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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 6845 | . . . . 5 ⊢ (TopSet‘𝐾) ∈ V | |
| 2 | fvex 6845 | . . . . 5 ⊢ (Base‘𝐾) ∈ V | |
| 3 | restco 23107 | . . . . 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 2737 | . . . . . 6 ⊢ (TopSet‘𝐾) = (TopSet‘𝐾) | |
| 7 | 5, 6 | resstset 17286 | . . . . 5 ⊢ (𝐴 ∈ V → (TopSet‘𝐾) = (TopSet‘𝐻)) |
| 8 | incom 4150 | . . . . . 6 ⊢ ((Base‘𝐾) ∩ 𝐴) = (𝐴 ∩ (Base‘𝐾)) | |
| 9 | eqid 2737 | . . . . . . 7 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 10 | 5, 9 | ressbas 17164 | . . . . . 6 ⊢ (𝐴 ∈ V → (𝐴 ∩ (Base‘𝐾)) = (Base‘𝐻)) |
| 11 | 8, 10 | eqtrid 2784 | . . . . 5 ⊢ (𝐴 ∈ V → ((Base‘𝐾) ∩ 𝐴) = (Base‘𝐻)) |
| 12 | 7, 11 | oveq12d 7376 | . . . 4 ⊢ (𝐴 ∈ V → ((TopSet‘𝐾) ↾t ((Base‘𝐾) ∩ 𝐴)) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 13 | 4, 12 | eqtrd 2772 | . . 3 ⊢ (𝐴 ∈ V → (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 14 | 9, 6 | topnval 17355 | . . . . 5 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = (TopOpen‘𝐾) |
| 15 | resstopn.2 | . . . . 5 ⊢ 𝐽 = (TopOpen‘𝐾) | |
| 16 | 14, 15 | eqtr4i 2763 | . . . 4 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = 𝐽 |
| 17 | 16 | oveq1i 7368 | . . 3 ⊢ (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = (𝐽 ↾t 𝐴) |
| 18 | eqid 2737 | . . . 4 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 19 | eqid 2737 | . . . 4 ⊢ (TopSet‘𝐻) = (TopSet‘𝐻) | |
| 20 | 18, 19 | topnval 17355 | . . 3 ⊢ ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (TopOpen‘𝐻) |
| 21 | 13, 17, 20 | 3eqtr3g 2795 | . 2 ⊢ (𝐴 ∈ V → (𝐽 ↾t 𝐴) = (TopOpen‘𝐻)) |
| 22 | simpr 484 | . . . 4 ⊢ ((𝐽 ∈ V ∧ 𝐴 ∈ V) → 𝐴 ∈ V) | |
| 23 | restfn 17345 | . . . . . 6 ⊢ ↾t Fn (V × V) | |
| 24 | 23 | fndmi 6594 | . . . . 5 ⊢ dom ↾t = (V × V) |
| 25 | 24 | ndmov 7542 | . . . 4 ⊢ (¬ (𝐽 ∈ V ∧ 𝐴 ∈ V) → (𝐽 ↾t 𝐴) = ∅) |
| 26 | 22, 25 | nsyl5 159 | . . 3 ⊢ (¬ 𝐴 ∈ V → (𝐽 ↾t 𝐴) = ∅) |
| 27 | reldmress 17160 | . . . . . . . . 9 ⊢ Rel dom ↾s | |
| 28 | 27 | ovprc2 7398 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ V → (𝐾 ↾s 𝐴) = ∅) |
| 29 | 5, 28 | eqtrid 2784 | . . . . . . 7 ⊢ (¬ 𝐴 ∈ V → 𝐻 = ∅) |
| 30 | 29 | fveq2d 6836 | . . . . . 6 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = (TopSet‘∅)) |
| 31 | tsetid 17274 | . . . . . . 7 ⊢ TopSet = Slot (TopSet‘ndx) | |
| 32 | 31 | str0 17117 | . . . . . 6 ⊢ ∅ = (TopSet‘∅) |
| 33 | 30, 32 | eqtr4di 2790 | . . . . 5 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = ∅) |
| 34 | 33 | oveq1d 7373 | . . . 4 ⊢ (¬ 𝐴 ∈ V → ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (∅ ↾t (Base‘𝐻))) |
| 35 | 0rest 17350 | . . . 4 ⊢ (∅ ↾t (Base‘𝐻)) = ∅ | |
| 36 | 34, 20, 35 | 3eqtr3g 2795 | . . 3 ⊢ (¬ 𝐴 ∈ V → (TopOpen‘𝐻) = ∅) |
| 37 | 26, 36 | eqtr4d 2775 | . 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 3430 ∩ cin 3889 ∅c0 4274 × cxp 5620 ‘cfv 6490 (class class class)co 7358 ndxcnx 17121 Basecbs 17137 ↾s cress 17158 TopSetcts 17184 ↾t crest 17341 TopOpenctopn 17342 |
| 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 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 |
| 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-rdg 8340 df-er 8634 df-en 8885 df-dom 8886 df-sdom 8887 df-pnf 11169 df-mnf 11170 df-xr 11171 df-ltxr 11172 df-le 11173 df-sub 11367 df-neg 11368 df-nn 12147 df-2 12209 df-3 12210 df-4 12211 df-5 12212 df-6 12213 df-7 12214 df-8 12215 df-9 12216 df-sets 17092 df-slot 17110 df-ndx 17122 df-base 17138 df-ress 17159 df-tset 17197 df-rest 17343 df-topn 17344 |
| This theorem is referenced by: resstps 23130 submtmd 24047 subgtgp 24048 tsmssubm 24086 invrcn2 24123 ressusp 24207 ressxms 24468 ressms 24469 nrgtdrg 24636 tgioo3 24749 dfii4 24829 retopn 25324 rspectopn 34017 xrge0topn 34093 lmxrge0 34102 qqtopn 34161 |
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