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| Mirrors > Home > ILE Home > Th. List > rngmgp | GIF version | ||
| Description: A non-unital ring is a semigroup under multiplication. (Contributed by AV, 17-Feb-2020.) |
| Ref | Expression |
|---|---|
| rngmgp.g | ⊢ 𝐺 = (mulGrp‘𝑅) |
| Ref | Expression |
|---|---|
| rngmgp | ⊢ (𝑅 ∈ Rng → 𝐺 ∈ Smgrp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2229 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | rngmgp.g | . . 3 ⊢ 𝐺 = (mulGrp‘𝑅) | |
| 3 | eqid 2229 | . . 3 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
| 4 | eqid 2229 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 5 | 1, 2, 3, 4 | isrng 13883 | . 2 ⊢ (𝑅 ∈ Rng ↔ (𝑅 ∈ Abel ∧ 𝐺 ∈ Smgrp ∧ ∀𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)∀𝑧 ∈ (Base‘𝑅)((𝑥(.r‘𝑅)(𝑦(+g‘𝑅)𝑧)) = ((𝑥(.r‘𝑅)𝑦)(+g‘𝑅)(𝑥(.r‘𝑅)𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦)(.r‘𝑅)𝑧) = ((𝑥(.r‘𝑅)𝑧)(+g‘𝑅)(𝑦(.r‘𝑅)𝑧))))) |
| 6 | 5 | simp2bi 1037 | 1 ⊢ (𝑅 ∈ Rng → 𝐺 ∈ Smgrp) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1395 ∈ wcel 2200 ∀wral 2508 ‘cfv 5314 (class class class)co 5994 Basecbs 13018 +gcplusg 13096 .rcmulr 13097 Smgrpcsgrp 13420 Abelcabl 13808 mulGrpcmgp 13869 Rngcrng 13881 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4201 ax-pow 4257 ax-pr 4292 ax-un 4521 ax-cnex 8078 ax-resscn 8079 ax-1re 8081 ax-addrcl 8084 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-sbc 3029 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-int 3923 df-br 4083 df-opab 4145 df-mpt 4146 df-id 4381 df-xp 4722 df-rel 4723 df-cnv 4724 df-co 4725 df-dm 4726 df-rn 4727 df-res 4728 df-iota 5274 df-fun 5316 df-fn 5317 df-fv 5322 df-ov 5997 df-inn 9099 df-2 9157 df-3 9158 df-ndx 13021 df-slot 13022 df-base 13024 df-plusg 13109 df-mulr 13110 df-rng 13882 |
| This theorem is referenced by: rngmgpf 13886 rngass 13888 rngcl 13893 rnglidlmsgrp 14446 |
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