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Mirrors > Home > MPE Home > Th. List > nminvr | Structured version Visualization version GIF version |
Description: The norm of an inverse in a nonzero normed ring. (Contributed by Mario Carneiro, 5-Oct-2015.) |
Ref | Expression |
---|---|
nminvr.n | ⊢ 𝑁 = (norm‘𝑅) |
nminvr.u | ⊢ 𝑈 = (Unit‘𝑅) |
nminvr.i | ⊢ 𝐼 = (invr‘𝑅) |
Ref | Expression |
---|---|
nminvr | ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐼‘𝐴)) = (1 / (𝑁‘𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nrgngp 23514 | . . . . 5 ⊢ (𝑅 ∈ NrmRing → 𝑅 ∈ NrmGrp) | |
2 | 1 | 3ad2ant1 1135 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝑅 ∈ NrmGrp) |
3 | eqid 2736 | . . . . . 6 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
4 | nminvr.u | . . . . . 6 ⊢ 𝑈 = (Unit‘𝑅) | |
5 | 3, 4 | unitcl 19631 | . . . . 5 ⊢ (𝐴 ∈ 𝑈 → 𝐴 ∈ (Base‘𝑅)) |
6 | 5 | 3ad2ant3 1137 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝐴 ∈ (Base‘𝑅)) |
7 | nminvr.n | . . . . 5 ⊢ 𝑁 = (norm‘𝑅) | |
8 | 3, 7 | nmcl 23468 | . . . 4 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ (Base‘𝑅)) → (𝑁‘𝐴) ∈ ℝ) |
9 | 2, 6, 8 | syl2anc 587 | . . 3 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘𝐴) ∈ ℝ) |
10 | 9 | recnd 10826 | . 2 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘𝐴) ∈ ℂ) |
11 | nzrring 20253 | . . . . . 6 ⊢ (𝑅 ∈ NzRing → 𝑅 ∈ Ring) | |
12 | 11 | 3ad2ant2 1136 | . . . . 5 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝑅 ∈ Ring) |
13 | simp3 1140 | . . . . 5 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝐴 ∈ 𝑈) | |
14 | nminvr.i | . . . . . 6 ⊢ 𝐼 = (invr‘𝑅) | |
15 | 4, 14, 3 | ringinvcl 19648 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑈) → (𝐼‘𝐴) ∈ (Base‘𝑅)) |
16 | 12, 13, 15 | syl2anc 587 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝐼‘𝐴) ∈ (Base‘𝑅)) |
17 | 3, 7 | nmcl 23468 | . . . 4 ⊢ ((𝑅 ∈ NrmGrp ∧ (𝐼‘𝐴) ∈ (Base‘𝑅)) → (𝑁‘(𝐼‘𝐴)) ∈ ℝ) |
18 | 2, 16, 17 | syl2anc 587 | . . 3 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐼‘𝐴)) ∈ ℝ) |
19 | 18 | recnd 10826 | . 2 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐼‘𝐴)) ∈ ℂ) |
20 | 7, 4 | unitnmn0 23520 | . 2 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘𝐴) ≠ 0) |
21 | eqid 2736 | . . . . . 6 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
22 | eqid 2736 | . . . . . 6 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
23 | 4, 14, 21, 22 | unitrinv 19650 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑈) → (𝐴(.r‘𝑅)(𝐼‘𝐴)) = (1r‘𝑅)) |
24 | 12, 13, 23 | syl2anc 587 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝐴(.r‘𝑅)(𝐼‘𝐴)) = (1r‘𝑅)) |
25 | 24 | fveq2d 6699 | . . 3 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐴(.r‘𝑅)(𝐼‘𝐴))) = (𝑁‘(1r‘𝑅))) |
26 | simp1 1138 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝑅 ∈ NrmRing) | |
27 | 3, 7, 21 | nmmul 23516 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝐴 ∈ (Base‘𝑅) ∧ (𝐼‘𝐴) ∈ (Base‘𝑅)) → (𝑁‘(𝐴(.r‘𝑅)(𝐼‘𝐴))) = ((𝑁‘𝐴) · (𝑁‘(𝐼‘𝐴)))) |
28 | 26, 6, 16, 27 | syl3anc 1373 | . . 3 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐴(.r‘𝑅)(𝐼‘𝐴))) = ((𝑁‘𝐴) · (𝑁‘(𝐼‘𝐴)))) |
29 | 7, 22 | nm1 23519 | . . . 4 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing) → (𝑁‘(1r‘𝑅)) = 1) |
30 | 29 | 3adant3 1134 | . . 3 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(1r‘𝑅)) = 1) |
31 | 25, 28, 30 | 3eqtr3d 2779 | . 2 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → ((𝑁‘𝐴) · (𝑁‘(𝐼‘𝐴))) = 1) |
32 | 10, 19, 20, 31 | mvllmuld 11629 | 1 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → (𝑁‘(𝐼‘𝐴)) = (1 / (𝑁‘𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1089 = wceq 1543 ∈ wcel 2112 ‘cfv 6358 (class class class)co 7191 ℝcr 10693 1c1 10695 · cmul 10699 / cdiv 11454 Basecbs 16666 .rcmulr 16750 1rcur 19470 Ringcrg 19516 Unitcui 19611 invrcinvr 19643 NzRingcnzr 20249 normcnm 23428 NrmGrpcngp 23429 NrmRingcnrg 23431 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-cnex 10750 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-pre-mulgt0 10771 ax-pre-sup 10772 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-om 7623 df-1st 7739 df-2nd 7740 df-tpos 7946 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-er 8369 df-map 8488 df-en 8605 df-dom 8606 df-sdom 8607 df-sup 9036 df-inf 9037 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-div 11455 df-nn 11796 df-2 11858 df-3 11859 df-n0 12056 df-z 12142 df-uz 12404 df-q 12510 df-rp 12552 df-xneg 12669 df-xadd 12670 df-xmul 12671 df-ico 12906 df-ndx 16669 df-slot 16670 df-base 16672 df-sets 16673 df-ress 16674 df-plusg 16762 df-mulr 16763 df-0g 16900 df-topgen 16902 df-mgm 18068 df-sgrp 18117 df-mnd 18128 df-grp 18322 df-minusg 18323 df-mgp 19459 df-ur 19471 df-ring 19518 df-oppr 19595 df-dvdsr 19613 df-unit 19614 df-invr 19644 df-abv 19807 df-nzr 20250 df-psmet 20309 df-xmet 20310 df-met 20311 df-bl 20312 df-mopn 20313 df-top 21745 df-topon 21762 df-topsp 21784 df-bases 21797 df-xms 23172 df-ms 23173 df-nm 23434 df-ngp 23435 df-nrg 23437 |
This theorem is referenced by: nmdvr 23522 |
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