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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 2731 | . . 3 ⊢ (AbsVal‘𝑅) = (AbsVal‘𝑅) | |
| 3 | 1, 2 | nrgabv 24582 | . 2 ⊢ (𝑅 ∈ NrmRing → 𝑁 ∈ (AbsVal‘𝑅)) |
| 4 | nm1.u | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 5 | eqid 2731 | . . 3 ⊢ (0g‘𝑅) = (0g‘𝑅) | |
| 6 | 4, 5 | nzrnz 20436 | . 2 ⊢ (𝑅 ∈ NzRing → 1 ≠ (0g‘𝑅)) |
| 7 | 2, 4, 5 | abv1z 20745 | . 2 ⊢ ((𝑁 ∈ (AbsVal‘𝑅) ∧ 1 ≠ (0g‘𝑅)) → (𝑁‘ 1 ) = 1) |
| 8 | 3, 6, 7 | syl2an 596 | 1 ⊢ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ NzRing) → (𝑁‘ 1 ) = 1) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2111 ≠ wne 2928 ‘cfv 6487 1c1 11013 0gc0g 17349 1rcur 20105 NzRingcnzr 20433 AbsValcabv 20729 normcnm 24497 NrmRingcnrg 24500 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11068 ax-resscn 11069 ax-1cn 11070 ax-icn 11071 ax-addcl 11072 ax-addrcl 11073 ax-mulcl 11074 ax-mulrcl 11075 ax-mulcom 11076 ax-addass 11077 ax-mulass 11078 ax-distr 11079 ax-i2m1 11080 ax-1ne0 11081 ax-1rid 11082 ax-rnegex 11083 ax-rrecex 11084 ax-cnre 11085 ax-pre-lttri 11086 ax-pre-lttrn 11087 ax-pre-ltadd 11088 ax-pre-mulgt0 11089 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-map 8758 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11154 df-mnf 11155 df-xr 11156 df-ltxr 11157 df-le 11158 df-sub 11352 df-neg 11353 df-div 11781 df-nn 12132 df-2 12194 df-ico 13257 df-sets 17081 df-slot 17099 df-ndx 17111 df-base 17127 df-plusg 17180 df-0g 17351 df-mgm 18554 df-sgrp 18633 df-mnd 18649 df-mgp 20065 df-ur 20106 df-ring 20159 df-nzr 20434 df-abv 20730 df-nrg 24506 |
| This theorem is referenced by: nminvr 24590 zrhnm 33987 |
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