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| Mirrors > Home > ILE Home > Th. List > rng2idlsubrng | GIF version | ||
| Description: A two-sided ideal of a non-unital ring which is a non-unital ring is a subring of the ring. (Contributed by AV, 20-Feb-2025.) (Revised by AV, 11-Mar-2025.) |
| Ref | Expression |
|---|---|
| rng2idlsubrng.r | ⊢ (𝜑 → 𝑅 ∈ Rng) |
| rng2idlsubrng.i | ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) |
| rng2idlsubrng.u | ⊢ (𝜑 → (𝑅 ↾s 𝐼) ∈ Rng) |
| Ref | Expression |
|---|---|
| rng2idlsubrng | ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rng2idlsubrng.r | . 2 ⊢ (𝜑 → 𝑅 ∈ Rng) | |
| 2 | rng2idlsubrng.u | . 2 ⊢ (𝜑 → (𝑅 ↾s 𝐼) ∈ Rng) | |
| 3 | rng2idlsubrng.i | . . 3 ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) | |
| 4 | eqid 2232 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 5 | eqid 2232 | . . . 4 ⊢ (2Ideal‘𝑅) = (2Ideal‘𝑅) | |
| 6 | 4, 5 | 2idlss 14649 | . . 3 ⊢ (𝐼 ∈ (2Ideal‘𝑅) → 𝐼 ⊆ (Base‘𝑅)) |
| 7 | 3, 6 | syl 14 | . 2 ⊢ (𝜑 → 𝐼 ⊆ (Base‘𝑅)) |
| 8 | 4 | issubrng 14333 | . 2 ⊢ (𝐼 ∈ (SubRng‘𝑅) ↔ (𝑅 ∈ Rng ∧ (𝑅 ↾s 𝐼) ∈ Rng ∧ 𝐼 ⊆ (Base‘𝑅))) |
| 9 | 1, 2, 7, 8 | syl3anbrc 1208 | 1 ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2203 ⊆ wss 3210 ‘cfv 5351 (class class class)co 6049 Basecbs 13201 ↾s cress 13202 Rngcrng 14065 SubRngcsubrng 14331 2Idealc2idl 14634 |
| 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 2205 ax-14 2206 ax-ext 2214 ax-coll 4224 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-cnex 8214 ax-resscn 8215 ax-1cn 8216 ax-1re 8217 ax-icn 8218 ax-addcl 8219 ax-addrcl 8220 ax-mulcl 8221 ax-addcom 8223 ax-addass 8225 ax-i2m1 8228 ax-0lt1 8229 ax-0id 8231 ax-rnegex 8232 ax-pre-ltirr 8235 ax-pre-lttrn 8237 ax-pre-ltadd 8239 |
| 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 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-iun 3992 df-br 4109 df-opab 4171 df-mpt 4172 df-id 4413 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-ov 6052 df-oprab 6053 df-mpo 6054 df-pnf 8306 df-mnf 8307 df-ltxr 8309 df-inn 9234 df-2 9292 df-3 9293 df-4 9294 df-5 9295 df-6 9296 df-7 9297 df-8 9298 df-ndx 13204 df-slot 13205 df-base 13207 df-sets 13208 df-iress 13209 df-mulr 13293 df-sca 13295 df-vsca 13296 df-ip 13297 df-subrng 14332 df-lssm 14488 df-sra 14570 df-rgmod 14571 df-lidl 14604 df-2idl 14635 |
| This theorem is referenced by: rng2idlnsg 14653 rng2idl0 14654 rng2idlsubgsubrng 14655 |
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