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Mirrors > Home > MPE Home > Th. List > Mathboxes > heiborlem7 | Structured version Visualization version GIF version |
Description: Lemma for heibor 35259. Since the sizes of the balls decrease exponentially, the sequence converges to zero. (Contributed by Jeff Madsen, 23-Jan-2014.) |
Ref | Expression |
---|---|
heibor.1 | ⊢ 𝐽 = (MetOpen‘𝐷) |
heibor.3 | ⊢ 𝐾 = {𝑢 ∣ ¬ ∃𝑣 ∈ (𝒫 𝑈 ∩ Fin)𝑢 ⊆ ∪ 𝑣} |
heibor.4 | ⊢ 𝐺 = {〈𝑦, 𝑛〉 ∣ (𝑛 ∈ ℕ0 ∧ 𝑦 ∈ (𝐹‘𝑛) ∧ (𝑦𝐵𝑛) ∈ 𝐾)} |
heibor.5 | ⊢ 𝐵 = (𝑧 ∈ 𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚)))) |
heibor.6 | ⊢ (𝜑 → 𝐷 ∈ (CMet‘𝑋)) |
heibor.7 | ⊢ (𝜑 → 𝐹:ℕ0⟶(𝒫 𝑋 ∩ Fin)) |
heibor.8 | ⊢ (𝜑 → ∀𝑛 ∈ ℕ0 𝑋 = ∪ 𝑦 ∈ (𝐹‘𝑛)(𝑦𝐵𝑛)) |
heibor.9 | ⊢ (𝜑 → ∀𝑥 ∈ 𝐺 ((𝑇‘𝑥)𝐺((2nd ‘𝑥) + 1) ∧ ((𝐵‘𝑥) ∩ ((𝑇‘𝑥)𝐵((2nd ‘𝑥) + 1))) ∈ 𝐾)) |
heibor.10 | ⊢ (𝜑 → 𝐶𝐺0) |
heibor.11 | ⊢ 𝑆 = seq0(𝑇, (𝑚 ∈ ℕ0 ↦ if(𝑚 = 0, 𝐶, (𝑚 − 1)))) |
heibor.12 | ⊢ 𝑀 = (𝑛 ∈ ℕ ↦ 〈(𝑆‘𝑛), (3 / (2↑𝑛))〉) |
Ref | Expression |
---|---|
heiborlem7 | ⊢ ∀𝑟 ∈ ℝ+ ∃𝑘 ∈ ℕ (2nd ‘(𝑀‘𝑘)) < 𝑟 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3re 11705 | . . . . . . 7 ⊢ 3 ∈ ℝ | |
2 | 3pos 11730 | . . . . . . 7 ⊢ 0 < 3 | |
3 | 1, 2 | elrpii 12380 | . . . . . 6 ⊢ 3 ∈ ℝ+ |
4 | rpdivcl 12402 | . . . . . 6 ⊢ ((𝑟 ∈ ℝ+ ∧ 3 ∈ ℝ+) → (𝑟 / 3) ∈ ℝ+) | |
5 | 3, 4 | mpan2 690 | . . . . 5 ⊢ (𝑟 ∈ ℝ+ → (𝑟 / 3) ∈ ℝ+) |
6 | 2re 11699 | . . . . . 6 ⊢ 2 ∈ ℝ | |
7 | 1lt2 11796 | . . . . . 6 ⊢ 1 < 2 | |
8 | expnlbnd 13590 | . . . . . 6 ⊢ (((𝑟 / 3) ∈ ℝ+ ∧ 2 ∈ ℝ ∧ 1 < 2) → ∃𝑘 ∈ ℕ (1 / (2↑𝑘)) < (𝑟 / 3)) | |
9 | 6, 7, 8 | mp3an23 1450 | . . . . 5 ⊢ ((𝑟 / 3) ∈ ℝ+ → ∃𝑘 ∈ ℕ (1 / (2↑𝑘)) < (𝑟 / 3)) |
10 | 5, 9 | syl 17 | . . . 4 ⊢ (𝑟 ∈ ℝ+ → ∃𝑘 ∈ ℕ (1 / (2↑𝑘)) < (𝑟 / 3)) |
11 | 2nn 11698 | . . . . . . . . . . 11 ⊢ 2 ∈ ℕ | |
12 | nnnn0 11892 | . . . . . . . . . . 11 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℕ0) | |
13 | nnexpcl 13438 | . . . . . . . . . . 11 ⊢ ((2 ∈ ℕ ∧ 𝑘 ∈ ℕ0) → (2↑𝑘) ∈ ℕ) | |
14 | 11, 12, 13 | sylancr 590 | . . . . . . . . . 10 ⊢ (𝑘 ∈ ℕ → (2↑𝑘) ∈ ℕ) |
