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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 13041 | . . 3 ⊢ (𝑅 ∈ ℝ+ → 𝑅 ∈ ℝ*) | |
2 | rpgt0 13044 | . . 3 ⊢ (𝑅 ∈ ℝ+ → 0 < 𝑅) | |
3 | 1, 2 | jca 511 | . 2 ⊢ (𝑅 ∈ ℝ+ → (𝑅 ∈ ℝ* ∧ 0 < 𝑅)) |
4 | xblcntr 24436 | . 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 395 ∧ w3a 1086 ∈ wcel 2105 class class class wbr 5147 ‘cfv 6562 (class class class)co 7430 0cc0 11152 ℝ*cxr 11291 < clt 11292 ℝ+crp 13031 ∞Metcxmet 21366 ballcbl 21368 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1791 ax-4 1805 ax-5 1907 ax-6 1964 ax-7 2004 ax-8 2107 ax-9 2115 ax-10 2138 ax-11 2154 ax-12 2174 ax-ext 2705 ax-sep 5301 ax-nul 5311 ax-pow 5370 ax-pr 5437 ax-un 7753 ax-cnex 11208 ax-resscn 11209 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1539 df-fal 1549 df-ex 1776 df-nf 1780 df-sb 2062 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2726 df-clel 2813 df-nfc 2889 df-ne 2938 df-ral 3059 df-rex 3068 df-rab 3433 df-v 3479 df-sbc 3791 df-csb 3908 df-dif 3965 df-un 3967 df-in 3969 df-ss 3979 df-nul 4339 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4912 df-iun 4997 df-br 5148 df-opab 5210 df-mpt 5231 df-id 5582 df-xp 5694 df-rel 5695 df-cnv 5696 df-co 5697 df-dm 5698 df-rn 5699 df-res 5700 df-ima 5701 df-iota 6515 df-fun 6564 df-fn 6565 df-f 6566 df-fv 6570 df-ov 7433 df-oprab 7434 df-mpo 7435 df-1st 8012 df-2nd 8013 df-map 8866 df-xr 11296 df-rp 13032 df-psmet 21373 df-xmet 21374 df-bl 21376 |
This theorem is referenced by: bln0 24440 unirnbl 24445 blssex 24452 neibl 24529 blnei 24530 metss 24536 methaus 24548 met1stc 24549 met2ndci 24550 metrest 24552 prdsxmslem2 24557 metcnp3 24568 tgioo 24831 zdis 24851 metnrmlem2 24895 cnllycmp 25001 nmhmcn 25166 lmmbr 25305 cfilfcls 25321 iscmet3lem2 25339 caubl 25355 caublcls 25356 flimcfil 25361 ellimc3 25928 ulmdvlem1 26457 efopn 26714 logtayl 26716 xrlimcnp 27025 efrlim 27026 efrlimOLD 27027 lgamucov 27095 cnllysconn 35229 poimirlem30 37636 blbnd 37773 heibor1lem 37795 heibor1 37796 binomcxplemnotnn0 44351 hoiqssbl 46580 |
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