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 45415 | . . 3 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Rng) | |
2 | isringrng.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑅) | |
3 | isringrng.t | . . . . 5 ⊢ · = (.r‘𝑅) | |
4 | 2, 3 | ringideu 19814 | . . . 4 ⊢ (𝑅 ∈ Ring → ∃!𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦)) |
5 | reurex 3360 | . . . 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 512 | . 2 ⊢ (𝑅 ∈ Ring → (𝑅 ∈ Rng ∧ ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥 · 𝑦) = 𝑦 ∧ (𝑦 · 𝑥) = 𝑦))) |
8 | rngabl 45413 | . . . . 5 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Abel) | |
9 | ablgrp 19401 | . . . . 5 ⊢ (𝑅 ∈ Abel → 𝑅 ∈ Grp) | |
10 | 8, 9 | syl 17 | . . . 4 ⊢ (𝑅 ∈ Rng → 𝑅 ∈ Grp) |
11 | 10 | adantr 481 | . . 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 45414 | . . . . 5 ⊢ (𝑅 ∈ Rng → (mulGrp‘𝑅) ∈ Smgrp) |
14 | 13 | anim1i 615 | . . . 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 19736 | . . . . 5 ⊢ 𝐵 = (Base‘(mulGrp‘𝑅)) |
16 | 12, 3 | mgpplusg 19734 | . . . . 5 ⊢ · = (+g‘(mulGrp‘𝑅)) |
17 | 15, 16 | ismnddef 18397 | . . . 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 45412 | . . . . 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 1146 | . . . 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 481 | . . 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 19797 | . . 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 1342 | . 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 396 = wceq 1539 ∈ wcel 2106 ∀wral 3064 ∃wrex 3065 ∃!wreu 3066 ‘cfv 6426 (class class class)co 7267 Basecbs 16922 +gcplusg 16972 .rcmulr 16973 Smgrpcsgrp 18384 Mndcmnd 18395 Grpcgrp 18587 Abelcabl 19397 mulGrpcmgp 19730 Ringcrg 19793 Rngcrng 45410 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5221 ax-nul 5228 ax-pow 5286 ax-pr 5350 ax-un 7578 ax-cnex 10937 ax-resscn 10938 ax-1cn 10939 ax-icn 10940 ax-addcl 10941 ax-addrcl 10942 ax-mulcl 10943 ax-mulrcl 10944 ax-mulcom 10945 ax-addass 10946 ax-mulass 10947 ax-distr 10948 ax-i2m1 10949 ax-1ne0 10950 ax-1rid 10951 ax-rnegex 10952 ax-rrecex 10953 ax-cnre 10954 ax-pre-lttri 10955 ax-pre-lttrn 10956 ax-pre-ltadd 10957 ax-pre-mulgt0 10958 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3071 df-rmo 3072 df-rab 3073 df-v 3431 df-sbc 3716 df-csb 3832 df-dif 3889 df-un 3891 df-in 3893 df-ss 3903 df-pss 3905 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5074 df-opab 5136 df-mpt 5157 df-tr 5191 df-id 5484 df-eprel 5490 df-po 5498 df-so 5499 df-fr 5539 df-we 5541 df-xp 5590 df-rel 5591 df-cnv 5592 df-co 5593 df-dm 5594 df-rn 5595 df-res 5596 df-ima 5597 df-pred 6195 df-ord 6262 df-on 6263 df-lim 6264 df-suc 6265 df-iota 6384 df-fun 6428 df-fn 6429 df-f 6430 df-f1 6431 df-fo 6432 df-f1o 6433 df-fv 6434 df-riota 7224 df-ov 7270 df-oprab 7271 df-mpo 7272 df-om 7703 df-2nd 7821 df-frecs 8084 df-wrecs 8115 df-recs 8189 df-rdg 8228 df-er 8485 df-en 8721 df-dom 8722 df-sdom 8723 df-pnf 11021 df-mnf 11022 df-xr 11023 df-ltxr 11024 df-le 11025 df-sub 11217 df-neg 11218 df-nn 11984 df-2 12046 df-sets 16875 df-slot 16893 df-ndx 16905 df-base 16923 df-plusg 16985 df-0g 17162 df-mgm 18336 df-sgrp 18385 df-mnd 18396 df-grp 18590 df-minusg 18591 df-cmn 19398 df-abl 19399 df-mgp 19731 df-ur 19748 df-ring 19795 df-rng0 45411 |
This theorem is referenced by: zlidlring 45464 uzlidlring 45465 |
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