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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 2238 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 5 | eqid 2238 | . . . 4 ⊢ (2Ideal‘𝑅) = (2Ideal‘𝑅) | |
| 6 | 4, 5 | 2idlss 14961 | . . 3 ⊢ (𝐼 ∈ (2Ideal‘𝑅) → 𝐼 ⊆ (Base‘𝑅)) |
| 7 | 3, 6 | syl 14 | . 2 ⊢ (𝜑 → 𝐼 ⊆ (Base‘𝑅)) |
| 8 | 4 | issubrng 14617 | . 2 ⊢ (𝐼 ∈ (SubRng‘𝑅) ↔ (𝑅 ∈ Rng ∧ (𝑅 ↾s 𝐼) ∈ Rng ∧ 𝐼 ⊆ (Base‘𝑅))) |
| 9 | 1, 2, 7, 8 | syl3anbrc 1212 | 1 ⊢ (𝜑 → 𝐼 ∈ (SubRng‘𝑅)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ⊆ wss 3220 ‘cfv 5380 (class class class)co 6088 Basecbs 13411 ↾s cress 13412 Rngcrng 14339 SubRngcsubrng 14615 2Idealc2idl 14946 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-i2m1 8291 ax-0lt1 8292 ax-0id 8294 ax-rnegex 8295 ax-pre-ltirr 8298 ax-pre-lttrn 8300 ax-pre-ltadd 8302 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-pnf 8369 df-mnf 8370 df-ltxr 8372 df-inn 9315 df-2 9373 df-3 9374 df-4 9375 df-5 9376 df-6 9377 df-7 9378 df-8 9379 df-ndx 13414 df-slot 13415 df-base 13417 df-sets 13418 df-iress 13419 df-mulr 13505 df-sca 13507 df-vsca 13508 df-ip 13509 df-subrng 14616 df-lssm 14800 df-sra 14882 df-rgmod 14883 df-lidl 14916 df-2idl 14947 |
| This theorem is used by: rng2idlnsg 14965 rng2idl0 14966 rng2idlsubgsubrng 14967 |
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