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Mirrors > Home > MPE Home > Th. List > blcntr | Structured version Visualization version GIF version |
Description: A ball contains its center. (Contributed by NM, 2-Sep-2006.) (Revised by Mario Carneiro, 12-Nov-2013.) |
Ref | Expression |
---|---|
blcntr | ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑃 ∈ 𝑋 ∧ 𝑅 ∈ ℝ+) → 𝑃 ∈ (𝑃(ball‘𝐷)𝑅)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rpxr 12739 | . . 3 ⊢ (𝑅 ∈ ℝ+ → 𝑅 ∈ ℝ*) | |
2 | rpgt0 12742 | . . 3 ⊢ (𝑅 ∈ ℝ+ → 0 < 𝑅) | |
3 | 1, 2 | jca 512 | . 2 ⊢ (𝑅 ∈ ℝ+ → (𝑅 ∈ ℝ* ∧ 0 < 𝑅)) |
4 | xblcntr 23564 | . 2 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑃 ∈ 𝑋 ∧ (𝑅 ∈ ℝ* ∧ 0 < 𝑅)) → 𝑃 ∈ (𝑃(ball‘𝐷)𝑅)) | |
5 | 3, 4 | syl3an3 1164 | 1 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑃 ∈ 𝑋 ∧ 𝑅 ∈ ℝ+) → 𝑃 ∈ (𝑃(ball‘𝐷)𝑅)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 ∈ wcel 2106 class class class wbr 5074 ‘cfv 6433 (class class class)co 7275 0cc0 10871 ℝ*cxr 11008 < clt 11009 ℝ+crp 12730 ∞Metcxmet 20582 ballcbl 20584 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 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 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-1st 7831 df-2nd 7832 df-map 8617 df-xr 11013 df-rp 12731 df-psmet 20589 df-xmet 20590 df-bl 20592 |
This theorem is referenced by: bln0 23568 unirnbl 23573 blssex 23580 neibl 23657 blnei 23658 metss 23664 methaus 23676 met1stc 23677 met2ndci 23678 metrest 23680 prdsxmslem2 23685 metcnp3 23696 tgioo 23959 zdis 23979 metnrmlem2 24023 cnllycmp 24119 nmhmcn 24283 lmmbr 24422 cfilfcls 24438 iscmet3lem2 24456 caubl 24472 caublcls 24473 flimcfil 24478 ellimc3 25043 ulmdvlem1 25559 efopn 25813 logtayl 25815 xrlimcnp 26118 efrlim 26119 lgamucov 26187 cnllysconn 33207 poimirlem30 35807 blbnd 35945 heibor1lem 35967 heibor1 35968 binomcxplemnotnn0 41974 hoiqssbl 44163 |
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