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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 21524 | . . . 4 ⊢ 𝐵 = ∪ 𝐴 |
3 | 2 | restid 16707 | . . 3 ⊢ (𝐴 ∈ (TopOn‘𝐵) → (𝐴 ↾t 𝐵) = 𝐴) |
4 | 1, 3 | ax-mp 5 | . 2 ⊢ (𝐴 ↾t 𝐵) = 𝐴 |
5 | 4 | eqcomi 2830 | 1 ⊢ 𝐴 = (𝐴 ↾t 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 ‘cfv 6355 (class class class)co 7156 ↾t crest 16694 TopOnctopon 21518 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5190 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-ov 7159 df-oprab 7160 df-mpo 7161 df-rest 16696 df-topon 21519 |
This theorem is referenced by: cncfcn1 23518 cncfmpt2f 23522 cdivcncf 23525 cnrehmeo 23557 cnlimc 24486 dvidlem 24513 dvcnp2 24517 dvcn 24518 dvnres 24528 dvaddbr 24535 dvmulbr 24536 dvcobr 24543 dvcjbr 24546 dvrec 24552 dvexp3 24575 dveflem 24576 dvlipcn 24591 lhop1lem 24610 ftc1cn 24640 dvply1 24873 dvtaylp 24958 taylthlem2 24962 psercn 25014 pserdvlem2 25016 pserdv 25017 abelth 25029 logcn 25230 dvloglem 25231 dvlog 25234 dvlog2 25236 efopnlem2 25240 logtayl 25243 cxpcn 25326 cxpcn2 25327 cxpcn3 25329 resqrtcn 25330 sqrtcn 25331 dvatan 25513 ftalem3 25652 cxpcncf1 31866 knoppcnlem10 33841 knoppcnlem11 33842 dvtan 34957 ftc1cnnc 34981 dvasin 34993 dvacos 34994 cxpcncf2 42232 |
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