 df-base 12953 df-tset 13043 df-rest 13188 df-topn 13189 |
| This theorem is referenced by: prdsex 13216 prdsval 13220 prdsbaslemss 13221 psrval 14543 fnpsr 14544 psrbasg 14551 psrplusgg 14555 istps 14619 |
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