Theorem idlinsubrg 32544

Description: The intersection between an ideal and a subring is an ideal of the subring. (Contributed by Thierry Arnoux, 6-Jul-2024.)

Hypotheses

Ref	Expression
idlinsubrg.s	⊢ 𝑆 = (𝑅 ↾s 𝐴)
idlinsubrg.u	⊢ 𝑈 = (LIdeal‘𝑅)
idlinsubrg.v	⊢ 𝑉 = (LIdeal‘𝑆)

Assertion

Ref	Expression
idlinsubrg	⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (𝐼 ∩ 𝐴) ∈ 𝑉)

Proof of Theorem idlinsubrg

Dummy variables 𝑎 𝑏 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		inss2 4229	. . . 4 ⊢ (𝐼 ∩ 𝐴) ⊆ 𝐴
2		idlinsubrg.s	. . . . 5 ⊢ 𝑆 = (𝑅 ↾s 𝐴)
3	2	subrgbas 20327	. . . 4 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘𝑆))
4	1, 3	sseqtrid 4034	. . 3 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝐼 ∩ 𝐴) ⊆ (Base‘𝑆))
5	4	adantr 481	. 2 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (𝐼 ∩ 𝐴) ⊆ (Base‘𝑆))
6		subrgrcl 20323	. . . . 5 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝑅 ∈ Ring)
7		idlinsubrg.u	. . . . . 6 ⊢ 𝑈 = (LIdeal‘𝑅)
8		eqid 2732	. . . . . 6 ⊢ (0g‘𝑅) = (0g‘𝑅)
9	7, 8	lidl0cl 20834	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) → (0g‘𝑅) ∈ 𝐼)
10	6, 9	sylan 580	. . . 4 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (0g‘𝑅) ∈ 𝐼)
11		subrgsubg 20324	. . . . . 6 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ∈ (SubGrp‘𝑅))
12		subgsubm 19027	. . . . . 6 ⊢ (𝐴 ∈ (SubGrp‘𝑅) → 𝐴 ∈ (SubMnd‘𝑅))
13	8	subm0cl 18691	. . . . . 6 ⊢ (𝐴 ∈ (SubMnd‘𝑅) → (0g‘𝑅) ∈ 𝐴)
14	11, 12, 13	3syl 18	. . . . 5 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (0g‘𝑅) ∈ 𝐴)
15	14	adantr 481	. . . 4 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (0g‘𝑅) ∈ 𝐴)
16	10, 15	elind 4194	. . 3 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (0g‘𝑅) ∈ (𝐼 ∩ 𝐴))
17	16	ne0d 4335	. 2 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (𝐼 ∩ 𝐴) ≠ ∅)
18		eqid 2732	. . . . . . . . 9 ⊢ (+g‘𝑅) = (+g‘𝑅)
19	2, 18	ressplusg 17234	. . . . . . . 8 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (+g‘𝑅) = (+g‘𝑆))
20		eqid 2732	. . . . . . . . . 10 ⊢ (.r‘𝑅) = (.r‘𝑅)
21	2, 20	ressmulr 17251	. . . . . . . . 9 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (.r‘𝑅) = (.r‘𝑆))
22	21	oveqd 7425	. . . . . . . 8 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝑥(.r‘𝑅)𝑎) = (𝑥(.r‘𝑆)𝑎))
23		eqidd 2733	. . . . . . . 8 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝑏 = 𝑏)
24	19, 22, 23	oveq123d 7429	. . . . . . 7 ⊢ (𝐴 ∈ (SubRing‘𝑅) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) = ((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏))
25	24	ad4antr 730	. . . . . 6 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) = ((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏))
26	6	ad4antr 730	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑅 ∈ Ring)
27		simp-4r 782	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝐼 ∈ 𝑈)
28		eqid 2732	. . . . . . . . . . . . . 14 ⊢ (Base‘𝑅) = (Base‘𝑅)
29	28	subrgss 20319	. . . . . . . . . . . . 13 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
30	3, 29	eqsstrrd 4021	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (Base‘𝑆) ⊆ (Base‘𝑅))
31	30	adantr 481	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (Base‘𝑆) ⊆ (Base‘𝑅))
32	31	sselda 3982	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑅))
33	32	ad2antrr 724	. . . . . . . . 9 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑥 ∈ (Base‘𝑅))
34		inss1 4228	. . . . . . . . . . . 12 ⊢ (𝐼 ∩ 𝐴) ⊆ 𝐼
35	34	a1i 11	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → (𝐼 ∩ 𝐴) ⊆ 𝐼)
36	35	sselda 3982	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) → 𝑎 ∈ 𝐼)
