Mathbox for Stanislas Polu |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > amgm3d | Structured version Visualization version GIF version |
Description: Arithmetic-geometric mean inequality for 𝑛 = 3. (Contributed by Stanislas Polu, 11-Sep-2020.) |
Ref | Expression |
---|---|
amgm3d.0 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
amgm3d.1 | ⊢ (𝜑 → 𝐵 ∈ ℝ+) |
amgm3d.2 | ⊢ (𝜑 → 𝐶 ∈ ℝ+) |
Ref | Expression |
---|---|
amgm3d | ⊢ (𝜑 → ((𝐴 · (𝐵 · 𝐶))↑𝑐(1 / 3)) ≤ ((𝐴 + (𝐵 + 𝐶)) / 3)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2758 | . . 3 ⊢ (mulGrp‘ℂfld) = (mulGrp‘ℂfld) | |
2 | fzofi 13391 | . . . 4 ⊢ (0..^3) ∈ Fin | |
3 | 2 | a1i 11 | . . 3 ⊢ (𝜑 → (0..^3) ∈ Fin) |
4 | 3nn 11753 | . . . . 5 ⊢ 3 ∈ ℕ | |
5 | lbfzo0 13126 | . . . . 5 ⊢ (0 ∈ (0..^3) ↔ 3 ∈ ℕ) | |
6 | 4, 5 | mpbir 234 | . . . 4 ⊢ 0 ∈ (0..^3) |
7 | ne0i 4233 | . . . 4 ⊢ (0 ∈ (0..^3) → (0..^3) ≠ ∅) | |
8 | 6, 7 | mp1i 13 | . . 3 ⊢ (𝜑 → (0..^3) ≠ ∅) |
9 | amgm3d.0 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
10 | amgm3d.1 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ+) | |
11 | amgm3d.2 | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ+) | |
12 | 9, 10, 11 | s3cld 14281 | . . . 4 ⊢ (𝜑 → 〈“𝐴𝐵𝐶”〉 ∈ Word ℝ+) |
13 | wrdf 13918 | . . . . . 6 ⊢ (〈“𝐴𝐵𝐶”〉 ∈ Word ℝ+ → 〈“𝐴𝐵𝐶”〉:(0..^(♯‘〈“𝐴𝐵𝐶”〉))⟶ℝ+) | |
14 | s3len 14303 | . . . . . . . . 9 ⊢ (♯‘〈“𝐴𝐵𝐶”〉) = 3 | |
15 | df-3 11738 | . . . . . . . . 9 ⊢ 3 = (2 + 1) | |
16 | 14, 15 | eqtri 2781 | . . . . . . . 8 ⊢ (♯‘〈“𝐴𝐵𝐶”〉) = (2 + 1) |
17 | 16 | oveq2i 7161 | . . . . . . 7 ⊢ (0..^(♯‘〈“𝐴𝐵𝐶”〉)) = (0..^(2 + 1)) |
18 | 17 | feq2i 6490 | . . . . . 6 ⊢ (〈“𝐴𝐵𝐶”〉:(0..^(♯‘〈“𝐴𝐵𝐶”〉))⟶ℝ+ ↔ 〈“𝐴𝐵𝐶”〉:(0..^(2 + 1))⟶ℝ+) |
19 | 13, 18 | sylib 221 | . . . . 5 ⊢ (〈“𝐴𝐵𝐶”〉 ∈ Word ℝ+ → 〈“𝐴𝐵𝐶”〉:(0..^(2 + 1))⟶ℝ+) |
20 | 15 | oveq2i 7161 | . . . . . 6 ⊢ (0..^3) = (0..^(2 + 1)) |
21 | 20 | feq2i 6490 | . . . . 5 ⊢ (〈“𝐴𝐵𝐶”〉:(0..^3)⟶ℝ+ ↔ 〈“𝐴𝐵𝐶”〉:(0..^(2 + 1))⟶ℝ+) |
22 | 19, 21 | sylibr 237 | . . . 4 ⊢ (〈“𝐴𝐵𝐶”〉 ∈ Word ℝ+ → 〈“𝐴𝐵𝐶”〉:(0..^3)⟶ℝ+) |
23 | 12, 22 | syl 17 | . . 3 ⊢ (𝜑 → 〈“𝐴𝐵𝐶”〉:(0..^3)⟶ℝ+) |
24 | 1, 3, 8, 23 | amgmlem 25674 | . 2 ⊢ (𝜑 → (((mulGrp‘ℂfld) Σg 〈“𝐴𝐵𝐶”〉)↑𝑐(1 / (♯‘(0..^3)))) ≤ ((ℂfld Σg 〈“𝐴𝐵𝐶”〉) / (♯‘(0..^3)))) |
25 | cnring 20188 | . . . . 5 ⊢ ℂfld ∈ Ring | |
26 | 1 | ringmgp 19371 | . . . . 5 ⊢ (ℂfld ∈ Ring → (mulGrp‘ℂfld) ∈ Mnd) |
27 | 25, 26 | mp1i 13 | . . . 4 ⊢ (𝜑 → (mulGrp‘ℂfld) ∈ Mnd) |
28 | 9 | rpcnd 12474 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℂ) |
29 | 10 | rpcnd 12474 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℂ) |
30 | 11 | rpcnd 12474 | . . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℂ) |
31 | 28, 29, 30 | jca32 519 | . . . 4 ⊢ (𝜑 → (𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ))) |
