nmmulg - Mathbox for Thierry Arnoux

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Theorem nmmulg 34150

Description: The norm of a group product, provided the ℤ-module is normed. (Contributed by Thierry Arnoux, 8-Nov-2017.)

**Hypotheses**
Ref	Expression
nmmulg.x	⊢ 𝐵 = (Base‘𝑅)
nmmulg.n	⊢ 𝑁 = (norm‘𝑅)
nmmulg.z	⊢ 𝑍 = (ℤMod‘𝑅)
nmmulg.t	⊢ · = (._g‘𝑅)

**Assertion**
Ref	Expression
nmmulg	⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑁‘(𝑀 · 𝑋)) = ((abs‘𝑀) · (𝑁‘𝑋)))

**Proof of Theorem nmmulg**
Step	Hyp	Ref	Expression
1		simp2 1143	. . . 4 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → 𝑀 ∈ ℤ)
2		zringbas 21428	. . . . 5 ⊢ ℤ = (Base‘ℤ_ring)
3		nlmlmod 24661	. . . . . . . . 9 ⊢ (𝑍 ∈ NrmMod → 𝑍 ∈ LMod)
4		nmmulg.z	. . . . . . . . . 10 ⊢ 𝑍 = (ℤMod‘𝑅)
5	4	zlmlmod 21497	. . . . . . . . 9 ⊢ (𝑅 ∈ Abel ↔ 𝑍 ∈ LMod)
6	3, 5	sylibr 235	. . . . . . . 8 ⊢ (𝑍 ∈ NrmMod → 𝑅 ∈ Abel)
7	6	3ad2ant1 1139	. . . . . . 7 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → 𝑅 ∈ Abel)
8	4	zlmsca 21495	. . . . . . 7 ⊢ (𝑅 ∈ Abel → ℤ_ring = (Scalar‘𝑍))
9	7, 8	syl 17	. . . . . 6 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ℤ_ring = (Scalar‘𝑍))
10	9	fveq2d 6831	. . . . 5 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (Base‘ℤ_ring) = (Base‘(Scalar‘𝑍)))
11	2, 10	eqtrid 2786	. . . 4 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ℤ = (Base‘(Scalar‘𝑍)))
12	1, 11	eleqtrd 2841	. . 3 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → 𝑀 ∈ (Base‘(Scalar‘𝑍)))
13		nmmulg.x	. . . . 5 ⊢ 𝐵 = (Base‘𝑅)
14	4, 13	zlmbas 21492	. . . 4 ⊢ 𝐵 = (Base‘𝑍)
15		eqid 2739	. . . 4 ⊢ (norm‘𝑍) = (norm‘𝑍)
16		nmmulg.t	. . . . 5 ⊢ · = (._g‘𝑅)
17	4, 16	zlmvsca 21496	. . . 4 ⊢ · = ( ·_𝑠 ‘𝑍)
18		eqid 2739	. . . 4 ⊢ (Scalar‘𝑍) = (Scalar‘𝑍)
19		eqid 2739	. . . 4 ⊢ (Base‘(Scalar‘𝑍)) = (Base‘(Scalar‘𝑍))
20		eqid 2739	. . . 4 ⊢ (norm‘(Scalar‘𝑍)) = (norm‘(Scalar‘𝑍))
21	14, 15, 17, 18, 19, 20	nmvs 24659	. . 3 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ (Base‘(Scalar‘𝑍)) ∧ 𝑋 ∈ 𝐵) → ((norm‘𝑍)‘(𝑀 · 𝑋)) = (((norm‘(Scalar‘𝑍))‘𝑀) · ((norm‘𝑍)‘𝑋)))
22	12, 21	syld3an2 1419	. 2 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ((norm‘𝑍)‘(𝑀 · 𝑋)) = (((norm‘(Scalar‘𝑍))‘𝑀) · ((norm‘𝑍)‘𝑋)))
23		nmmulg.n	. . . . 5 ⊢ 𝑁 = (norm‘𝑅)
24	4, 23	zlmnm 34148	. . . 4 ⊢ (𝑅 ∈ Abel → 𝑁 = (norm‘𝑍))
25	7, 24	syl 17	. . 3 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → 𝑁 = (norm‘𝑍))
26	25	fveq1d 6829	. 2 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑁‘(𝑀 · 𝑋)) = ((norm‘𝑍)‘(𝑀 · 𝑋)))
27		zzsnm 34143	. . . . 5 ⊢ (𝑀 ∈ ℤ → (abs‘𝑀) = ((norm‘ℤ_ring)‘𝑀))
28	27	3ad2ant2 1140	. . . 4 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (abs‘𝑀) = ((norm‘ℤ_ring)‘𝑀))
29	9	fveq2d 6831	. . . . 5 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (norm‘ℤ_ring) = (norm‘(Scalar‘𝑍)))
30	29	fveq1d 6829	. . . 4 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ((norm‘ℤ_ring)‘𝑀) = ((norm‘(Scalar‘𝑍))‘𝑀))
31	28, 30	eqtrd 2774	. . 3 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (abs‘𝑀) = ((norm‘(Scalar‘𝑍))‘𝑀))
32	25	fveq1d 6829	. . 3 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑁‘𝑋) = ((norm‘𝑍)‘𝑋))
33	31, 32	oveq12d 7374	. 2 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → ((abs‘𝑀) · (𝑁‘𝑋)) = (((norm‘(Scalar‘𝑍))‘𝑀) · ((norm‘𝑍)‘𝑋)))
34	22, 26, 33	3eqtr4d 2784	1 ⊢ ((𝑍 ∈ NrmMod ∧ 𝑀 ∈ ℤ ∧ 𝑋 ∈ 𝐵) → (𝑁‘(𝑀 · 𝑋)) = ((abs‘𝑀) · (𝑁‘𝑋)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 ‘cfv 6485 (class class class)co 7356 · cmul 11034 ℤcz 12515 abscabs 15187 Basecbs 17170 Scalarcsca 17214 ._gcmg 19034 Abelcabl 19747 LModclmod 20850 ℤ_ringczring 21421 ℤModczlm 21475 normcnm 24559 NrmModcnlm 24563

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107 ax-addf 11108 ax-mulf 11109

This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-sup 9345 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-rp 12934 df-fz 13453 df-fzo 13600 df-seq 13955 df-exp 14015 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-starv 17226 df-sca 17227 df-vsca 17228 df-ip 17229 df-tset 17230 df-ple 17231 df-ds 17233 df-unif 17234 df-0g 17395 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-grp 18903 df-minusg 18904 df-mulg 19035 df-subg 19090 df-cmn 19748 df-abl 19749 df-mgp 20113 df-rng 20125 df-ur 20154 df-ring 20207 df-cring 20208 df-subrng 20518 df-subrg 20542 df-lmod 20852 df-cnfld 21348 df-zring 21422 df-zlm 21479 df-nm 24565 df-nlm 24569

This theorem is referenced by: zrhnm 34151

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