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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 21526 | . . . 4 ⊢ 𝐵 = ∪ 𝐴 |
3 | 2 | restid 16709 | . . 3 ⊢ (𝐴 ∈ (TopOn‘𝐵) → (𝐴 ↾t 𝐵) = 𝐴) |
4 | 1, 3 | ax-mp 5 | . 2 ⊢ (𝐴 ↾t 𝐵) = 𝐴 |
5 | 4 | eqcomi 2832 | 1 ⊢ 𝐴 = (𝐴 ↾t 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 ‘cfv 6357 (class class class)co 7158 ↾t crest 16696 TopOnctopon 21520 |
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 2795 ax-rep 5192 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 |
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 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-ov 7161 df-oprab 7162 df-mpo 7163 df-rest 16698 df-topon 21521 |
This theorem is referenced by: cncfcn1 23520 cncfmpt2f 23524 cdivcncf 23527 cnrehmeo 23559 cnlimc 24488 dvidlem 24515 dvcnp2 24519 dvcn 24520 dvnres 24530 dvaddbr 24537 dvmulbr 24538 dvcobr 24545 dvcjbr 24548 dvrec 24554 dvexp3 24577 dveflem 24578 dvlipcn 24593 lhop1lem 24612 ftc1cn 24642 dvply1 24875 dvtaylp 24960 taylthlem2 24964 psercn 25016 pserdvlem2 25018 pserdv 25019 abelth 25031 logcn 25232 dvloglem 25233 dvlog 25236 dvlog2 25238 efopnlem2 25242 logtayl 25245 cxpcn 25328 cxpcn2 25329 cxpcn3 25331 resqrtcn 25332 sqrtcn 25333 dvatan 25515 ftalem3 25654 cxpcncf1 31868 knoppcnlem10 33843 knoppcnlem11 33844 dvtan 34944 ftc1cnnc 34968 dvasin 34980 dvacos 34981 cxpcncf2 42190 |
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