32 | cnfldbas 20170 | . . . . . 6 ⊢ ℂ = (Base‘ℂfld) | |
33 | 1, 32 | mgpbas 19313 | . . . . 5 ⊢ ℂ = (Base‘(mulGrp‘ℂfld)) |
34 | cnfldmul 20172 | . . . . . 6 ⊢ · = (.r‘ℂfld) | |
35 | 1, 34 | mgpplusg 19311 | . . . . 5 ⊢ · = (+g‘(mulGrp‘ℂfld)) |
36 | 33, 35 | gsumws3 41275 | . . . 4 ⊢ (((mulGrp‘ℂfld) ∈ Mnd ∧ (𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ))) → ((mulGrp‘ℂfld) Σg 〈“𝐴𝐵𝐶”〉) = (𝐴 · (𝐵 · 𝐶))) |
37 | 27, 31, 36 | syl2anc 587 | . . 3 ⊢ (𝜑 → ((mulGrp‘ℂfld) Σg 〈“𝐴𝐵𝐶”〉) = (𝐴 · (𝐵 · 𝐶))) |
38 | 3nn0 11952 | . . . . 5 ⊢ 3 ∈ ℕ0 | |
39 | hashfzo0 13841 | . . . . 5 ⊢ (3 ∈ ℕ0 → (♯‘(0..^3)) = 3) | |
40 | 38, 39 | mp1i 13 | . . . 4 ⊢ (𝜑 → (♯‘(0..^3)) = 3) |
41 | 40 | oveq2d 7166 | . . 3 ⊢ (𝜑 → (1 / (♯‘(0..^3))) = (1 / 3)) |
42 | 37, 41 | oveq12d 7168 | . 2 ⊢ (𝜑 → (((mulGrp‘ℂfld) Σg 〈“𝐴𝐵𝐶”〉)↑𝑐(1 / (♯‘(0..^3)))) = ((𝐴 · (𝐵 · 𝐶))↑𝑐(1 / 3))) |
43 | ringmnd 19375 | . . . . 5 ⊢ (ℂfld ∈ Ring → ℂfld ∈ Mnd) | |
44 | 25, 43 | mp1i 13 | . . . 4 ⊢ (𝜑 → ℂfld ∈ Mnd) |
45 | cnfldadd 20171 | . . . . 5 ⊢ + = (+g‘ℂfld) | |
46 | 32, 45 | gsumws3 41275 | . . . 4 ⊢ ((ℂfld ∈ Mnd ∧ (𝐴 ∈ ℂ ∧ (𝐵 ∈ ℂ ∧ 𝐶 ∈ ℂ))) → (ℂfld Σg 〈“𝐴𝐵𝐶”〉) = (𝐴 + (𝐵 + 𝐶))) |
47 | 44, 31, 46 | syl2anc 587 | . . 3 ⊢ (𝜑 → (ℂfld Σg 〈“𝐴𝐵𝐶”〉) = (𝐴 + (𝐵 + 𝐶))) |
48 | 47, 40 | oveq12d 7168 | . 2 ⊢ (𝜑 → ((ℂfld Σg 〈“𝐴𝐵𝐶”〉) / (♯‘(0..^3))) = ((𝐴 + (𝐵 + 𝐶)) / 3)) |
49 | 24, 42, 48 | 3brtr3d 5063 | 1 ⊢ (𝜑 → ((𝐴 · (𝐵 · 𝐶))↑𝑐(1 / 3)) ≤ ((𝐴 + (𝐵 + 𝐶)) / 3)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ≠ wne 2951 ∅c0 4225 class class class wbr 5032 ⟶wf 6331 ‘cfv 6335 (class class class)co 7150 Fincfn 8527 ℂcc 10573 0cc0 10575 1c1 10576 + caddc 10578 · cmul 10580 ≤ cle 10714 / cdiv 11335 ℕcn 11674 2c2 11729 3c3 11730 ℕ0cn0 11934 ℝ+crp 12430 ..^cfzo 13082 ♯chash 13740 Word cword 13913 〈“cs3 14251 Σg cgsu 16772 Mndcmnd 17977 mulGrpcmgp 19307 Ringcrg 19365 ℂfldccnfld 20166 ↑𝑐ccxp 25246 |
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 2729 ax-rep 5156 ax-sep 5169 ax-nul 5176 ax-pow 5234 ax-pr 5298 ax-un 7459 ax-inf2 9137 ax-cnex 10631 ax-resscn 10632 ax-1cn 10633 ax-icn 10634 ax-addcl 10635 ax-addrcl 10636 ax-mulcl 10637 ax-mulrcl 10638 ax-mulcom 10639 ax-addass 10640 ax-mulass 10641 ax-distr 10642 ax-i2m1 10643 ax-1ne0 10644 ax-1rid 10645 ax-rnegex 10646 ax-rrecex 10647 ax-cnre 10648 ax-pre-lttri 10649 ax-pre-lttrn 10650 ax-pre-ltadd 10651 ax-pre-mulgt0 10652 ax-pre-sup 10653 ax-addf 10654 ax-mulf 10655 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3697 df-csb 3806 df-dif 3861 df-un 3863 df-in 3865 df-ss 3875 df-pss 3877 df-nul 4226 df-if 4421 df-pw 4496 df-sn 4523 df-pr 4525 df-tp 4527 df-op 4529 df-uni 4799 df-int 4839 df-iun 4885 df-iin 4886 df-br 5033 df-opab 5095 df-mpt 5113 df-tr 5139 df-id 5430 df-eprel 5435 df-po 5443 