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| Mirrors > Home > MPE Home > Th. List > nm1 | Structured version Visualization version GIF version | ||
| Description: The norm of one in a nonzero normed ring. (Contributed by Mario Carneiro, 5-Oct-2015.) |
| Ref | Expression |
|---|---|
| nm1.n | ⊢ 𝑁 = (norm‘𝑅) |
| nm1.u | ⊢ 1 = (1r‘𝑅) |
| Ref | Expression |
|---|---|
| nm1 | ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing) → (𝑁‘ 1 ) = 1) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nm1.n | . . 3 ⊢ 𝑁 = (norm‘𝑅) | |
| 2 | eqid 2729 | . . 3 ⊢ (AbsVal‘𝑅) = (AbsVal‘𝑅) | |
| 3 | 1, 2 | nrgabv 24669 | . 2 ⊢ (𝑅 ∈ NrmRing → 𝑁 ∈ (AbsVal‘𝑅)) |
| 4 | nm1.u | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 5 | eqid 2729 | . . 3 ⊢ (0g‘𝑅) = (0g‘𝑅) | |
| 6 | 4, 5 | nzrnz 20509 | . 2 ⊢ (𝑅 ∈ NzRing → 1 ≠ (0g‘𝑅)) |
| 7 | 2, 4, 5 | abv1z 20815 | . 2 ⊢ ((𝑁 ∈ (AbsVal‘𝑅) ∧ 1 ≠ (0g‘𝑅)) → (𝑁‘ 1 ) = 1) |
| 8 | 3, 6, 7 | syl2an 594 | 1 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing) → (𝑁‘ 1 ) = 1) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 394 = wceq 1534 ∈ wcel 2100 ≠ wne 2933 ‘cfv 6556 1c1 11160 0gc0g 17467 1rcur 20176 NzRingcnzr 20506 AbsValcabv 20799 normcnm 24576 NrmRingcnrg 24579 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2102 ax-9 2110 ax-10 2133 ax-11 2150 ax-12 2170 ax-ext 2700 ax-sep 5305 ax-nul 5312 ax-pow 5371 ax-pr 5435 ax-un 7748 ax-cnex 11215 ax-resscn 11216 ax-1cn 11217 ax-icn 11218 ax-addcl 11219 ax-addrcl 11220 ax-mulcl 11221 ax-mulrcl 11222 ax-mulcom 11223 ax-addass 11224 ax-mulass 11225 ax-distr 11226 ax-i2m1 11227 ax-1ne0 11228 ax-1rid 11229 ax-rnegex 11230 ax-rrecex 11231 ax-cnre 11232 ax-pre-lttri 11233 ax-pre-lttrn 11234 ax-pre-ltadd 11235 ax-pre-mulgt0 11236 |
| This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2062 df-mo 2532 df-eu 2561 df-clab 2707 df-cleq 2721 df-clel 2806 df-nfc 2881 df-ne 2934 df-nel 3040 df-ral 3055 df-rex 3064 df-rmo 3373 df-reu 3374 df-rab 3429 df-v 3474 df-sbc 3788 df-csb 3904 df-dif 3961 df-un 3963 df-in 3965 df-ss 3975 df-pss 3978 df-nul 4334 df-if 4535 df-pw 4610 df-sn 4635 df-pr 4637 df-op 4641 df-uni 4917 df-iun 5006 df-br 5155 df-opab 5217 df-mpt 5238 df-tr 5272 df-id 5582 df-eprel 5588 df-po 5596 df-so 5597 df-fr 5639 df-we 5641 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-pred 6315 df-ord 6381 df-on 6382 df-lim 6383 df-suc 6384 df-iota 6508 df-fun 6558 df-fn 6559 df-f 6560 df-f1 6561 df-fo 6562 df-f1o 6563 df-fv 6564 df-riota 7383 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7882 df-2nd 8009 df-frecs 8300 df-wrecs 8331 df-recs 8405 df-rdg 8444 df-er 8738 df-map 8861 df-en 8979 df-dom 8980 df-sdom 8981 df-pnf 11301 df-mnf 11302 df-xr 11303 df-ltxr 11304 df-le 11305 df-sub 11497 df-neg 11498 df-div 11923 df-nn 12269 df-2 12331 df-ico 13388 df-sets 17179 df-slot 17197 df-ndx 17209 df-base 17227 df-plusg 17292 df-0g 17469 df-mgm 18646 df-sgrp 18725 df-mnd 18741 df-mgp 20130 df-ur 20177 df-ring 20230 df-nzr 20507 df-abv 20800 df-nrg 24585 |
| This theorem is referenced by: nminvr 24677 zrhnm 33860 |
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