| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > rng2idlsubgsubrng | GIF version | ||
| Description: A two-sided ideal of a non-unital ring which is a subgroup of the ring is a subring of the ring. (Contributed by AV, 11-Mar-2025.) |
| Ref | Expression |
|---|---|
| rng2idlsubgsubrng.r | ⊢ (𝜑 → 𝑅 ∈ Rng) |
| rng2idlsubgsubrng.i | ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) |
| rng2idlsubgsubrng.u | ⊢ (𝜑 → 𝐼 ∈ (SubGrp‘𝑅)) |
| Ref | Expression |
|---|---|
| rng2idlsubgsubrng | ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rng2idlsubgsubrng.r | . 2 ⊢ (𝜑 → 𝑅 ∈ Rng) | |
| 2 | rng2idlsubgsubrng.i | . 2 ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) | |
| 3 | eqid 2231 | . . . . . 6 ⊢ (LIdeal‘𝑅) = (LIdeal‘𝑅) | |
| 4 | eqid 2231 | . . . . . 6 ⊢ (oppr‘𝑅) = (oppr‘𝑅) | |
| 5 | eqid 2231 | . . . . . 6 ⊢ (LIdeal‘(oppr‘𝑅)) = (LIdeal‘(oppr‘𝑅)) | |
| 6 | eqid 2231 | . . . . . 6 ⊢ (2Ideal‘𝑅) = (2Ideal‘𝑅) | |
| 7 | 3, 4, 5, 6 | 2idlelb 14522 | . . . . 5 ⊢ (𝐼 ∈ (2Ideal‘𝑅) ↔ (𝐼 ∈ (LIdeal‘𝑅) ∧ 𝐼 ∈ (LIdeal‘(oppr‘𝑅)))) |
| 8 | 7 | simplbi 274 | . . . 4 ⊢ (𝐼 ∈ (2Ideal‘𝑅) → 𝐼 ∈ (LIdeal‘𝑅)) |
| 9 | 2, 8 | syl 14 | . . 3 ⊢ (𝜑 → 𝐼 ∈ (LIdeal‘𝑅)) |
| 10 | rng2idlsubgsubrng.u | . . 3 ⊢ (𝜑 → 𝐼 ∈ (SubGrp‘𝑅)) | |
| 11 | eqid 2231 | . . . 4 ⊢ (𝑅 ↾s 𝐼) = (𝑅 ↾s 𝐼) | |
| 12 | 3, 11 | rnglidlrng 14515 | . . 3 ⊢ ((𝑅 ∈ Rng ∧ 𝐼 ∈ (LIdeal‘𝑅) ∧ 𝐼 ∈ (SubGrp‘𝑅)) → (𝑅 ↾s 𝐼) ∈ Rng) |
| 13 | 1, 9, 10, 12 | syl3anc 1273 | . 2 ⊢ (𝜑 → (𝑅 ↾s 𝐼) ∈ Rng) |
| 14 | 1, 2, 13 | rng2idlsubrng 14534 | 1 ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 ‘cfv 5326 (class class class)co 6018 ↾s cress 13085 SubGrpcsubg 13756 Rngcrng 13948 opprcoppr 14083 SubRngcsubrng 14214 LIdealclidl 14484 2Idealc2idl 14516 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-addcom 8132 ax-addass 8134 ax-i2m1 8137 ax-0lt1 8138 ax-0id 8140 ax-rnegex 8141 ax-pre-ltirr 8144 ax-pre-lttrn 8146 ax-pre-ltadd 8148 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-riota 5971 df-ov 6021 df-oprab 6022 df-mpo 6023 df-pnf 8216 df-mnf 8217 df-ltxr 8219 df-inn 9144 df-2 9202 df-3 9203 df-4 9204 df-5 9205 df-6 9206 df-7 9207 df-8 9208 df-ndx 13087 df-slot 13088 df-base 13090 df-sets 13091 df-iress 13092 df-plusg 13175 df-mulr 13176 df-sca 13178 df-vsca 13179 df-ip 13180 df-0g 13343 df-mgm 13441 df-sgrp 13487 df-mnd 13502 df-grp 13588 df-subg 13759 df-cmn 13875 df-abl 13876 df-mgp 13937 df-rng 13949 df-subrng 14215 df-lssm 14370 df-sra 14452 df-rgmod 14453 df-lidl 14486 df-2idl 14517 |
| This theorem is referenced by: rng2idlsubgnsg 14538 rng2idlsubg0 14539 |
| Copyright terms: Public domain | W3C validator |