37	36	adantr 481	. . . . . . . . 9 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑎 ∈ 𝐼)
38	7, 28, 20	lidlmcl 20839	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑎 ∈ 𝐼)) → (𝑥(.r‘𝑅)𝑎) ∈ 𝐼)
39	26, 27, 33, 37, 38	syl22anc 837	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → (𝑥(.r‘𝑅)𝑎) ∈ 𝐼)
40	34	a1i 11	. . . . . . . . 9 ⊢ ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) → (𝐼 ∩ 𝐴) ⊆ 𝐼)
41	40	sselda 3982	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑏 ∈ 𝐼)
42	7, 18	lidlacl 20835	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ ((𝑥(.r‘𝑅)𝑎) ∈ 𝐼 ∧ 𝑏 ∈ 𝐼)) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) ∈ 𝐼)
43	26, 27, 39, 41, 42	syl22anc 837	. . . . . . 7 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) ∈ 𝐼)
44		simp-4l 781	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝐴 ∈ (SubRing‘𝑅))
45		simpr 485	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
46	3	ad2antrr 724	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝐴 = (Base‘𝑆))
47	45, 46	eleqtrrd 2836	. . . . . . . . . 10 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ 𝐴)
48	47	ad2antrr 724	. . . . . . . . 9 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑥 ∈ 𝐴)
49	1	a1i 11	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → (𝐼 ∩ 𝐴) ⊆ 𝐴)
50	49	sselda 3982	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) → 𝑎 ∈ 𝐴)
51	50	adantr 481	. . . . . . . . 9 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑎 ∈ 𝐴)
52	20	subrgmcl 20330	. . . . . . . . 9 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝑥 ∈ 𝐴 ∧ 𝑎 ∈ 𝐴) → (𝑥(.r‘𝑅)𝑎) ∈ 𝐴)
53	44, 48, 51, 52	syl3anc 1371	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → (𝑥(.r‘𝑅)𝑎) ∈ 𝐴)
54	1	a1i 11	. . . . . . . . 9 ⊢ ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) → (𝐼 ∩ 𝐴) ⊆ 𝐴)
55	54	sselda 3982	. . . . . . . 8 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → 𝑏 ∈ 𝐴)
56	18	subrgacl 20329	. . . . . . . 8 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝑥(.r‘𝑅)𝑎) ∈ 𝐴 ∧ 𝑏 ∈ 𝐴) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) ∈ 𝐴)
57	44, 53, 55, 56	syl3anc 1371	. . . . . . 7 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) ∈ 𝐴)
58	43, 57	elind 4194	. . . . . 6 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → ((𝑥(.r‘𝑅)𝑎)(+g‘𝑅)𝑏) ∈ (𝐼 ∩ 𝐴))
59	25, 58	eqeltrrd 2834	. . . . 5 ⊢ (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼 ∩ 𝐴)) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴)) → ((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏) ∈ (𝐼 ∩ 𝐴))
60	59	anasss 467	. . . 4 ⊢ ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ (𝑎 ∈ (𝐼 ∩ 𝐴) ∧ 𝑏 ∈ (𝐼 ∩ 𝐴))) → ((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏) ∈ (𝐼 ∩ 𝐴))
61	60	ralrimivva 3200	. . 3 ⊢ (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → ∀𝑎 ∈ (𝐼 ∩ 𝐴)∀𝑏 ∈ (𝐼 ∩ 𝐴)((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏) ∈ (𝐼 ∩ 𝐴))
62	61	ralrimiva 3146	. 2 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → ∀𝑥 ∈ (Base‘𝑆)∀𝑎 ∈ (𝐼 ∩ 𝐴)∀𝑏 ∈ (𝐼 ∩ 𝐴)((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏) ∈ (𝐼 ∩ 𝐴))
63		idlinsubrg.v	. . 3 ⊢ 𝑉 = (LIdeal‘𝑆)
64		eqid 2732	. . 3 ⊢ (Base‘𝑆) = (Base‘𝑆)
65		eqid 2732	. . 3 ⊢ (+g‘𝑆) = (+g‘𝑆)
66		eqid 2732	. . 3 ⊢ (.r‘𝑆) = (.r‘𝑆)
67	63, 64, 65, 66	islidl 20833	. 2 ⊢ ((𝐼 ∩ 𝐴) ∈ 𝑉 ↔ ((𝐼 ∩ 𝐴) ⊆ (Base‘𝑆) ∧ (𝐼 ∩ 𝐴) ≠ ∅ ∧ ∀𝑥 ∈ (Base‘𝑆)∀𝑎 ∈ (𝐼 ∩ 𝐴)∀𝑏 ∈ (𝐼 ∩ 𝐴)((𝑥(.r‘𝑆)𝑎)(+g‘𝑆)𝑏) ∈ (𝐼 ∩ 𝐴)))
68	5, 17, 62, 67	syl3anbrc 1343	1 ⊢ ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼 ∈ 𝑈) → (𝐼 ∩ 𝐴) ∈ 𝑉)

