Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > isringrng | Structured version Visualization version GIF version |
Description: The predicate "is a unital ring" as extension of the predicate "is a non-unital ring". (Contributed by AV, 17-Feb-2020.) |
Ref | Expression |
---|---|
isringrng.b | ⊢ 𝐵 = (Base‘𝑅) |
isringrng.t | ⊢ · = (.r‘𝑅) |
Ref | Expression |
---|---|
isringrng | ⊢ (𝑅 ∈ Ring ↔ (𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ringrng 45325 | . . 3 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Rng) | |
2 | isringrng.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑅) | |
3 | isringrng.t | . . . . 5 ⊢ · = (.r‘𝑅) | |
4 | 2, 3 | ringideu 19719 | . . . 4 ⊢ (𝑅 ∈ Ring → ∃!𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) |
5 | reurex 3352 | . . . 4 ⊢ (∃!𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦) → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) | |
6 | 4, 5 | syl 17 | . . 3 ⊢ (𝑅 ∈ Ring → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) |
7 | 1, 6 | jca 511 | . 2 ⊢ (𝑅 ∈ Ring → (𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
8 | rngabl 45323 | . . . . 5 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Abel) | |
9 | ablgrp 19306 | . . . . 5 ⊢ (𝑅 ∈ Abel → 𝑅 ∈ Grp) | |
10 | 8, 9 | syl 17 | . . . 4 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Grp) |
11 | 10 | adantr 480 | . . 3 ⊢ ((𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) → 𝑅 ∈ Grp) |
12 | eqid 2738 | . . . . . 6 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
13 | 12 | rngmgp 45324 | . . . . 5 ⊢ (𝑅 ∈ Rng → (mulGrp‘𝑅) ∈ Smgrp) |
14 | 13 | anim1i 614 | . . . 4 ⊢ ((𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) → ((mulGrp‘𝑅) ∈ Smgrp ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
15 | 12, 2 | mgpbas 19641 | . . . . 5 ⊢ 𝐵 = (Base‘(mulGrp‘𝑅)) |
16 | 12, 3 | mgpplusg 19639 | . . . . 5 ⊢ · = (+g‘(mulGrp‘𝑅)) |
17 | 15, 16 | ismnddef 18302 | . . . 4 ⊢ ((mulGrp‘𝑅) ∈ Mnd ↔ ((mulGrp‘𝑅) ∈ Smgrp ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
18 | 14, 17 | sylibr 233 | . . 3 ⊢ ((𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) → (mulGrp‘𝑅) ∈ Mnd) |
19 | eqid 2738 | . . . . . 6 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
20 | 2, 12, 19, 3 | isrng 45322 | . . . . 5 ⊢ (𝑅 ∈ Rng ↔ (𝑅 ∈ Abel ∧ (mulGrp‘𝑅) ∈ Smgrp ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ((𝑥 · (𝑦(+g‘𝑅)𝑧)) = ((𝑥 · 𝑦)(+g‘𝑅)(𝑥 · 𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦) · 𝑧) = ((𝑥 · 𝑧)(+g‘𝑅)(𝑦 · 𝑧))))) |
21 | 20 | simp3bi 1145 | . . . 4 ⊢ (𝑅 ∈ Rng → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ((𝑥 · (𝑦(+g‘𝑅)𝑧)) = ((𝑥 · 𝑦)(+g‘𝑅)(𝑥 · 𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦) · 𝑧) = ((𝑥 · 𝑧)(+g‘𝑅)(𝑦 · 𝑧)))) |
22 | 21 | adantr 480 | . . 3 ⊢ ((𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ((𝑥 · (𝑦(+g‘𝑅)𝑧)) = ((𝑥 · 𝑦)(+g‘𝑅)(𝑥 · 𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦) · 𝑧) = ((𝑥 · 𝑧)(+g‘𝑅)(𝑦 · 𝑧)))) |
23 | 2, 12, 19, 3 | isring 19702 | . . 3 ⊢ (𝑅 ∈ Ring ↔ (𝑅 ∈ Grp ∧ (mulGrp‘𝑅) ∈ Mnd ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ((𝑥 · (𝑦(+g‘𝑅)𝑧)) = ((𝑥 · 𝑦)(+g‘𝑅)(𝑥 · 𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦) · 𝑧) = ((𝑥 · 𝑧)(+g‘𝑅)(𝑦 · 𝑧))))) |
24 | 11, 18, 22, 23 | syl3anbrc 1341 | . 2 ⊢ ((𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) → 𝑅 ∈ Ring) |
25 | 7, 24 | impbii 208 | 1 ⊢ (𝑅 ∈ Ring ↔ (𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∀wral 3063 ∃wrex 3064 ∃!wreu 3065 ‘cfv 6418 (class class class)co 7255 Basecbs 16840 +gcplusg 16888 .rcmulr 16889 Smgrpcsgrp 18289 Mndcmnd 18300 Grpcgrp 18492 Abelcabl 19302 mulGrpcmgp 19635 Ringcrg 19698 Rngcrng 45320 |
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-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 |
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-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-plusg 16901 df-0g 17069 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-grp 18495 df-minusg 18496 df-cmn 19303 df-abl 19304 df-mgp 19636 df-ur 19653 df-ring 19700 df-rng0 45321 |
This theorem is referenced by: zlidlring 45374 uzlidlring 45375 |
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