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| Mirrors > Home > ILE Home > Th. List > topnpropgd | GIF version | ||
| Description: The topology extractor function depends only on the base and topology components. (Contributed by NM, 18-Jul-2006.) (Revised by Jim Kingdon, 13-Feb-2023.) | 
| Ref | Expression | 
|---|---|
| topnpropd.1 | ⊢ (𝜑 → (Base‘𝐾) = (Base‘𝐿)) | 
| topnpropd.2 | ⊢ (𝜑 → (TopSet‘𝐾) = (TopSet‘𝐿)) | 
| topnpropgd.k | ⊢ (𝜑 → 𝐾 ∈ 𝑉) | 
| topnpropgd.l | ⊢ (𝜑 → 𝐿 ∈ 𝑊) | 
| Ref | Expression | 
|---|---|
| topnpropgd | ⊢ (𝜑 → (TopOpen‘𝐾) = (TopOpen‘𝐿)) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | topnpropd.2 | . . 3 ⊢ (𝜑 → (TopSet‘𝐾) = (TopSet‘𝐿)) | |
| 2 | topnpropd.1 | . . 3 ⊢ (𝜑 → (Base‘𝐾) = (Base‘𝐿)) | |
| 3 | 1, 2 | oveq12d 5940 | . 2 ⊢ (𝜑 → ((TopSet‘𝐾) ↾t (Base‘𝐾)) = ((TopSet‘𝐿) ↾t (Base‘𝐿))) | 
| 4 | topnpropgd.k | . . 3 ⊢ (𝜑 → 𝐾 ∈ 𝑉) | |
| 5 | eqid 2196 | . . . 4 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 6 | eqid 2196 | . . . 4 ⊢ (TopSet‘𝐾) = (TopSet‘𝐾) | |
| 7 | 5, 6 | topnvalg 12922 | . . 3 ⊢ (𝐾 ∈ 𝑉 → ((TopSet‘𝐾) ↾t (Base‘𝐾)) = (TopOpen‘𝐾)) | 
| 8 | 4, 7 | syl 14 | . 2 ⊢ (𝜑 → ((TopSet‘𝐾) ↾t (Base‘𝐾)) = (TopOpen‘𝐾)) | 
| 9 | topnpropgd.l | . . 3 ⊢ (𝜑 → 𝐿 ∈ 𝑊) | |
| 10 | eqid 2196 | . . . 4 ⊢ (Base‘𝐿) = (Base‘𝐿) | |
| 11 | eqid 2196 | . . . 4 ⊢ (TopSet‘𝐿) = (TopSet‘𝐿) | |
| 12 | 10, 11 | topnvalg 12922 | . . 3 ⊢ (𝐿 ∈ 𝑊 → ((TopSet‘𝐿) ↾t (Base‘𝐿)) = (TopOpen‘𝐿)) | 
| 13 | 9, 12 | syl 14 | . 2 ⊢ (𝜑 → ((TopSet‘𝐿) ↾t (Base‘𝐿)) = (TopOpen‘𝐿)) | 
| 14 | 3, 8, 13 | 3eqtr3d 2237 | 1 ⊢ (𝜑 → (TopOpen‘𝐾) = (TopOpen‘𝐿)) | 
| Colors of variables: wff set class | 
| Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2167 ‘cfv 5258 (class class class)co 5922 Basecbs 12678 TopSetcts 12761 ↾t crest 12910 TopOpenctopn 12911 | 
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4148 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-cnex 7970 ax-resscn 7971 ax-1re 7973 ax-addrcl 7976 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-int 3875 df-iun 3918 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-f1 5263 df-fo 5264 df-f1o 5265 df-fv 5266 df-ov 5925 df-oprab 5926 df-mpo 5927 df-1st 6198 df-2nd 6199 df-inn 8991 df-2 9049 df-3 9050 df-4 9051 df-5 9052 df-6 9053 df-7 9054 df-8 9055 df-9 9056 df-ndx 12681 df-slot 12682 df-base 12684 df-tset 12774 df-rest 12912 df-topn 12913 | 
| This theorem is referenced by: sratopng 14003 | 
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