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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 6874 | . . . . 5 ⊢ (TopSet‘𝐾) ∈ V | |
| 2 | fvex 6874 | . . . . 5 ⊢ (Base‘𝐾) ∈ V | |
| 3 | restco 23058 | . . . . 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 1453 | . . . 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 2730 | . . . . . 6 ⊢ (TopSet‘𝐾) = (TopSet‘𝐾) | |
| 7 | 5, 6 | resstset 17335 | . . . . 5 ⊢ (𝐴 ∈ V → (TopSet‘𝐾) = (TopSet‘𝐻)) |
| 8 | incom 4175 | . . . . . 6 ⊢ ((Base‘𝐾) ∩ 𝐴) = (𝐴 ∩ (Base‘𝐾)) | |
| 9 | eqid 2730 | . . . . . . 7 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 10 | 5, 9 | ressbas 17213 | . . . . . 6 ⊢ (𝐴 ∈ V → (𝐴 ∩ (Base‘𝐾)) = (Base‘𝐻)) |
| 11 | 8, 10 | eqtrid 2777 | . . . . 5 ⊢ (𝐴 ∈ V → ((Base‘𝐾) ∩ 𝐴) = (Base‘𝐻)) |
| 12 | 7, 11 | oveq12d 7408 | . . . 4 ⊢ (𝐴 ∈ V → ((TopSet‘𝐾) ↾t ((Base‘𝐾) ∩ 𝐴)) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 13 | 4, 12 | eqtrd 2765 | . . 3 ⊢ (𝐴 ∈ V → (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = ((TopSet‘𝐻) ↾t (Base‘𝐻))) |
| 14 | 9, 6 | topnval 17404 | . . . . 5 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = (TopOpen‘𝐾) |
| 15 | resstopn.2 | . . . . 5 ⊢ 𝐽 = (TopOpen‘𝐾) | |
| 16 | 14, 15 | eqtr4i 2756 | . . . 4 ⊢ ((TopSet‘𝐾) ↾t (Base‘𝐾)) = 𝐽 |
| 17 | 16 | oveq1i 7400 | . . 3 ⊢ (((TopSet‘𝐾) ↾t (Base‘𝐾)) ↾t 𝐴) = (𝐽 ↾t 𝐴) |
| 18 | eqid 2730 | . . . 4 ⊢ (Base‘𝐻) = (Base‘𝐻) | |
| 19 | eqid 2730 | . . . 4 ⊢ (TopSet‘𝐻) = (TopSet‘𝐻) | |
| 20 | 18, 19 | topnval 17404 | . . 3 ⊢ ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (TopOpen‘𝐻) |
| 21 | 13, 17, 20 | 3eqtr3g 2788 | . 2 ⊢ (𝐴 ∈ V → (𝐽 ↾t 𝐴) = (TopOpen‘𝐻)) |
| 22 | simpr 484 | . . . 4 ⊢ ((𝐽 ∈ V ∧ 𝐴 ∈ V) → 𝐴 ∈ V) | |
| 23 | restfn 17394 | . . . . . 6 ⊢ ↾t Fn (V × V) | |
| 24 | 23 | fndmi 6625 | . . . . 5 ⊢ dom ↾t = (V × V) |
| 25 | 24 | ndmov 7576 | . . . 4 ⊢ (¬ (𝐽 ∈ V ∧ 𝐴 ∈ V) → (𝐽 ↾t 𝐴) = ∅) |
| 26 | 22, 25 | nsyl5 159 | . . 3 ⊢ (¬ 𝐴 ∈ V → (𝐽 ↾t 𝐴) = ∅) |
| 27 | reldmress 17209 | . . . . . . . . 9 ⊢ Rel dom ↾s | |
| 28 | 27 | ovprc2 7430 | . . . . . . . 8 ⊢ (¬ 𝐴 ∈ V → (𝐾 ↾s 𝐴) = ∅) |
| 29 | 5, 28 | eqtrid 2777 | . . . . . . 7 ⊢ (¬ 𝐴 ∈ V → 𝐻 = ∅) |
| 30 | 29 | fveq2d 6865 | . . . . . 6 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = (TopSet‘∅)) |
| 31 | tsetid 17323 | . . . . . . 7 ⊢ TopSet = Slot (TopSet‘ndx) | |
| 32 | 31 | str0 17166 | . . . . . 6 ⊢ ∅ = (TopSet‘∅) |
| 33 | 30, 32 | eqtr4di 2783 | . . . . 5 ⊢ (¬ 𝐴 ∈ V → (TopSet‘𝐻) = ∅) |
| 34 | 33 | oveq1d 7405 | . . . 4 ⊢ (¬ 𝐴 ∈ V → ((TopSet‘𝐻) ↾t (Base‘𝐻)) = (∅ ↾t (Base‘𝐻))) |
| 35 | 0rest 17399 | . . . 4 ⊢ (∅ ↾t (Base‘𝐻)) = ∅ | |
| 36 | 34, 20, 35 | 3eqtr3g 2788 | . . 3 ⊢ (¬ 𝐴 ∈ V → (TopOpen‘𝐻) = ∅) |
| 37 | 26, 36 | eqtr4d 2768 | . 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 1540 ∈ wcel 2109 Vcvv 3450 ∩ cin 3916 ∅c0 4299 × cxp 5639 ‘cfv 6514 (class class class)co 7390 ndxcnx 17170 Basecbs 17186 ↾s cress 17207 TopSetcts 17233 ↾t crest 17390 TopOpenctopn 17391 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-5 12259 df-6 12260 df-7 12261 df-8 12262 df-9 12263 df-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-ress 17208 df-tset 17246 df-rest 17392 df-topn 17393 |
| This theorem is referenced by: resstps 23081 submtmd 23998 subgtgp 23999 tsmssubm 24037 invrcn2 24074 ressusp 24159 ressxms 24420 ressms 24421 nrgtdrg 24588 tgioo3 24701 dfii4 24784 retopn 25286 rspectopn 33864 xrge0topn 33940 lmxrge0 33949 qqtopn 34008 |
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