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Theorem cntzsubr 20559

Description: Centralizers in a ring are subrings. (Contributed by Stefan O'Rear, 6-Sep-2015.) (Revised by Mario Carneiro, 19-Apr-2016.)

**Hypotheses**
Ref	Expression
cntzsubr.b	⊢ 𝐵 = (Base‘𝑅)
cntzsubr.m	⊢ 𝑀 = (mulGrp‘𝑅)
cntzsubr.z	⊢ 𝑍 = (Cntz‘𝑀)

**Assertion**
Ref	Expression
cntzsubr	⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubRing‘𝑅))

Proof of Theorem cntzsubr Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cntzsubr.m	. . . . . 6 ⊢ 𝑀 = (mulGrp‘𝑅)
2		cntzsubr.b	. . . . . 6 ⊢ 𝐵 = (Base‘𝑅)
3	1, 2	mgpbas 20094	. . . . 5 ⊢ 𝐵 = (Base‘𝑀)
4		cntzsubr.z	. . . . 5 ⊢ 𝑍 = (Cntz‘𝑀)
5	3, 4	cntzssv 19293	. . . 4 ⊢ (𝑍‘𝑆) ⊆ 𝐵
6	5	a1i 11	. . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ⊆ 𝐵)
7		simpll 765	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → 𝑅 ∈ Ring)
8		ssel2 3977	. . . . . . . . 9 ⊢ ((𝑆 ⊆ 𝐵 ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
9	8	adantll 712	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
10		eqid 2728	. . . . . . . . 9 ⊢ (._r‘𝑅) = (._r‘𝑅)
11		eqid 2728	. . . . . . . . 9 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
12	2, 10, 11	ringlz 20243	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑧 ∈ 𝐵) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (0_g‘𝑅))
13	7, 9, 12	syl2anc 582	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (0_g‘𝑅))
14	2, 10, 11	ringrz 20244	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑧 ∈ 𝐵) → (𝑧(._r‘𝑅)(0_g‘𝑅)) = (0_g‘𝑅))
15	7, 9, 14	syl2anc 582	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → (𝑧(._r‘𝑅)(0_g‘𝑅)) = (0_g‘𝑅))
16	13, 15	eqtr4d 2771	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅)))
17	16	ralrimiva 3143	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ∀𝑧 ∈ 𝑆 ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅)))
18		simpr 483	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → 𝑆 ⊆ 𝐵)
19	2, 11	ring0cl 20217	. . . . . . 7 ⊢ (𝑅 ∈ Ring → (0_g‘𝑅) ∈ 𝐵)
20	19	adantr 479	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (0_g‘𝑅) ∈ 𝐵)
21	1, 10	mgpplusg 20092	. . . . . . 7 ⊢ (._r‘𝑅) = (+_g‘𝑀)
22	3, 21, 4	cntzel 19288	. . . . . 6 ⊢ ((𝑆 ⊆ 𝐵 ∧ (0_g‘𝑅) ∈ 𝐵) → ((0_g‘𝑅) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅))))
23	18, 20, 22	syl2anc 582	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ((0_g‘𝑅) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅))))
24	17, 23	mpbird 256	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (0_g‘𝑅) ∈ (𝑍‘𝑆))
25	24	ne0d 4339	. . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ≠ ∅)
26		simpl2 1189	. . . . . . . . . . . 12 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ (𝑍‘𝑆))
27		simpr 483	. . . . . . . . . . . 12 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝑆)
28	21, 4	cntzi 19294	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ (𝑍‘𝑆) ∧ 𝑧 ∈ 𝑆) → (𝑥(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑥))
29	26, 27, 28	syl2anc 582	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑥(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑥))
30		simpl3 1190	. . . . . . . . . . . 12 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑦 ∈ (𝑍‘𝑆))
31	21, 4	cntzi 19294	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ (𝑍‘𝑆) ∧ 𝑧 ∈ 𝑆) → (𝑦(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑦))
32	30, 27, 31	syl2anc 582	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑦(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑦))
33	29, 32	oveq12d 7444	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → ((𝑥(._r‘𝑅)𝑧)(+_g‘𝑅)(𝑦(._r‘𝑅)𝑧)) = ((𝑧(._r‘𝑅)𝑥)(+_g‘𝑅)(𝑧(._r‘𝑅)𝑦)))
34		simpl1l 1221	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑅 ∈ Ring)
35	5, 26	sselid 3980	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ 𝐵)
36	5, 30	sselid 3980	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑦 ∈ 𝐵)
37		simp1r 1195	. . . . . . . . . . . 12 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑆 ⊆ 𝐵)
38	37	sselda 3982	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
39		eqid 2728	. . . . . . . . . . . 12 ⊢ (+_g‘𝑅) = (+_g‘𝑅)
40	2, 39, 10	ringdir 20215	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = ((𝑥(._r‘𝑅)𝑧)(+_g‘𝑅)(𝑦(._r‘𝑅)𝑧)))
41	34, 35, 36, 38, 40	syl13anc 1369	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = ((𝑥(._r‘𝑅)𝑧)(+_g‘𝑅)(𝑦(._r‘𝑅)𝑧)))
42	2, 39, 10	ringdi 20214	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ (𝑧 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦)) = ((𝑧(._r‘𝑅)𝑥)(+_g‘𝑅)(𝑧(._r‘𝑅)𝑦)))
43	34, 38, 35, 36, 42	syl13anc 1369	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦)) = ((𝑧(._r‘𝑅)𝑥)(+_g‘𝑅)(𝑧(._r‘𝑅)𝑦)))
44	33, 41, 43	3eqtr4d 2778	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦)))
45	44	ralrimiva 3143	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → ∀𝑧 ∈ 𝑆 ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦)))
46		simp1l 1194	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑅 ∈ Ring)
47		simp2 1134	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑥 ∈ (𝑍‘𝑆))
48	5, 47	sselid 3980	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑥 ∈ 𝐵)
49		simp3 1135	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑦 ∈ (𝑍‘𝑆))
50	5, 49	sselid 3980	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑦 ∈ 𝐵)
51	2, 39	ringacl 20228	. . . . . . . . . 10 ⊢ ((𝑅 ∈ Ring ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥(+_g‘𝑅)𝑦) ∈ 𝐵)
