Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > zringndrg | Structured version Visualization version GIF version |
Description: The integers are not a division ring, and therefore not a field. (Contributed by AV, 22-Oct-2021.) |
Ref | Expression |
---|---|
zringndrg | ⊢ ℤring ∉ DivRing |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1ne2 12111 | . . . . . . 7 ⊢ 1 ≠ 2 | |
2 | 1 | nesymi 3000 | . . . . . 6 ⊢ ¬ 2 = 1 |
3 | 2re 11977 | . . . . . . . 8 ⊢ 2 ∈ ℝ | |
4 | 0le2 12005 | . . . . . . . 8 ⊢ 0 ≤ 2 | |
5 | absid 14936 | . . . . . . . 8 ⊢ ((2 ∈ ℝ ∧ 0 ≤ 2) → (abs‘2) = 2) | |
6 | 3, 4, 5 | mp2an 688 | . . . . . . 7 ⊢ (abs‘2) = 2 |
7 | 6 | eqeq1i 2743 | . . . . . 6 ⊢ ((abs‘2) = 1 ↔ 2 = 1) |
8 | 2, 7 | mtbir 322 | . . . . 5 ⊢ ¬ (abs‘2) = 1 |
9 | 8 | intnan 486 | . . . 4 ⊢ ¬ (2 ∈ ℤ ∧ (abs‘2) = 1) |
10 | zringunit 20600 | . . . 4 ⊢ (2 ∈ (Unit‘ℤring) ↔ (2 ∈ ℤ ∧ (abs‘2) = 1)) | |
11 | 9, 10 | mtbir 322 | . . 3 ⊢ ¬ 2 ∈ (Unit‘ℤring) |
12 | zringbas 20588 | . . . . 5 ⊢ ℤ = (Base‘ℤring) | |
13 | eqid 2738 | . . . . 5 ⊢ (Unit‘ℤring) = (Unit‘ℤring) | |
14 | zring0 20592 | . . . . 5 ⊢ 0 = (0g‘ℤring) | |
15 | 12, 13, 14 | isdrng 19910 | . . . 4 ⊢ (ℤring ∈ DivRing ↔ (ℤring ∈ Ring ∧ (Unit‘ℤring) = (ℤ ∖ {0}))) |
16 | 2z 12282 | . . . . . 6 ⊢ 2 ∈ ℤ | |
17 | 2ne0 12007 | . . . . . 6 ⊢ 2 ≠ 0 | |
18 | eldifsn 4717 | . . . . . 6 ⊢ (2 ∈ (ℤ ∖ {0}) ↔ (2 ∈ ℤ ∧ 2 ≠ 0)) | |
19 | 16, 17, 18 | mpbir2an 707 | . . . . 5 ⊢ 2 ∈ (ℤ ∖ {0}) |
20 | id 22 | . . . . 5 ⊢ ((Unit‘ℤring) = (ℤ ∖ {0}) → (Unit‘ℤring) = (ℤ ∖ {0})) | |
21 | 19, 20 | eleqtrrid 2846 | . . . 4 ⊢ ((Unit‘ℤring) = (ℤ ∖ {0}) → 2 ∈ (Unit‘ℤring)) |
22 | 15, 21 | simplbiim 504 | . . 3 ⊢ (ℤring ∈ DivRing → 2 ∈ (Unit‘ℤring)) |
23 | 11, 22 | mto 196 | . 2 ⊢ ¬ ℤring ∈ DivRing |
24 | 23 | nelir 3051 | 1 ⊢ ℤring ∉ DivRing |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 395 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∉ wnel 3048 ∖ cdif 3880 {csn 4558 class class class wbr 5070 ‘cfv 6418 ℝcr 10801 0cc0 10802 1c1 10803 ≤ cle 10941 2c2 11958 ℤcz 12249 abscabs 14873 Ringcrg 19698 Unitcui 19796 DivRingcdr 19906 ℤringzring 20582 |
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-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-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 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-z 12250 df-dec 12367 df-uz 12512 df-rp 12660 df-fz 13169 df-seq 13650 df-exp 13711 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-gz 16559 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-tset 16907 df-ple 16908 df-ds 16910 df-unif 16911 df-0g 17069 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-grp 18495 df-minusg 18496 df-subg 18667 df-cmn 19303 df-mgp 19636 df-ur 19653 df-ring 19700 df-cring 19701 df-oppr 19777 df-dvdsr 19798 df-unit 19799 df-invr 19829 df-dvr 19840 df-drng 19908 df-subrg 19937 df-cnfld 20511 df-zring 20583 |
This theorem is referenced by: zclmncvs 24217 |
Copyright terms: Public domain | W3C validator |