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| Mirrors > Home > ILE Home > Th. List > rng2idlnsg | GIF version | ||
| Description: A two-sided ideal of a non-unital ring which is a non-unital ring is a normal subgroup of the ring. (Contributed by AV, 20-Feb-2025.) |
| Ref | Expression |
|---|---|
| rng2idlsubrng.r | ⊢ (𝜑 → 𝑅 ∈ Rng) |
| rng2idlsubrng.i | ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) |
| rng2idlsubrng.u | ⊢ (𝜑 → (𝑅 ↾s 𝐼) ∈ Rng) |
| Ref | Expression |
|---|---|
| rng2idlnsg | ⊢ (𝜑 → 𝐼 ∈ (NrmSGrp‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rng2idlsubrng.r | . . 3 ⊢ (𝜑 → 𝑅 ∈ Rng) | |
| 2 | rng2idlsubrng.i | . . 3 ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) | |
| 3 | rng2idlsubrng.u | . . 3 ⊢ (𝜑 → (𝑅 ↾s 𝐼) ∈ Rng) | |
| 4 | 1, 2, 3 | rng2idlsubrng 14446 | . 2 ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| 5 | subrngringnsg 14134 | . 2 ⊢ (𝐼 ∈ (SubRng‘𝑅) → 𝐼 ∈ (NrmSGrp‘𝑅)) | |
| 6 | 4, 5 | syl 14 | 1 ⊢ (𝜑 → 𝐼 ∈ (NrmSGrp‘𝑅)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2180 ‘cfv 5294 (class class class)co 5974 ↾s cress 12999 NrmSGrpcnsg 13671 Rngcrng 13861 SubRngcsubrng 14126 2Idealc2idl 14428 |
| 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 617 ax-in2 618 ax-io 713 ax-5 1473 ax-7 1474 ax-gen 1475 ax-ie1 1519 ax-ie2 1520 ax-8 1530 ax-10 1531 ax-11 1532 ax-i12 1533 ax-bndl 1535 ax-4 1536 ax-17 1552 ax-i9 1556 ax-ial 1560 ax-i5r 1561 ax-13 2182 ax-14 2183 ax-ext 2191 ax-coll 4178 ax-sep 4181 ax-pow 4237 ax-pr 4272 ax-un 4501 ax-setind 4606 ax-cnex 8058 ax-resscn 8059 ax-1cn 8060 ax-1re 8061 ax-icn 8062 ax-addcl 8063 ax-addrcl 8064 ax-mulcl 8065 ax-addcom 8067 ax-addass 8069 ax-i2m1 8072 ax-0lt1 8073 ax-0id 8075 ax-rnegex 8076 ax-pre-ltirr 8079 ax-pre-lttrn 8081 ax-pre-ltadd 8083 |
| This theorem depends on definitions: df-bi 117 df-3an 985 df-tru 1378 df-fal 1381 df-nf 1487 df-sb 1789 df-eu 2060 df-mo 2061 df-clab 2196 df-cleq 2202 df-clel 2205 df-nfc 2341 df-ne 2381 df-nel 2476 df-ral 2493 df-rex 2494 df-reu 2495 df-rab 2497 df-v 2781 df-sbc 3009 df-csb 3105 df-dif 3179 df-un 3181 df-in 3183 df-ss 3190 df-nul 3472 df-pw 3631 df-sn 3652 df-pr 3653 df-op 3655 df-uni 3868 df-int 3903 df-iun 3946 df-br 4063 df-opab 4125 df-mpt 4126 df-id 4361 df-xp 4702 df-rel 4703 df-cnv 4704 df-co 4705 df-dm 4706 df-rn 4707 df-res 4708 df-ima 4709 df-iota 5254 df-fun 5296 df-fn 5297 df-f 5298 df-f1 5299 df-fo 5300 df-f1o 5301 df-fv 5302 df-ov 5977 df-oprab 5978 df-mpo 5979 df-pnf 8151 df-mnf 8152 df-ltxr 8154 df-inn 9079 df-2 9137 df-3 9138 df-4 9139 df-5 9140 df-6 9141 df-7 9142 df-8 9143 df-ndx 13001 df-slot 13002 df-base 13004 df-sets 13005 df-iress 13006 df-plusg 13089 df-mulr 13090 df-sca 13092 df-vsca 13093 df-ip 13094 df-subg 13673 df-nsg 13674 df-cmn 13789 df-abl 13790 df-rng 13862 df-subrng 14127 df-lssm 14282 df-sra 14364 df-rgmod 14365 df-lidl 14398 df-2idl 14429 |
| This theorem is referenced by: (None) |
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