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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 2234 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | rngmgp.g | . . 3 ⊢ 𝐺 = (mulGrp‘𝑅) | |
| 3 | eqid 2234 | . . 3 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
| 4 | eqid 2234 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 5 | 1, 2, 3, 4 | isrng 14178 | . 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 1040 | 1 ⊢ (𝑅 ∈ Rng → 𝐺 ∈ Smgrp) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2205 ∀wral 2522 ‘cfv 5358 (class class class)co 6059 Basecbs 13301 +gcplusg 13379 .rcmulr 13380 Smgrpcsgrp 13669 Abelcabl 14043 mulGrpcmgp 14164 Rngcrng 14176 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4234 ax-pow 4293 ax-pr 4328 ax-un 4560 ax-cnex 8235 ax-resscn 8236 ax-1re 8238 ax-addrcl 8241 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-un 3218 df-in 3220 df-ss 3227 df-pw 3677 df-sn 3701 df-pr 3702 df-op 3704 df-uni 3921 df-int 3956 df-br 4116 df-opab 4178 df-mpt 4179 df-id 4420 df-xp 4761 df-rel 4762 df-cnv 4763 df-co 4764 df-dm 4765 df-rn 4766 df-res 4767 df-iota 5318 df-fun 5360 df-fn 5361 df-fv 5366 df-ov 6062 df-inn 9259 df-2 9317 df-3 9318 df-ndx 13304 df-slot 13305 df-base 13307 df-plusg 13392 df-mulr 13393 df-rng 14177 |
| This theorem is referenced by: rngmgpf 14181 rngass 14183 rngcl 14188 rng1zr 14204 rnglidlmsgrp 14776 |
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