52	46, 48, 50, 51	syl3anc 1368	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → (𝑥(+_g‘𝑅)𝑦) ∈ 𝐵)
53	3, 21, 4	cntzel 19288	. . . . . . . . 9 ⊢ ((𝑆 ⊆ 𝐵 ∧ (𝑥(+_g‘𝑅)𝑦) ∈ 𝐵) → ((𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦))))
54	37, 52, 53	syl2anc 582	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → ((𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 ((𝑥(+_g‘𝑅)𝑦)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(𝑥(+_g‘𝑅)𝑦))))
55	45, 54	mpbird 256	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → (𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆))
56	55	3expa 1115	. . . . . 6 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑦 ∈ (𝑍‘𝑆)) → (𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆))
57	56	ralrimiva 3143	. . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆))
58	28	adantll 712	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑥(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑥))
59	58	fveq2d 6906	. . . . . . . 8 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → ((inv_g‘𝑅)‘(𝑥(._r‘𝑅)𝑧)) = ((inv_g‘𝑅)‘(𝑧(._r‘𝑅)𝑥)))
60		eqid 2728	. . . . . . . . 9 ⊢ (inv_g‘𝑅) = (inv_g‘𝑅)
61		simplll 773	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑅 ∈ Ring)
62		simplr 767	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ (𝑍‘𝑆))
63	5, 62	sselid 3980	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ 𝐵)
64		simplr 767	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑆 ⊆ 𝐵)
65	64	sselda 3982	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
66	2, 10, 60, 61, 63, 65	ringmneg1 20254	. . . . . . . 8 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (((inv_g‘𝑅)‘𝑥)(._r‘𝑅)𝑧) = ((inv_g‘𝑅)‘(𝑥(._r‘𝑅)𝑧)))
67	2, 10, 60, 61, 65, 63	ringmneg2 20255	. . . . . . . 8 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑧(._r‘𝑅)((inv_g‘𝑅)‘𝑥)) = ((inv_g‘𝑅)‘(𝑧(._r‘𝑅)𝑥)))
68	59, 66, 67	3eqtr4d 2778	. . . . . . 7 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (((inv_g‘𝑅)‘𝑥)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)((inv_g‘𝑅)‘𝑥)))
69	68	ralrimiva 3143	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ∀𝑧 ∈ 𝑆 (((inv_g‘𝑅)‘𝑥)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)((inv_g‘𝑅)‘𝑥)))
70		ringgrp 20192	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
71	70	ad2antrr 724	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑅 ∈ Grp)
72		simpr 483	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑥 ∈ (𝑍‘𝑆))
73	5, 72	sselid 3980	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑥 ∈ 𝐵)
74	2, 60	grpinvcl 18958	. . . . . . . 8 ⊢ ((𝑅 ∈ Grp ∧ 𝑥 ∈ 𝐵) → ((inv_g‘𝑅)‘𝑥) ∈ 𝐵)
75	71, 73, 74	syl2anc 582	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ((inv_g‘𝑅)‘𝑥) ∈ 𝐵)
76	3, 21, 4	cntzel 19288	. . . . . . 7 ⊢ ((𝑆 ⊆ 𝐵 ∧ ((inv_g‘𝑅)‘𝑥) ∈ 𝐵) → (((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 (((inv_g‘𝑅)‘𝑥)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)((inv_g‘𝑅)‘𝑥))))
77	64, 75, 76	syl2anc 582	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → (((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆) ↔ ∀𝑧 ∈ 𝑆 (((inv_g‘𝑅)‘𝑥)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)((inv_g‘𝑅)‘𝑥))))
78	69, 77	mpbird 256	. . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆))
79	57, 78	jca 510	. . . 4 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → (∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ∧ ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆)))
80	79	ralrimiva 3143	. . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ∀𝑥 ∈ (𝑍‘𝑆)(∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ∧ ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆)))
81	70	adantr 479	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → 𝑅 ∈ Grp)
82	2, 39, 60	issubg2 19110	. . . 4 ⊢ (𝑅 ∈ Grp → ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ↔ ((𝑍‘𝑆) ⊆ 𝐵 ∧ (𝑍‘𝑆) ≠ ∅ ∧ ∀𝑥 ∈ (𝑍‘𝑆)(∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ∧ ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆)))))
83	81, 82	syl 17	. . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ↔ ((𝑍‘𝑆) ⊆ 𝐵 ∧ (𝑍‘𝑆) ≠ ∅ ∧ ∀𝑥 ∈ (𝑍‘𝑆)(∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆) ∧ ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆)))))
84	6, 25, 80, 83	mpbir3and 1339	. 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubGrp‘𝑅))
85	1	ringmgp 20193	. . 3 ⊢ (𝑅 ∈ Ring → 𝑀 ∈ Mnd)
86	3, 4	cntzsubm 19303	. . 3 ⊢ ((𝑀 ∈ Mnd ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubMnd‘𝑀))
87	85, 86	sylan 578	. 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubMnd‘𝑀))
88	1	issubrg3 20553	. . 3 ⊢ (𝑅 ∈ Ring → ((𝑍‘𝑆) ∈ (SubRing‘𝑅) ↔ ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ∧ (𝑍‘𝑆) ∈ (SubMnd‘𝑀))))
89	88	adantr 479	. 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ((𝑍‘𝑆) ∈ (SubRing‘𝑅) ↔ ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ∧ (𝑍‘𝑆) ∈ (SubMnd‘𝑀))))
90	84, 87, 89	mpbir2and 711	1 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubRing‘𝑅))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2937 ∀wral 3058 ⊆ wss 3949 ∅c0 4326 ‘cfv 6553 (class class class)co 7426 Basecbs 17189 +_gcplusg 17242 ._rcmulr 17243 0_gc0g 17430 Mndcmnd 18703 SubMndcsubmnd 18748 Grpcgrp 18904 inv_gcminusg 18905 SubGrpcsubg 19089 Cntzccntz 19280 mulGrpcmgp 20088 Ringcrg 20187 SubRingcsubrg 20520

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2699 ax-rep 5289 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7748 ax-cnex 11204 ax-resscn 11205 ax-1cn 11206 ax-icn 11207 ax-addcl 11208 ax-addrcl 11209 ax-mulcl 11210 ax-mulrcl 11211 ax-mulcom 11212 ax-addass 11213 ax-mulass 11214 ax-distr 11215 ax-i2m1 11216 ax-1ne0 11217 ax-1rid 11218 ax-rnegex 11219 ax-rrecex 11220 ax-cnre 11221 ax-pre-lttri 11222 ax-pre-lttrn 11223 ax-pre-ltadd 11224 ax-pre-mulgt0 11225

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-op 4639 df-uni 4913 df-iun 5002 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-om 7879 df-2nd 8002 df-frecs 8295 df-wrecs 8326 df-recs 8400 df-rdg 8439 df-er 8733 df-en 8973 df-dom 8974 df-sdom 8975 df-pnf 11290 df-mnf 11291 df-xr 11292 df-ltxr 11293 df-le 11294 df-sub 11486 df-neg 11487 df-nn 12253 df-2 12315 df-3 12316 df-sets 17142 df-slot 17160 df-ndx 17172 df-base 17190 df-ress 17219 df-plusg 17255 df-mulr 17256 df-0g 17432 df-mgm 18609 df-sgrp 18688 df-mnd 18704 df-submnd 18750 df-grp 18907 df-minusg 18908 df-subg 19092 df-cntz 19282 df-cmn 19751 df-abl 19752 df-mgp 20089 df-rng 20107 df-ur 20136 df-ring 20189 df-subrng 20497 df-subrg 20522

This theorem is referenced by: cntzsdrg 20704 cntrcrng 32805

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