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| Mirrors > Home > ILE Home > Th. List > mopntopon | GIF version | ||
| Description: The set of open sets of a metric space 𝑋 is a topology on 𝑋. Remark in [Kreyszig] p. 19. This theorem connects the two concepts and makes available the theorems for topologies for use with metric spaces. (Contributed by Mario Carneiro, 24-Aug-2015.) |
| Ref | Expression |
|---|---|
| mopnval.1 | ⊢ 𝐽 = (MetOpen‘𝐷) |
| Ref | Expression |
|---|---|
| mopntopon | ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ (TopOn‘𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mopnval.1 | . . 3 ⊢ 𝐽 = (MetOpen‘𝐷) | |
| 2 | 1 | mopnval 14856 | . 2 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 = (topGen‘ran (ball‘𝐷))) |
| 3 | blbas 14847 | . . . 4 ⊢ (𝐷 ∈ (∞Met‘𝑋) → ran (ball‘𝐷) ∈ TopBases) | |
| 4 | tgtopon 14480 | . . . 4 ⊢ (ran (ball‘𝐷) ∈ TopBases → (topGen‘ran (ball‘𝐷)) ∈ (TopOn‘∪ ran (ball‘𝐷))) | |
| 5 | 3, 4 | syl 14 | . . 3 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (topGen‘ran (ball‘𝐷)) ∈ (TopOn‘∪ ran (ball‘𝐷))) |
| 6 | unirnbl 14837 | . . . 4 ⊢ (𝐷 ∈ (∞Met‘𝑋) → ∪ ran (ball‘𝐷) = 𝑋) | |
| 7 | 6 | fveq2d 5579 | . . 3 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (TopOn‘∪ ran (ball‘𝐷)) = (TopOn‘𝑋)) |
| 8 | 5, 7 | eleqtrd 2283 | . 2 ⊢ (𝐷 ∈ (∞Met‘𝑋) → (topGen‘ran (ball‘𝐷)) ∈ (TopOn‘𝑋)) |
| 9 | 2, 8 | eqeltrd 2281 | 1 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1372 ∈ wcel 2175 ∪ cuni 3849 ran crn 4675 ‘cfv 5270 topGenctg 13028 ∞Metcxmet 14240 ballcbl 14242 MetOpencmopn 14245 TopOnctopon 14424 TopBasesctb 14456 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-13 2177 ax-14 2178 ax-ext 2186 ax-coll 4158 ax-sep 4161 ax-nul 4169 ax-pow 4217 ax-pr 4252 ax-un 4479 ax-setind 4584 ax-iinf 4635 ax-cnex 8015 ax-resscn 8016 ax-1cn 8017 ax-1re 8018 ax-icn 8019 ax-addcl 8020 ax-addrcl 8021 ax-mulcl 8022 ax-mulrcl 8023 ax-addcom 8024 ax-mulcom 8025 ax-addass 8026 ax-mulass 8027 ax-distr 8028 ax-i2m1 8029 ax-0lt1 8030 ax-1rid 8031 ax-0id 8032 ax-rnegex 8033 ax-precex 8034 ax-cnre 8035 ax-pre-ltirr 8036 ax-pre-ltwlin 8037 ax-pre-lttrn 8038 ax-pre-apti 8039 ax-pre-ltadd 8040 ax-pre-mulgt0 8041 ax-pre-mulext 8042 ax-arch 8043 ax-caucvg 8044 |
| This theorem depends on definitions: df-bi 117 df-stab 832 df-dc 836 df-3or 981 df-3an 982 df-tru 1375 df-fal 1378 df-nf 1483 df-sb 1785 df-eu 2056 df-mo 2057 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-nel 2471 df-ral 2488 df-rex 2489 df-reu 2490 df-rmo 2491 df-rab 2492 df-v 2773 df-sbc 2998 df-csb 3093 df-dif 3167 df-un 3169 df-in 3171 df-ss 3178 df-nul 3460 df-if 3571 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-int 3885 df-iun 3928 df-br 4044 df-opab 4105 df-mpt 4106 df-tr 4142 df-id 4339 df-po 4342 df-iso 4343 df-iord 4412 df-on 4414 df-ilim 4415 df-suc 4417 df-iom 4638 df-xp 4680 df-rel 4681 df-cnv 4682 df-co 4683 df-dm 4684 df-rn 4685 df-res 4686 df-ima 4687 df-iota 5231 df-fun 5272 df-fn 5273 df-f 5274 df-f1 5275 df-fo 5276 df-f1o 5277 df-fv 5278 df-isom 5279 df-riota 5898 df-ov 5946 df-oprab 5947 df-mpo 5948 df-1st 6225 df-2nd 6226 df-recs 6390 df-frec 6476 df-map 6736 df-sup 7085 df-inf 7086 df-pnf 8108 df-mnf 8109 df-xr 8110 df-ltxr 8111 df-le 8112 df-sub 8244 df-neg 8245 df-reap 8647 df-ap 8654 df-div 8745 df-inn 9036 df-2 9094 df-3 9095 df-4 9096 df-n0 9295 df-z 9372 df-uz 9648 df-q 9740 df-rp 9775 df-xneg 9893 df-xadd 9894 df-seqfrec 10591 df-exp 10682 df-cj 11095 df-re 11096 df-im 11097 df-rsqrt 11251 df-abs 11252 df-topgen 13034 df-psmet 14247 df-xmet 14248 df-bl 14250 df-mopn 14251 df-top 14412 df-topon 14425 df-bases 14457 |
| This theorem is referenced by: mopntop 14858 mopnuni 14859 mopnm 14862 mopnss 14864 isxms2 14866 xmettx 14924 metcnp3 14925 metcn 14928 metcnpi 14929 metcnpi2 14930 metcnpi3 14931 txmetcn 14933 cntoptopon 14946 cnfldms 14950 cnfldtopn 14953 |
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