15 | 14 | nnrpd 12417 | . . . . . . . . 9 ⊢ (𝑘 ∈ ℕ → (2↑𝑘) ∈ ℝ+) |
16 | rpcn 12387 | . . . . . . . . . 10 ⊢ ((2↑𝑘) ∈ ℝ+ → (2↑𝑘) ∈ ℂ) | |
17 | rpne0 12393 | . . . . . . . . . 10 ⊢ ((2↑𝑘) ∈ ℝ+ → (2↑𝑘) ≠ 0) | |
18 | 3cn 11706 | . . . . . . . . . . 11 ⊢ 3 ∈ ℂ | |
19 | divrec 11303 | . . . . . . . . . . 11 ⊢ ((3 ∈ ℂ ∧ (2↑𝑘) ∈ ℂ ∧ (2↑𝑘) ≠ 0) → (3 / (2↑𝑘)) = (3 · (1 / (2↑𝑘)))) | |
20 | 18, 19 | mp3an1 1445 | . . . . . . . . . 10 ⊢ (((2↑𝑘) ∈ ℂ ∧ (2↑𝑘) ≠ 0) → (3 / (2↑𝑘)) = (3 · (1 / (2↑𝑘)))) |
21 | 16, 17, 20 | syl2anc 587 | . . . . . . . . 9 ⊢ ((2↑𝑘) ∈ ℝ+ → (3 / (2↑𝑘)) = (3 · (1 / (2↑𝑘)))) |
22 | 15, 21 | syl 17 | . . . . . . . 8 ⊢ (𝑘 ∈ ℕ → (3 / (2↑𝑘)) = (3 · (1 / (2↑𝑘)))) |
23 | 22 | adantl 485 | . . . . . . 7 ⊢ ((𝑟 ∈ ℝ+ ∧ 𝑘 ∈ ℕ) → (3 / (2↑𝑘)) = (3 · (1 / (2↑𝑘)))) |
24 | 23 | breq1d 5040 | . . . . . 6 ⊢ ((𝑟 ∈ ℝ+ ∧ 𝑘 ∈ ℕ) → ((3 / (2↑𝑘)) < 𝑟 ↔ (3 · (1 / (2↑𝑘))) < 𝑟)) |
25 | 14 | nnrecred 11676 | . . . . . . 7 ⊢ (𝑘 ∈ ℕ → (1 / (2↑𝑘)) ∈ ℝ) |
26 | rpre 12385 | . . . . . . 7 ⊢ (𝑟 ∈ ℝ+ → 𝑟 ∈ ℝ) | |
27 | 1, 2 | pm3.2i 474 | . . . . . . . 8 ⊢ (3 ∈ ℝ ∧ 0 < 3) |
28 | ltmuldiv2 11503 | . . . . . . . 8 ⊢ (((1 / (2↑𝑘)) ∈ ℝ ∧ 𝑟 ∈ ℝ ∧ (3 ∈ ℝ ∧ 0 < 3)) → ((3 · (1 / (2↑𝑘))) < 𝑟 ↔ (1 / (2↑𝑘)) < (𝑟 / 3))) | |
29 | 27, 28 | mp3an3 1447 | . . . . . . 7 ⊢ (((1 / (2↑𝑘)) ∈ ℝ ∧ 𝑟 ∈ ℝ) → ((3 · (1 / (2↑𝑘))) < 𝑟 ↔ (1 / (2↑𝑘)) < (𝑟 / 3))) |
30 | 25, 26, 29 | syl2anr 599 | . . . . . 6 ⊢ ((𝑟 ∈ ℝ+ ∧ 𝑘 ∈ ℕ) → ((3 · (1 / (2↑𝑘))) < 𝑟 ↔ (1 / (2↑𝑘)) < (𝑟 / 3))) |
31 | 24, 30 | bitrd 282 | . . . . 5 ⊢ ((𝑟 ∈ ℝ+ ∧ 𝑘 ∈ ℕ) → ((3 / (2↑𝑘)) < 𝑟 ↔ (1 / (2↑𝑘)) < (𝑟 / 3))) |
32 | 31 | rexbidva 3255 | . . . 4 ⊢ (𝑟 ∈ ℝ+ → (∃𝑘 ∈ ℕ (3 / (2↑𝑘)) < 𝑟 ↔ ∃𝑘 ∈ ℕ (1 / (2↑𝑘)) < (𝑟 / 3))) |
33 | 10, 32 | mpbird 260 | . . 3 ⊢ (𝑟 ∈ ℝ+ → ∃𝑘 ∈ ℕ (3 / (2↑𝑘)) < 𝑟) |
34 | fveq2 6645 | . . . . . . . . 9 ⊢ (𝑛 = 𝑘 → (𝑆‘𝑛) = (𝑆‘𝑘)) | |
35 | oveq2 7143 | . . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (2↑𝑛) = (2↑𝑘)) | |
36 | 35 | oveq2d 7151 | . . . . . . . . 9 ⊢ (𝑛 = 𝑘 → (3 / (2↑𝑛)) = (3 / (2↑𝑘))) |
37 | 34, 36 | opeq12d 4773 | . . . . . . . 8 ⊢ (𝑛 = 𝑘 → 〈(𝑆‘𝑛), (3 / (2↑𝑛))〉 = 〈(𝑆‘𝑘), (3 / (2↑𝑘))〉) |
38 | heibor.12 | . . . . . . . 8 ⊢ 𝑀 = (𝑛 ∈ ℕ ↦ 〈(𝑆‘𝑛), (3 / (2↑𝑛))〉) | |
39 | opex 5321 | . . . . . . . 8 ⊢ 〈(𝑆‘𝑘), (3 / (2↑𝑘))〉 ∈ V | |
40 | 37, 38, 39 | fvmpt 6745 | . . . . . . 7 ⊢ (𝑘 ∈ ℕ → (𝑀‘𝑘) = 〈(𝑆‘𝑘), (3 / (2↑𝑘))〉) |
41 | 40 | fveq2d 6649 | . . . . . 6 ⊢ (𝑘 ∈ ℕ → (2nd ‘(𝑀‘𝑘)) = (2nd ‘〈(𝑆‘𝑘), (3 / (2↑𝑘))〉)) |
42 | fvex 6658 | . . . . . . 7 ⊢ (𝑆‘𝑘) ∈ V | |
43 | ovex 7168 | . . . . . . 7 ⊢ (3 / (2↑𝑘)) ∈ V | |
44 | 42, 43 | op2nd 7680 | . . . . . 6 ⊢ (2nd ‘〈(𝑆‘𝑘), (3 / (2↑𝑘))〉) = (3 / (2↑𝑘)) |
45 | 41, 44 | eqtrdi 2849 | . . . . 5 ⊢ (𝑘 ∈ ℕ → (2nd ‘(𝑀‘𝑘)) = (3 / (2↑𝑘))) |
46 | 45 | breq1d 5040 | . . . 4 ⊢ (𝑘 ∈ ℕ → ((2nd ‘(𝑀‘𝑘)) < 𝑟 ↔ (3 / (2↑𝑘)) < 𝑟)) |
47 | 46 | rexbiia 3209 | . . 3 ⊢ (∃𝑘 ∈ ℕ (2nd ‘(𝑀‘𝑘)) < 𝑟 ↔ ∃𝑘 ∈ ℕ (3 / (2↑𝑘)) < 𝑟) |
48 | 33, 47 | sylibr 237 | . 2 ⊢ (𝑟 ∈ ℝ+ → ∃𝑘 ∈ ℕ (2nd ‘(𝑀‘𝑘)) < 𝑟) |
49 | 48 | rgen 3116 | 1 ⊢ ∀𝑟 ∈ ℝ+ ∃𝑘 ∈ ℕ (2nd ‘(𝑀‘𝑘)) < 𝑟 |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 {cab 2776 ≠ wne 2987 ∀wral 3106 ∃wrex 3107 ∩ cin 3880 ⊆ wss 3881 ifcif 4425 𝒫 cpw 4497 〈cop 4531 ∪ cuni 4800 ∪ ciun 4881 class class class wbr 5030 {copab 5092 ↦ cmpt 5110 ⟶wf 6320 ‘cfv 6324 (class class class)co 7135 ∈ cmpo 7137 2nd c2nd 7670 Fincfn 8492 ℂcc 10524 ℝcr 10525 0cc0 10526 1c1 10527 + caddc 10529 · cmul 10531 < clt 10664 − cmin 10859 / cdiv 11286 ℕcn 11625 2c2 11680 3c3 11681 ℕ0cn0 11885 ℝ+crp 12377 seqcseq 13364 ↑cexp 13425 ballcbl 20078 MetOpencmopn 20081 CMetccmet 23858 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-pre-sup 10604 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-sup 8890 df-inf 8891 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-3 11689 df-n0 11886 df-z 11970 df-uz 12232 df-rp 12378 df-fl 13157 df-seq 13365 df-exp 13426 |
This theorem is referenced by: heiborlem8 35256 heiborlem9 35257 |
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