Mathbox for Alexander van der Vekens |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > cznnring | Structured version Visualization version GIF version |
Description: The ring constructed from a ℤ/nℤ structure with 1 < 𝑛 by replacing the (multiplicative) ring operation by a constant operation is not a unital ring. (Contributed by AV, 17-Feb-2020.) |
Ref | Expression |
---|---|
cznrng.y | ⊢ 𝑌 = (ℤ/nℤ‘𝑁) |
cznrng.b | ⊢ 𝐵 = (Base‘𝑌) |
cznrng.x | ⊢ 𝑋 = (𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉) |
cznrng.0 | ⊢ 0 = (0g‘𝑌) |
Ref | Expression |
---|---|
cznnring | ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → 𝑋 ∉ Ring) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . . . . . . 7 ⊢ (mulGrp‘𝑋) = (mulGrp‘𝑋) | |
2 | cznrng.y | . . . . . . . 8 ⊢ 𝑌 = (ℤ/nℤ‘𝑁) | |
3 | cznrng.b | . . . . . . . 8 ⊢ 𝐵 = (Base‘𝑌) | |
4 | cznrng.x | . . . . . . . 8 ⊢ 𝑋 = (𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉) | |
5 | 2, 3, 4 | cznrnglem 45399 | . . . . . . 7 ⊢ 𝐵 = (Base‘𝑋) |
6 | 1, 5 | mgpbas 19641 | . . . . . 6 ⊢ 𝐵 = (Base‘(mulGrp‘𝑋)) |
7 | 4 | fveq2i 6759 | . . . . . . . 8 ⊢ (mulGrp‘𝑋) = (mulGrp‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉)) |
8 | 2 | fvexi 6770 | . . . . . . . . 9 ⊢ 𝑌 ∈ V |
9 | 3 | fvexi 6770 | . . . . . . . . . 10 ⊢ 𝐵 ∈ V |
10 | 9, 9 | mpoex 7893 | . . . . . . . . 9 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) ∈ V |
11 | mulrid 16930 | . . . . . . . . . 10 ⊢ .r = Slot (.r‘ndx) | |
12 | 11 | setsid 16837 | . . . . . . . . 9 ⊢ ((𝑌 ∈ V ∧ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) ∈ V) → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))) |
13 | 8, 10, 12 | mp2an 688 | . . . . . . . 8 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉)) |
14 | 7, 13 | mgpplusg 19639 | . . . . . . 7 ⊢ (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) = (+g‘(mulGrp‘𝑋)) |
15 | 14 | eqcomi 2747 | . . . . . 6 ⊢ (+g‘(mulGrp‘𝑋)) = (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶) |
16 | simpr 484 | . . . . . 6 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → 𝐶 ∈ 𝐵) | |
17 | eluz2 12517 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘2) ↔ (2 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 2 ≤ 𝑁)) | |
18 | 1lt2 12074 | . . . . . . . . . 10 ⊢ 1 < 2 | |
19 | 1red 10907 | . . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℤ → 1 ∈ ℝ) | |
20 | 2re 11977 | . . . . . . . . . . . . . . 15 ⊢ 2 ∈ ℝ | |
21 | 20 | a1i 11 | . . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℤ → 2 ∈ ℝ) |
22 | zre 12253 | . . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℝ) | |
23 | ltletr 10997 | . . . . . . . . . . . . . 14 ⊢ ((1 ∈ ℝ ∧ 2 ∈ ℝ ∧ 𝑁 ∈ ℝ) → ((1 < 2 ∧ 2 ≤ 𝑁) → 1 < 𝑁)) | |
24 | 19, 21, 22, 23 | syl3anc 1369 | . . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℤ → ((1 < 2 ∧ 2 ≤ 𝑁) → 1 < 𝑁)) |
25 | 24 | expcomd 416 | . . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℤ → (2 ≤ 𝑁 → (1 < 2 → 1 < 𝑁))) |
26 | 25 | a1i 11 | . . . . . . . . . . 11 ⊢ (2 ∈ ℤ → (𝑁 ∈ ℤ → (2 ≤ 𝑁 → (1 < 2 → 1 < 𝑁)))) |
27 | 26 | 3imp 1109 | . . . . . . . . . 10 ⊢ ((2 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 2 ≤ 𝑁) → (1 < 2 → 1 < 𝑁)) |
28 | 18, 27 | mpi 20 | . . . . . . . . 9 ⊢ ((2 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 2 ≤ 𝑁) → 1 < 𝑁) |
29 | 17, 28 | sylbi 216 | . . . . . . . 8 ⊢ (𝑁 ∈ (ℤ≥‘2) → 1 < 𝑁) |
30 | eluz2nn 12553 | . . . . . . . . 9 ⊢ (𝑁 ∈ (ℤ≥‘2) → 𝑁 ∈ ℕ) | |
31 | 2, 3 | znhash 20678 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (♯‘𝐵) = 𝑁) |
32 | 30, 31 | syl 17 | . . . . . . . 8 ⊢ (𝑁 ∈ (ℤ≥‘2) → (♯‘𝐵) = 𝑁) |
