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| Mirrors > Home > MPE Home > Th. List > resstopn | Structured version Visualization version GIF version | ||
| Description: The topology of a restricted structure. (Contributed by Mario Carneiro, 26-Aug-2015.) |
| Ref | Expression |
|---|---|
| resstopn.1 | ⊢ 𝐻 = (𝐾 ↾s 𝐴) |
| resstopn.2 | ⊢ 𝐽 = (TopOpen‘𝐾) |
| Ref | Expression |
|---|---|
| resstopn | ⊢ (𝐽 ↾t 𝐴) = (TopOpen‘𝐻) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvex 6853 | . . . . 5 ⊢ (TopSet‘𝐾) ∈ V | |
| 2 | fvex 6853 | . . . . 5 ⊢ (Base‘𝐾) ∈ V | |
| 3 | restco 23129 | . . . . 5 ⊢ (((TopSet‘𝐾) ∈ V ∧ (Base‘𝐾) ∈ V ∧ 𝐴 ∈ V) → (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = ((TopSet‘𝐾) ↾t ((Base‘𝐾) ∩ 𝐴))) | |
| 4 | 1, 2, 3 | mp3an12 1454 | . . . 4 ⊢ (𝐴 ∈ V → (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = ((TopSet‘𝐾) ↾t ((Base‘𝐾) ∩ 𝐴))) |
| 5 | resstopn.1 | . . . . . 6 ⊢ 𝐻 = (𝐾 ↾s 𝐴) | |
| 6 | eqid 2736 | . . . . . 6 ⊢ (TopSet‘𝐾) = (TopSet‘𝐾) | |
| 7 | 5, 6 | resstset 17328 | . . . . 5 ⊢ (𝐴 ∈ V → (TopSet‘𝐾) = (TopSet‘𝐻)) |
| 8 | incom 4149 | . . . . . 6 ⊢ ((Base‘𝐾) ∩ 𝐴) = (𝐴 ∩ (Base‘𝐾)) | |
| 9 | eqid 2736 | . . . . . . 7 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 10 | 5, 9 | ressbas 17206 | . . . . . 6 ⊢ (𝐴 ∈ V → (𝐴 ∩ (Base‘𝐾)) = (Base‘𝐻)) |
| 11 | 8, 10 | eqtrid 2783 | . . . . 5 ⊢ (𝐴 ∈ V → ((Base‘𝐾) ∩ 𝐴) = (Base‘𝐻)) |
| 12 | 7, 11 | oveq12d 7385 | . . . 4 ⊢ (𝐴 ∈ V → ((TopSet‘𝐾) ↾t ((Base‘𝐾) ∩ 𝐴)) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 13 | 4, 12 | eqtrd 2771 | . . 3 ⊢ (𝐴 ∈ V → (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 14 | 9, 6 | topnval 17397 | . . . . 5 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = (TopOpen‘𝐾) |
| 15 | resstopn.2 | . . . . 5 ⊢ 𝐽 = (TopOpen‘𝐾) | |
| 16 | 14, 15 | eqtr4i 2762 | . . . 4 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = 𝐽 |
| 17 | 16 | oveq1i 7377 | . . 3 ⊢ (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = (𝐽 ↾t 𝐴) |
| 18 | eqid 2736 | . . . 4 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 19 | eqid 2736 | . . . 4 ⊢ (TopSet‘𝐻) = (TopSet‘𝐻) | |
| 20 | 18, 19 | topnval 17397 | . . 3 ⊢ ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (TopOpen‘𝐻) |
| 21 | 13, 17, 20 | 3eqtr3g 2794 | . 2 ⊢ (𝐴 ∈ V → (𝐽 ↾t 𝐴) = (TopOpen‘𝐻)) |
| 22 | simpr 484 | . . . 4 ⊢ ((𝐽 ∈ V ∧ 𝐴 ∈ V) → 𝐴 ∈ V) | |
| 23 | restfn 17387 | . . . . . 6 ⊢ ↾t Fn (V × V) | |
| 24 | 23 | fndmi 6602 | . . . . 5 ⊢ dom ↾t = (V × V) |
| 25 | 24 | ndmov 7551 | . . . 4 ⊢ (¬ (𝐽 ∈ V ∧ 𝐴 ∈ V) → (𝐽 ↾t 𝐴) = ∅) |
| 26 | 22, 25 | nsyl5 159 | . . 3 ⊢ (¬ 𝐴 ∈ V → (𝐽 ↾t 𝐴) = ∅) |
| 27 | reldmress 17202 | . . . . . . . . 9 ⊢ Rel dom ↾s | |
| 28 | 27 | ovprc2 7407 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ V → (𝐾 ↾s 𝐴) = ∅) |
| 29 | 5, 28 | eqtrid 2783 | . . . . . . 7 ⊢ (¬ 𝐴 ∈ V → 𝐻 = ∅) |
| 30 | 29 | fveq2d 6844 | . . . . . 6 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = (TopSet‘∅)) |
| 31 | tsetid 17316 | . . . . . . 7 ⊢ TopSet = Slot (TopSet‘ndx) | |
| 32 | 31 | str0 17159 | . . . . . 6 ⊢ ∅ = (TopSet‘∅) |
| 33 | 30, 32 | eqtr4di 2789 | . . . . 5 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = ∅) |
| 34 | 33 | oveq1d 7382 | . . . 4 ⊢ (¬ 𝐴 ∈ V → ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (∅ ↾t (Base‘𝐻))) |
| 35 | 0rest 17392 | . . . 4 ⊢ (∅ ↾t (Base‘𝐻)) = ∅ | |
| 36 | 34, 20, 35 | 3eqtr3g 2794 | . . 3 ⊢ (¬ 𝐴 ∈ V → (TopOpen‘𝐻) = ∅) |
| 37 | 26, 36 | eqtr4d 2774 | . 2 ⊢ (¬ 𝐴 ∈ V → (𝐽 ↾t 𝐴) = (TopOpen‘𝐻)) |
| 38 | 21, 37 | pm2.61i 182 | 1 ⊢ (𝐽 ↾t 𝐴) = (TopOpen‘𝐻) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3429 ∩ cin 3888 ∅c0 4273 × cxp 5629 ‘cfv 6498 (class class class)co 7367 ndxcnx 17163 Basecbs 17179 ↾s cress 17200 TopSetcts 17226 ↾t crest 17383 TopOpenctopn 17384 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-tset 17239 df-rest 17385 df-topn 17386 |
| This theorem is referenced by: resstps 23152 submtmd 24069 subgtgp 24070 tsmssubm 24108 invrcn2 24145 ressusp 24229 ressxms 24490 ressms 24491 nrgtdrg 24658 tgioo3 24771 dfii4 24851 retopn 25346 rspectopn 34011 xrge0topn 34087 lmxrge0 34096 qqtopn 34155 |
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