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Mirrors > Home > MPE Home > Th. List > toponrestid | Structured version Visualization version GIF version |
Description: Given a topology on a set, restricting it to that same set has no effect. (Contributed by Jim Kingdon, 6-Jul-2022.) |
Ref | Expression |
---|---|
toponrestid.t | ⊢ 𝐴 ∈ (TopOn‘𝐵) |
Ref | Expression |
---|---|
toponrestid | ⊢ 𝐴 = (𝐴 ↾t 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | toponrestid.t | . . 3 ⊢ 𝐴 ∈ (TopOn‘𝐵) | |
2 | 1 | toponunii 22249 | . . . 4 ⊢ 𝐵 = ∪ 𝐴 |
3 | 2 | restid 17307 | . . 3 ⊢ (𝐴 ∈ (TopOn‘𝐵) → (𝐴 ↾t 𝐵) = 𝐴) |
4 | 1, 3 | ax-mp 5 | . 2 ⊢ (𝐴 ↾t 𝐵) = 𝐴 |
5 | 4 | eqcomi 2745 | 1 ⊢ 𝐴 = (𝐴 ↾t 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1541 ∈ wcel 2106 ‘cfv 6493 (class class class)co 7353 ↾t crest 17294 TopOnctopon 22243 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-rep 5240 ax-sep 5254 ax-nul 5261 ax-pow 5318 ax-pr 5382 ax-un 7668 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-reu 3352 df-rab 3406 df-v 3445 df-sbc 3738 df-csb 3854 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4281 df-if 4485 df-pw 4560 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4864 df-iun 4954 df-br 5104 df-opab 5166 df-mpt 5187 df-id 5529 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-iota 6445 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-ov 7356 df-oprab 7357 df-mpo 7358 df-rest 17296 df-topon 22244 |
This theorem is referenced by: cncfcn1 24258 cncfmpt2f 24262 cdivcncf 24268 cnrehmeo 24300 cnlimc 25236 dvidlem 25263 dvcnp2 25268 dvcn 25269 dvnres 25279 dvaddbr 25286 dvmulbr 25287 dvcobr 25294 dvcjbr 25297 dvrec 25303 dvexp3 25326 dveflem 25327 dvlipcn 25342 lhop1lem 25361 ftc1cn 25391 dvply1 25628 dvtaylp 25713 taylthlem2 25717 psercn 25769 pserdvlem2 25771 pserdv 25772 abelth 25784 logcn 25986 dvloglem 25987 dvlog 25990 dvlog2 25992 efopnlem2 25996 logtayl 25999 cxpcn 26082 cxpcn2 26083 cxpcn3 26085 resqrtcn 26086 sqrtcn 26087 dvatan 26269 ftalem3 26408 cxpcncf1 33077 knoppcnlem10 34932 knoppcnlem11 34933 dvtan 36095 ftc1cnnc 36117 dvasin 36129 dvacos 36130 cxpcncf2 44072 |
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