Syntax hints:   → wi 4   ∧ wa 396   = wceq 1541   ∈ wcel 2106   ≠ wne 2940  ∀wral 3061   ∩ cin 3947   ⊆ wss 3948  ∅c0 4322  ‘cfv 6543  (class class class)co 7408  Basecbs 17143   ↾_s cress 17172  +_gcplusg 17196  ._rcmulr 17197  0_gc0g 17384  SubMndcsubmnd 18669  SubGrpcsubg 18999  Ringcrg 20055  SubRingcsubrg 20314  LIdealclidl 20782

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2703  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7724  ax-cnex 11165  ax-resscn 11166  ax-1cn 11167  ax-icn 11168  ax-addcl 11169  ax-addrcl 11170  ax-mulcl 11171  ax-mulrcl 11172  ax-mulcom 11173  ax-addass 11174  ax-mulass 11175  ax-distr 11176  ax-i2m1 11177  ax-1ne0 11178  ax-1rid 11179  ax-rnegex 11180  ax-rrecex 11181  ax-cnre 11182  ax-pre-lttri 11183  ax-pre-lttrn 11184  ax-pre-ltadd 11185  ax-pre-mulgt0 11186

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2534  df-eu 2563  df-clab 2710  df-cleq 2724  df-clel 2810  df-nfc 2885  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-rmo 3376  df-reu 3377  df-rab 3433  df-v 3476  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-iun 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-pred 6300  df-ord 6367  df-on 6368  df-lim 6369  df-suc 6370  df-iota 6495  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-riota 7364  df-ov 7411  df-oprab 7412  df-mpo 7413  df-om 7855  df-1st 7974  df-2nd 7975  df-frecs 8265  df-wrecs 8296  df-recs 8370  df-rdg 8409  df-er 8702  df-en 8939  df-dom 8940  df-sdom 8941  df-pnf 11249  df-mnf 11250  df-xr 11251  df-ltxr 11252  df-le 11253  df-sub 11445  df-neg 11446  df-nn 12212  df-2 12274  df-3 12275  df-4 12276  df-5 12277  df-6 12278  df-7 12279  df-8 12280  df-sets 17096  df-slot 17114  df-ndx 17126  df-base 17144  df-ress 17173  df-plusg 17209  df-mulr 17210  df-sca 17212  df-vsca 17213  df-ip 17214  df-0g 17386  df-mgm 18560  df-sgrp 18609  df-mnd 18625  df-submnd 18671  df-grp 18821  df-minusg 18822  df-sbg 18823  df-subg 19002  df-mgp 19987  df-ur 20004  df-ring 20057  df-subrg 20316  df-lmod 20472  df-lss 20542  df-sra 20784  df-rgmod 20785  df-lidl 20786

This theorem is referenced by: (None)