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Theorem cntzsubr 20508

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 20045	. . . . 5 ⊢ 𝐵 = (Base‘𝑀)
4		cntzsubr.z	. . . . 5 ⊢ 𝑍 = (Cntz‘𝑀)
5	3, 4	cntzssv 19244	. . . 4 ⊢ (𝑍‘𝑆) ⊆ 𝐵
6	5	a1i 11	. . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ⊆ 𝐵)
7		simpll 764	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → 𝑅 ∈ Ring)
8		ssel2 3972	. . . . . . . . 9 ⊢ ((𝑆 ⊆ 𝐵 ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
9	8	adantll 711	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
10		eqid 2726	. . . . . . . . 9 ⊢ (._r‘𝑅) = (._r‘𝑅)
11		eqid 2726	. . . . . . . . 9 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
12	2, 10, 11	ringlz 20192	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑧 ∈ 𝐵) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (0_g‘𝑅))
13	7, 9, 12	syl2anc 583	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (0_g‘𝑅))
14	2, 10, 11	ringrz 20193	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝑧 ∈ 𝐵) → (𝑧(._r‘𝑅)(0_g‘𝑅)) = (0_g‘𝑅))
15	7, 9, 14	syl2anc 583	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → (𝑧(._r‘𝑅)(0_g‘𝑅)) = (0_g‘𝑅))
16	13, 15	eqtr4d 2769	. . . . . 6 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑧 ∈ 𝑆) → ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅)))
17	16	ralrimiva 3140	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ∀𝑧 ∈ 𝑆 ((0_g‘𝑅)(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)(0_g‘𝑅)))
18		simpr 484	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → 𝑆 ⊆ 𝐵)
19	2, 11	ring0cl 20166	. . . . . . 7 ⊢ (𝑅 ∈ Ring → (0_g‘𝑅) ∈ 𝐵)
20	19	adantr 480	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (0_g‘𝑅) ∈ 𝐵)
21	1, 10	mgpplusg 20043	. . . . . . 7 ⊢ (._r‘𝑅) = (+_g‘𝑀)
22	3, 21, 4	cntzel 19239	. . . . . 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 583	. . . . 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 257	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (0_g‘𝑅) ∈ (𝑍‘𝑆))
25	24	ne0d 4330	. . 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 484	. . . . . . . . . . . 12 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝑆)
28	21, 4	cntzi 19245	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ (𝑍‘𝑆) ∧ 𝑧 ∈ 𝑆) → (𝑥(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑥))
29	26, 27, 28	syl2anc 583	. . . . . . . . . . 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 19245	. . . . . . . . . . . 12 ⊢ ((𝑦 ∈ (𝑍‘𝑆) ∧ 𝑧 ∈ 𝑆) → (𝑦(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑦))
32	30, 27, 31	syl2anc 583	. . . . . . . . . . 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 7423	. . . . . . . . . 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 3975	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ 𝐵)
36	5, 30	sselid 3975	. . . . . . . . . . 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 3977	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
39		eqid 2726	. . . . . . . . . . . 12 ⊢ (+_g‘𝑅) = (+_g‘𝑅)
40	2, 39, 10	ringdir 20164	. . . . . . . . . . 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 20163	. . . . . . . . . . 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 2776	. . . . . . . . 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 3140	. . . . . . . 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 3975	. . . . . . . . . 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 3975	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆) ∧ 𝑦 ∈ (𝑍‘𝑆)) → 𝑦 ∈ 𝐵)
51	2, 39	ringacl 20177	. . . . . . . . . 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 19239	. . . . . . . . 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 583	. . . . . . . 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 257	. . . . . . 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 3140	. . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ∀𝑦 ∈ (𝑍‘𝑆)(𝑥(+_g‘𝑅)𝑦) ∈ (𝑍‘𝑆))
58	28	adantll 711	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → (𝑥(._r‘𝑅)𝑧) = (𝑧(._r‘𝑅)𝑥))
59	58	fveq2d 6889	. . . . . . . 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 2726	. . . . . . . . 9 ⊢ (inv_g‘𝑅) = (inv_g‘𝑅)
61		simplll 772	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑅 ∈ Ring)
62		simplr 766	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ (𝑍‘𝑆))
63	5, 62	sselid 3975	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑥 ∈ 𝐵)
64		simplr 766	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑆 ⊆ 𝐵)
65	64	sselda 3977	. . . . . . . . 9 ⊢ ((((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) ∧ 𝑧 ∈ 𝑆) → 𝑧 ∈ 𝐵)
66	2, 10, 60, 61, 63, 65	ringmneg1 20203	. . . . . . . 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 20204	. . . . . . . 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 2776	. . . . . . 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 3140	. . . . . 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 20143	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp)
71	70	ad2antrr 723	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑅 ∈ Grp)
72		simpr 484	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑥 ∈ (𝑍‘𝑆))
73	5, 72	sselid 3975	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → 𝑥 ∈ 𝐵)
74	2, 60	grpinvcl 18917	. . . . . . . 8 ⊢ ((𝑅 ∈ Grp ∧ 𝑥 ∈ 𝐵) → ((inv_g‘𝑅)‘𝑥) ∈ 𝐵)
75	71, 73, 74	syl2anc 583	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ((inv_g‘𝑅)‘𝑥) ∈ 𝐵)
76	3, 21, 4	cntzel 19239	. . . . . . 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 583	. . . . . 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 257	. . . . 5 ⊢ (((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) ∧ 𝑥 ∈ (𝑍‘𝑆)) → ((inv_g‘𝑅)‘𝑥) ∈ (𝑍‘𝑆))
79	57, 78	jca 511	. . . 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 3140	. . 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 480	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → 𝑅 ∈ Grp)
82	2, 39, 60	issubg2 19068	. . . 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 20144	. . 3 ⊢ (𝑅 ∈ Ring → 𝑀 ∈ Mnd)
86	3, 4	cntzsubm 19254	. . 3 ⊢ ((𝑀 ∈ Mnd ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubMnd‘𝑀))
87	85, 86	sylan 579	. 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubMnd‘𝑀))
88	1	issubrg3 20502	. . 3 ⊢ (𝑅 ∈ Ring → ((𝑍‘𝑆) ∈ (SubRing‘𝑅) ↔ ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ∧ (𝑍‘𝑆) ∈ (SubMnd‘𝑀))))
89	88	adantr 480	. 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → ((𝑍‘𝑆) ∈ (SubRing‘𝑅) ↔ ((𝑍‘𝑆) ∈ (SubGrp‘𝑅) ∧ (𝑍‘𝑆) ∈ (SubMnd‘𝑀))))
90	84, 87, 89	mpbir2and 710	1 ⊢ ((𝑅 ∈ Ring ∧ 𝑆 ⊆ 𝐵) → (𝑍‘𝑆) ∈ (SubRing‘𝑅))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2934 ∀wral 3055 ⊆ wss 3943 ∅c0 4317 ‘cfv 6537 (class class class)co 7405 Basecbs 17153 +_gcplusg 17206 ._rcmulr 17207 0_gc0g 17394 Mndcmnd 18667 SubMndcsubmnd 18712 Grpcgrp 18863 inv_gcminusg 18864 SubGrpcsubg 19047 Cntzccntz 19231 mulGrpcmgp 20039 Ringcrg 20138 SubRingcsubrg 20469

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 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7853 df-2nd 7975 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-sets 17106 df-slot 17124 df-ndx 17136 df-base 17154 df-ress 17183 df-plusg 17219 df-mulr 17220 df-0g 17396 df-mgm 18573 df-sgrp 18652 df-mnd 18668 df-submnd 18714 df-grp 18866 df-minusg 18867 df-subg 19050 df-cntz 19233 df-cmn 19702 df-abl 19703 df-mgp 20040 df-rng 20058 df-ur 20087 df-ring 20140 df-subrng 20446 df-subrg 20471

This theorem is referenced by: cntzsdrg 20653 cntrcrng 32720

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