df-so 5444 df-fr 5483 df-se 5484 df-we 5485 df-xp 5530 df-rel 5531 df-cnv 5532 df-co 5533 df-dm 5534 df-rn 5535 df-res 5536 df-ima 5537 df-pred 6126 df-ord 6172 df-on 6173 df-lim 6174 df-suc 6175 df-iota 6294 df-fun 6337 df-fn 6338 df-f 6339 df-f1 6340 df-fo 6341 df-f1o 6342 df-fv 6343 df-isom 6344 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-of 7405 df-om 7580 df-1st 7693 df-2nd 7694 df-supp 7836 df-tpos 7902 df-wrecs 7957 df-recs 8018 df-rdg 8056 df-1o 8112 df-2o 8113 df-er 8299 df-map 8418 df-pm 8419 df-ixp 8480 df-en 8528 df-dom 8529 df-sdom 8530 df-fin 8531 df-fsupp 8867 df-fi 8908 df-sup 8939 df-inf 8940 df-oi 9007 df-card 9401 df-pnf 10715 df-mnf 10716 df-xr 10717 df-ltxr 10718 df-le 10719 df-sub 10910 df-neg 10911 df-div 11336 df-nn 11675 df-2 11737 df-3 11738 df-4 11739 df-5 11740 df-6 11741 df-7 11742 df-8 11743 df-9 11744 df-n0 11935 df-z 12021 df-dec 12138 df-uz 12283 df-q 12389 df-rp 12431 df-xneg 12548 df-xadd 12549 df-xmul 12550 df-ioo 12783 df-ioc 12784 df-ico 12785 df-icc 12786 df-fz 12940 df-fzo 13083 df-fl 13211 df-mod 13287 df-seq 13419 df-exp 13480 df-fac 13684 df-bc 13713 df-hash 13741 df-word 13914 df-concat 13970 df-s1 13997 df-s2 14257 df-s3 14258 df-shft 14474 df-cj 14506 df-re 14507 df-im 14508 df-sqrt 14642 df-abs 14643 df-limsup 14876 df-clim 14893 df-rlim 14894 df-sum 15091 df-ef 15469 df-sin 15471 df-cos 15472 df-pi 15474 df-struct 16543 df-ndx 16544 df-slot 16545 df-base 16547 df-sets 16548 df-ress 16549 df-plusg 16636 df-mulr 16637 df-starv 16638 df-sca 16639 df-vsca 16640 df-ip 16641 df-tset 16642 df-ple 16643 df-ds 16645 df-unif 16646 df-hom 16647 df-cco 16648 df-rest 16754 df-topn 16755 df-0g 16773 df-gsum 16774 df-topgen 16775 df-pt 16776 df-prds 16779 df-xrs 16833 df-qtop 16838 df-imas 16839 df-xps 16841 df-mre 16915 df-mrc 16916 df-acs 16918 df-mgm 17918 df-sgrp 17967 df-mnd 17978 df-mhm 18022 df-submnd 18023 df-grp 18172 df-minusg 18173 df-mulg 18292 df-subg 18343 df-ghm 18423 df-gim 18466 df-cntz 18514 df-cmn 18975 df-abl 18976 df-mgp 19308 df-ur 19320 df-ring 19367 df-cring 19368 df-oppr 19444 df-dvdsr 19462 df-unit 19463 df-invr 19493 df-dvr 19504 df-drng 19572 df-subrg 19601 df-psmet 20158 df-xmet 20159 df-met 20160 df-bl 20161 df-mopn 20162 df-fbas 20163 df-fg 20164 df-cnfld 20167 df-refld 20370 df-top 21594 df-topon 21611 df-topsp 21633 df-bases 21646 df-cld 21719 df-ntr 21720 df-cls 21721 df-nei 21798 df-lp 21836 df-perf 21837 df-cn 21927 df-cnp 21928 df-haus 22015 df-cmp 22087 df-tx 22262 df-hmeo 22455 df-fil 22546 df-fm 22638 df-flim 22639 df-flf 22640 df-xms 23022 df-ms 23023 df-tms 23024 df-cncf 23579 df-limc 24565 df-dv 24566 df-log 25247 df-cxp 25248 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |