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Mirrors > Home > MPE Home > Th. List > harmonicubnd | Structured version Visualization version GIF version |
Description: A bound on the harmonic series, as compared to the natural logarithm. (Contributed by Mario Carneiro, 13-Apr-2016.) |
Ref | Expression |
---|---|
harmonicubnd | ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) ≤ ((log‘𝐴) + 1)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fzfid 13702 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (1...(⌊‘𝐴)) ∈ Fin) | |
2 | elfznn 13294 | . . . . 5 ⊢ (𝑚 ∈ (1...(⌊‘𝐴)) → 𝑚 ∈ ℕ) | |
3 | 2 | adantl 482 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) ∧ 𝑚 ∈ (1...(⌊‘𝐴))) → 𝑚 ∈ ℕ) |
4 | 3 | nnrecred 12033 | . . 3 ⊢ (((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) ∧ 𝑚 ∈ (1...(⌊‘𝐴))) → (1 / 𝑚) ∈ ℝ) |
5 | 1, 4 | fsumrecl 15455 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) ∈ ℝ) |
6 | flge1nn 13550 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (⌊‘𝐴) ∈ ℕ) | |
7 | 6 | nnrpd 12779 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (⌊‘𝐴) ∈ ℝ+) |
8 | 7 | relogcld 25787 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (log‘(⌊‘𝐴)) ∈ ℝ) |
9 | peano2re 11157 | . . 3 ⊢ ((log‘(⌊‘𝐴)) ∈ ℝ → ((log‘(⌊‘𝐴)) + 1) ∈ ℝ) | |
10 | 8, 9 | syl 17 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → ((log‘(⌊‘𝐴)) + 1) ∈ ℝ) |
11 | simpl 483 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 𝐴 ∈ ℝ) | |
12 | 0red 10987 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 0 ∈ ℝ) | |
13 | 1re 10984 | . . . . . . 7 ⊢ 1 ∈ ℝ | |
14 | 13 | a1i 11 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 1 ∈ ℝ) |
15 | 0lt1 11506 | . . . . . . 7 ⊢ 0 < 1 | |
16 | 15 | a1i 11 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 0 < 1) |
17 | simpr 485 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 1 ≤ 𝐴) | |
18 | 12, 14, 11, 16, 17 | ltletrd 11144 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 0 < 𝐴) |
19 | 11, 18 | elrpd 12778 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → 𝐴 ∈ ℝ+) |
20 | 19 | relogcld 25787 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (log‘𝐴) ∈ ℝ) |
21 | peano2re 11157 | . . 3 ⊢ ((log‘𝐴) ∈ ℝ → ((log‘𝐴) + 1) ∈ ℝ) | |
22 | 20, 21 | syl 17 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → ((log‘𝐴) + 1) ∈ ℝ) |
23 | harmonicbnd 26162 | . . . . 5 ⊢ ((⌊‘𝐴) ∈ ℕ → (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∈ (γ[,]1)) | |
24 | 6, 23 | syl 17 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∈ (γ[,]1)) |
25 | emre 26164 | . . . . . 6 ⊢ γ ∈ ℝ | |
26 | 25, 13 | elicc2i 13154 | . . . . 5 ⊢ ((Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∈ (γ[,]1) ↔ ((Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∈ ℝ ∧ γ ≤ (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∧ (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ≤ 1)) |
27 | 26 | simp3bi 1146 | . . . 4 ⊢ ((Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ∈ (γ[,]1) → (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ≤ 1) |
28 | 24, 27 | syl 17 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ≤ 1) |
29 | 5, 8, 14 | lesubadd2d 11583 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → ((Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) − (log‘(⌊‘𝐴))) ≤ 1 ↔ Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) ≤ ((log‘(⌊‘𝐴)) + 1))) |
30 | 28, 29 | mpbid 231 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) ≤ ((log‘(⌊‘𝐴)) + 1)) |
31 | flle 13528 | . . . . 5 ⊢ (𝐴 ∈ ℝ → (⌊‘𝐴) ≤ 𝐴) | |
32 | 31 | adantr 481 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (⌊‘𝐴) ≤ 𝐴) |
33 | 7, 19 | logled 25791 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → ((⌊‘𝐴) ≤ 𝐴 ↔ (log‘(⌊‘𝐴)) ≤ (log‘𝐴))) |
34 | 32, 33 | mpbid 231 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → (log‘(⌊‘𝐴)) ≤ (log‘𝐴)) |
35 | 8, 20, 14, 34 | leadd1dd 11598 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → ((log‘(⌊‘𝐴)) + 1) ≤ ((log‘𝐴) + 1)) |