33 | 29, 32 | breqtrrd 5098 | . . . . . . 7 ⊢ (𝑁 ∈ (ℤ≥‘2) → 1 < (♯‘𝐵)) |
34 | 33 | adantr 480 | . . . . . 6 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → 1 < (♯‘𝐵)) |
35 | 6, 15, 16, 34 | copisnmnd 45251 | . . . . 5 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → (mulGrp‘𝑋) ∉ Mnd) |
36 | df-nel 3049 | . . . . 5 ⊢ ((mulGrp‘𝑋) ∉ Mnd ↔ ¬ (mulGrp‘𝑋) ∈ Mnd) | |
37 | 35, 36 | sylib 217 | . . . 4 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → ¬ (mulGrp‘𝑋) ∈ Mnd) |
38 | 37 | intn3an2d 1478 | . . 3 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → ¬ (𝑋 ∈ Grp ∧ (mulGrp‘𝑋) ∈ Mnd ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))(𝑏(+g‘𝑋)𝑐)) = ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑏)(+g‘𝑋)(𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐)) ∧ ((𝑎(+g‘𝑋)𝑏)(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐) = ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐)(+g‘𝑋)(𝑏(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐))))) |
39 | eqid 2738 | . . . 4 ⊢ (+g‘𝑋) = (+g‘𝑋) | |
40 | 4 | eqcomi 2747 | . . . . 5 ⊢ (𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉) = 𝑋 |
41 | 40 | fveq2i 6759 | . . . 4 ⊢ (.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉)) = (.r‘𝑋) |
42 | 5, 1, 39, 41 | isring 19702 | . . 3 ⊢ (𝑋 ∈ Ring ↔ (𝑋 ∈ Grp ∧ (mulGrp‘𝑋) ∈ Mnd ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝐵 ∀𝑐 ∈ 𝐵 ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))(𝑏(+g‘𝑋)𝑐)) = ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑏)(+g‘𝑋)(𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐)) ∧ ((𝑎(+g‘𝑋)𝑏)(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐) = ((𝑎(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐)(+g‘𝑋)(𝑏(.r‘(𝑌 sSet 〈(.r‘ndx), (𝑥 ∈ 𝐵, 𝑦 ∈ 𝐵 ↦ 𝐶)〉))𝑐))))) |
43 | 38, 42 | sylnibr 328 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → ¬ 𝑋 ∈ Ring) |
44 | df-nel 3049 | . 2 ⊢ (𝑋 ∉ Ring ↔ ¬ 𝑋 ∈ Ring) | |
45 | 43, 44 | sylibr 233 | 1 ⊢ ((𝑁 ∈ (ℤ≥‘2) ∧ 𝐶 ∈ 𝐵) → 𝑋 ∉ Ring) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ∉ wnel 3048 ∀wral 3063 Vcvv 3422 〈cop 4564 class class class wbr 5070 ‘cfv 6418 (class class class)co 7255 ∈ cmpo 7257 ℝcr 10801 1c1 10803 < clt 10940 ≤ cle 10941 ℕcn 11903 2c2 11958 ℤcz 12249 ℤ≥cuz 12511 ♯chash 13972 sSet csts 16792 ndxcnx 16822 Basecbs 16840 +gcplusg 16888 .rcmulr 16889 0gc0g 17067 Mndcmnd 18300 Grpcgrp 18492 mulGrpcmgp 19635 Ringcrg 19698 ℤ/nℤczn 20616 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 ax-addf 10881 ax-mulf 10882 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-tpos 8013 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-ec 8458 df-qs 8462 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-xnn0 12236 df-z 12250 df-dec 12367 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-fl 13440 df-mod 13518 df-seq 13650 df-hash 13973 df-dvds 15892 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-starv 16903 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-0g 17069 df-imas 17136 df-qus 17137 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-mhm 18345 df-grp 18495 df-minusg 18496 df-sbg 18497 df-mulg 18616 df-subg 18667 df-nsg 18668 df-eqg 18669 df-ghm 18747 df-cmn 19303 df-abl 19304 df-mgp 19636 df-ur 19653 df-ring 19700 df-cring 19701 df-oppr 19777 df-dvdsr 19798 df-rnghom 19874 df-subrg 19937 df-lmod 20040 df-lss 20109 df-lsp 20149 df-sra 20349 df-rgmod 20350 df-lidl 20351 df-rsp 20352 df-2idl 20416 df-cnfld 20511 df-zring 20583 df-zrh 20617 df-zn 20620 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |