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| Mirrors > Home > ILE Home > Th. List > lidlsubg | GIF version | ||
| Description: An ideal is a subgroup of the additive group. (Contributed by Mario Carneiro, 14-Jun-2015.) |
| Ref | Expression |
|---|---|
| lidlcl.u | ⊢ 𝑈 = (LIdeal‘𝑅) |
| Ref | Expression |
|---|---|
| lidlsubg | ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → 𝐼 ∈ (SubGrp‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2234 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | lidlcl.u | . . . 4 ⊢ 𝑈 = (LIdeal‘𝑅) | |
| 3 | 1, 2 | lidlss 14753 | . . 3 ⊢ (𝐼 ∈ 𝑈 → 𝐼 ⊆ (Base‘𝑅)) |
| 4 | 3 | adantl 277 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → 𝐼 ⊆ (Base‘𝑅)) |
| 5 | eqid 2234 | . . . 4 ⊢ (0g‘𝑅) = (0g‘𝑅) | |
| 6 | 2, 5 | lidl0cl 14760 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → (0g‘𝑅) ∈ 𝐼) |
| 7 | elex2 2832 | . . 3 ⊢ ((0g‘𝑅) ∈ 𝐼 → ∃𝑗 𝑗 ∈ 𝐼) | |
| 8 | 6, 7 | syl 14 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → ∃𝑗 𝑗 ∈ 𝐼) |
| 9 | eqid 2234 | . . . . . . 7 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
| 10 | 2, 9 | lidlacl 14761 | . . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ (𝑥 ∈ 𝐼 ∧ 𝑦 ∈ 𝐼)) → (𝑥(+g‘𝑅)𝑦) ∈ 𝐼) |
| 11 | 10 | anassrs 400 | . . . . 5 ⊢ ((((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ 𝐼) ∧ 𝑦 ∈ 𝐼) → (𝑥(+g‘𝑅)𝑦) ∈ 𝐼) |
| 12 | 11 | ralrimiva 2617 | . . . 4 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ 𝐼) → ∀𝑦 ∈ 𝐼 (𝑥(+g‘𝑅)𝑦) ∈ 𝐼) |
| 13 | eqid 2234 | . . . . . 6 ⊢ (invg‘𝑅) = (invg‘𝑅) | |
| 14 | 2, 13 | lidlnegcl 14762 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈 ∧ 𝑥 ∈ 𝐼) → ((invg‘𝑅)‘𝑥) ∈ 𝐼) |
| 15 | 14 | 3expa 1230 | . . . 4 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ 𝐼) → ((invg‘𝑅)‘𝑥) ∈ 𝐼) |
| 16 | 12, 15 | jca 306 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ 𝐼) → (∀𝑦 ∈ 𝐼 (𝑥(+g‘𝑅)𝑦) ∈ 𝐼 ∧ ((invg‘𝑅)‘𝑥) ∈ 𝐼)) |
| 17 | 16 | ralrimiva 2617 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → ∀𝑥 ∈ 𝐼 (∀𝑦 ∈ 𝐼 (𝑥(+g‘𝑅)𝑦) ∈ 𝐼 ∧ ((invg‘𝑅)‘𝑥) ∈ 𝐼)) |
| 18 | ringgrp 14247 | . . . 4 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp) | |
| 19 | 18 | adantr 276 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → 𝑅 ∈ Grp) |
| 20 | 1, 9, 13 | issubg2m 13945 | . . 3 ⊢ (𝑅 ∈ Grp → (𝐼 ∈ (SubGrp‘𝑅) ↔ (𝐼 ⊆ (Base‘𝑅) ∧ ∃𝑗 𝑗 ∈ 𝐼 ∧ ∀𝑥 ∈ 𝐼 (∀𝑦 ∈ 𝐼 (𝑥(+g‘𝑅)𝑦) ∈ 𝐼 ∧ ((invg‘𝑅)‘𝑥) ∈ 𝐼)))) |
| 21 | 19, 20 | syl 14 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → (𝐼 ∈ (SubGrp‘𝑅) ↔ (𝐼 ⊆ (Base‘𝑅) ∧ ∃𝑗 𝑗 ∈ 𝐼 ∧ ∀𝑥 ∈ 𝐼 (∀𝑦 ∈ 𝐼 (𝑥(+g‘𝑅)𝑦) ∈ 𝐼 ∧ ((invg‘𝑅)‘𝑥) ∈ 𝐼)))) |
| 22 | 4, 8, 17, 21 | mpbir3and 1207 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → 𝐼 ∈ (SubGrp‘𝑅)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∧ w3a 1005 = wceq 1398 ∃wex 1541 ∈ wcel 2205 ∀wral 2522 ⊆ wss 3214 ‘cfv 5357 (class class class)co 6058 Basecbs 13299 +gcplusg 13377 0gc0g 13556 Grpcgrp 13758 invgcminusg 13759 SubGrpcsubg 13923 Ringcrg 14242 LIdealclidl 14744 |
| 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-in1 619 ax-in2 620 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-coll 4230 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-ltirr 8255 ax-pre-lttrn 8257 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 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-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-inn 9258 df-2 9316 df-3 9317 df-4 9318 df-5 9319 df-6 9320 df-7 9321 df-8 9322 df-ndx 13302 df-slot 13303 df-base 13305 df-sets 13306 df-iress 13307 df-plusg 13390 df-mulr 13391 df-sca 13393 df-vsca 13394 df-ip 13395 df-0g 13558 df-mgm 13622 df-sgrp 13668 df-mnd 13681 df-grp 13761 df-minusg 13762 df-sbg 13763 df-subg 13926 df-mgp 14163 df-ur 14206 df-ring 14244 df-subrg 14468 df-lmod 14566 df-lssm 14630 df-sra 14712 df-rgmod 14713 df-lidl 14746 |
| This theorem is referenced by: lidlsubcl 14764 dflidl2 14765 df2idl2 14786 2idlcpbl 14801 qus1 14803 qusrhm 14805 qusmul2 14806 quscrng 14810 zndvds 14926 |
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