36 | 5, 10, 22, 30, 35 | letrd 11141 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 1 ≤ 𝐴) → Σ𝑚 ∈ (1...(⌊‘𝐴))(1 / 𝑚) ≤ ((log‘𝐴) + 1)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∈ wcel 2107 class class class wbr 5075 ‘cfv 6437 (class class class)co 7284 ℝcr 10879 0cc0 10880 1c1 10881 + caddc 10883 < clt 11018 ≤ cle 11019 − cmin 11214 / cdiv 11641 ℕcn 11982 [,]cicc 13091 ...cfz 13248 ⌊cfl 13519 Σcsu 15406 logclog 25719 γcem 26150 |
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 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2710 ax-rep 5210 ax-sep 5224 ax-nul 5231 ax-pow 5289 ax-pr 5353 ax-un 7597 ax-inf2 9408 ax-cnex 10936 ax-resscn 10937 ax-1cn 10938 ax-icn 10939 ax-addcl 10940 ax-addrcl 10941 ax-mulcl 10942 ax-mulrcl 10943 ax-mulcom 10944 ax-addass 10945 ax-mulass 10946 ax-distr 10947 ax-i2m1 10948 ax-1ne0 10949 ax-1rid 10950 ax-rnegex 10951 ax-rrecex 10952 ax-cnre 10953 ax-pre-lttri 10954 ax-pre-lttrn 10955 ax-pre-ltadd 10956 ax-pre-mulgt0 10957 ax-pre-sup 10958 ax-addf 10959 ax-mulf 10960 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rmo 3072 df-reu 3073 df-rab 3074 df-v 3435 df-sbc 3718 df-csb 3834 df-dif 3891 df-un 3893 df-in 3895 df-ss 3905 df-pss 3907 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-tp 4567 df-op 4569 df-uni 4841 df-int 4881 df-iun 4927 df-iin 4928 df-br 5076 df-opab 5138 df-mpt 5159 df-tr 5193 df-id 5490 df-eprel 5496 df-po 5504 df-so 5505 df-fr 5545 df-se 5546 df-we 5547 df-xp 5596 df-rel 5597 df-cnv 5598 df-co 5599 df-dm 5600 df-rn 5601 df-res 5602 df-ima 5603 df-pred 6206 df-ord 6273 df-on 6274 df-lim 6275 df-suc 6276 df-iota 6395 df-fun 6439 df-fn 6440 df-f 6441 df-f1 6442 df-fo 6443 df-f1o 6444 df-fv 6445 df-isom 6446 df-riota 7241 df-ov 7287 df-oprab 7288 df-mpo 7289 df-of 7542 df-om 7722 df-1st 7840 df-2nd 7841 df-supp 7987 df-frecs 8106 df-wrecs 8137 df-recs 8211 df-rdg 8250 df-1o 8306 df-2o 8307 df-er 8507 df-map 8626 df-pm 8627 df-ixp 8695 df-en 8743 df-dom 8744 df-sdom 8745 df-fin 8746 df-fsupp 9138 df-fi 9179 df-sup 9210 df-inf 9211 df-oi 9278 df-card 9706 df-pnf 11020 df-mnf 11021 df-xr 11022 df-ltxr 11023 df-le 11024 df-sub 11216 df-neg 11217 df-div 11642 df-nn 11983 df-2 12045 df-3 12046 df-4 12047 df-5 12048 df-6 12049 df-7 12050 df-8 12051 df-9 12052 df-n0 12243 df-z 12329 df-dec 12447 df-uz 12592 df-q 12698 df-rp 12740 df-xneg 12857 df-xadd 12858 df-xmul 12859 df-ioo 13092 df-ioc 13093 df-ico 13094 df-icc 13095 df-fz 13249 df-fzo 13392 df-fl 13521 df-mod 13599 df-seq 13731 df-exp 13792 df-fac 13997 df-bc 14026 df-hash 14054 df-shft 14787 df-cj 14819 df-re 14820 df-im 14821 df-sqrt 14955 df-abs 14956 df-limsup 15189 df-clim 15206 df-rlim 15207 df-sum 15407 df-ef 15786 df-sin 15788 df-cos 15789 df-pi 15791 df-struct 16857 df-sets 16874 df-slot 16892 df-ndx 16904 df-base 16922 df-ress 16951 df-plusg 16984 df-mulr 16985 df-starv 16986 df-sca 16987 df-vsca 16988 df-ip 16989 df-tset 16990 df-ple 16991 df-ds 16993 df-unif 16994 df-hom 16995 df-cco 16996 df-rest 17142 df-topn 17143 df-0g 17161 df-gsum 17162 df-topgen 17163 df-pt 17164 df-prds 17167 df-xrs 17222 df-qtop 17227 df-imas 17228 df-xps 17230 df-mre 17304 df-mrc 17305 df-acs 17307 df-mgm 18335 df-sgrp 18384 df-mnd 18395 df-submnd 18440 df-mulg 18710 df-cntz 18932 df-cmn 19397 df-psmet 20598 df-xmet 20599 df-met 20600 df-bl 20601 df-mopn 20602 df-fbas 20603 df-fg 20604 df-cnfld 20607 df-top 22052 df-topon 22069 df-topsp 22091 df-bases 22105 df-cld 22179 df-ntr 22180 df-cls 22181 df-nei 22258 df-lp 22296 df-perf 22297 df-cn 22387 df-cnp 22388 df-haus 22475 df-tx 22722 df-hmeo 22915 df-fil 23006 df-fm 23098 df-flim 23099 df-flf 23100 df-xms 23482 df-ms 23483 df-tms 23484 df-cncf 24050 df-limc 25039 df-dv 25040 df-log 25721 df-em 26151 |
This theorem is referenced by: fsumharmonic 26170 logfaclbnd 26379 vmalogdivsum2 26695 logdivbnd 26713 pntrsumo1 26722 pntrlog2bndlem2 26735 pntrlog2bndlem5 26738 pntrlog2bndlem6 26740 |
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