Theorem issrngd 21127

Description: Properties that determine a star ring. (Contributed by Mario Carneiro, 18-Nov-2013.) (Revised by Mario Carneiro, 6-Oct-2015.)

Hypotheses

Ref	Expression
issrngd.k	⊢ (𝜑 → 𝐾 = (Base‘𝑅))
issrngd.p	⊢ (𝜑 → + = (+g‘𝑅))
issrngd.t	⊢ (𝜑 → · = (.r‘𝑅))
issrngd.c	⊢ (𝜑 → ∗ = (*𝑟‘𝑅))
issrngd.r	⊢ (𝜑 → 𝑅 ∈ Ring)
issrngd.cl	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾) → ( ∗ ‘𝑥) ∈ 𝐾)
issrngd.dp	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 + 𝑦)) = (( ∗ ‘𝑥) + ( ∗ ‘𝑦)))
issrngd.dt	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 · 𝑦)) = (( ∗ ‘𝑦) · ( ∗ ‘𝑥)))
issrngd.id	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾) → ( ∗ ‘( ∗ ‘𝑥)) = 𝑥)

Assertion

Ref	Expression
issrngd	⊢ (𝜑 → 𝑅 ∈ *-Ring)

Distinct variable groups:   𝑥,𝑦,𝐾   𝑥,𝑅,𝑦   𝜑,𝑥,𝑦

Allowed substitution hints:   + (𝑥, 𝑦)   · (𝑥, 𝑦)   ∗ (𝑥, 𝑦)

Proof of Theorem issrngd

Step	Hyp	Ref	Expression
1		eqid 2763	. . 3 ⊢ (Base‘𝑅) = (Base‘𝑅)
2		eqid 2763	. . 3 ⊢ (1r‘𝑅) = (1r‘𝑅)
3		eqid 2763	. . . 4 ⊢ (oppr‘𝑅) = (oppr‘𝑅)
4	3, 2	oppr1 20595	. . 3 ⊢ (1r‘𝑅) = (1r‘(oppr‘𝑅))
5		eqid 2763	. . 3 ⊢ (.r‘𝑅) = (.r‘𝑅)
6		eqid 2763	. . 3 ⊢ (.r‘(oppr‘𝑅)) = (.r‘(oppr‘𝑅))
7		issrngd.r	. . 3 ⊢ (𝜑 → 𝑅 ∈ Ring)
8	3	opprring 20592	. . . 4 ⊢ (𝑅 ∈ Ring → (oppr‘𝑅) ∈ Ring)
9	7, 8	syl 18	. . 3 ⊢ (𝜑 → (oppr‘𝑅) ∈ Ring)
10		id 23	. . . . . . . . 9 ⊢ (𝑥 = (1r‘𝑅) → 𝑥 = (1r‘𝑅))
11		fveq2 6896	. . . . . . . . . 10 ⊢ (𝑥 = (1r‘𝑅) → ((*𝑟‘𝑅)‘𝑥) = ((*𝑟‘𝑅)‘(1r‘𝑅)))
12	11	fveq2d 6900	. . . . . . . . 9 ⊢ (𝑥 = (1r‘𝑅) → ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅))))
13	10, 12	eqeq12d 2779	. . . . . . . 8 ⊢ (𝑥 = (1r‘𝑅) → (𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) ↔ (1r‘𝑅) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))))
14		issrngd.id	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾) → ( ∗ ‘( ∗ ‘𝑥)) = 𝑥)
15	14	ex 418	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑥 ∈ 𝐾 → ( ∗ ‘( ∗ ‘𝑥)) = 𝑥))
16		issrngd.k	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐾 = (Base‘𝑅))
17	16	eleq2d 2850	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑥 ∈ 𝐾 ↔ 𝑥 ∈ (Base‘𝑅)))
18		issrngd.c	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ∗ = (*𝑟‘𝑅))
19	18	fveq1d 6898	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ( ∗ ‘𝑥) = ((*𝑟‘𝑅)‘𝑥))
20	18, 19	fveq12d 6903	. . . . . . . . . . . . 13 ⊢ (𝜑 → ( ∗ ‘( ∗ ‘𝑥)) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)))
21	20	eqeq1d 2765	. . . . . . . . . . . 12 ⊢ (𝜑 → (( ∗ ‘( ∗ ‘𝑥)) = 𝑥 ↔ ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) = 𝑥))
22	15, 17, 21	3imtr3d 296	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 ∈ (Base‘𝑅) → ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) = 𝑥))
23	22	imp 412	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑅)) → ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) = 𝑥)
24	23	eqcomd 2769	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑅)) → 𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)))
25	24	ralrimiva 3158	. . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ (Base‘𝑅)𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)))
26	1, 2	ringidcl 20509	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) ∈ (Base‘𝑅))
27	7, 26	syl 18	. . . . . . . 8 ⊢ (𝜑 → (1r‘𝑅) ∈ (Base‘𝑅))
28	13, 25, 27	rspcdva 3581	. . . . . . 7 ⊢ (𝜑 → (1r‘𝑅) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅))))
29	28	oveq1d 7445	. . . . . 6 ⊢ (𝜑 → ((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) = (((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
30	11	eleq1d 2849	. . . . . . . 8 ⊢ (𝑥 = (1r‘𝑅) → (((*𝑟‘𝑅)‘𝑥) ∈ (Base‘𝑅) ↔ ((*𝑟‘𝑅)‘(1r‘𝑅)) ∈ (Base‘𝑅)))
31		issrngd.cl	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾) → ( ∗ ‘𝑥) ∈ 𝐾)
32	31	ex 418	. . . . . . . . . 10 ⊢ (𝜑 → (𝑥 ∈ 𝐾 → ( ∗ ‘𝑥) ∈ 𝐾))
33	19, 16	eleq12d 2858	. . . . . . . . . 10 ⊢ (𝜑 → (( ∗ ‘𝑥) ∈ 𝐾 ↔ ((*𝑟‘𝑅)‘𝑥) ∈ (Base‘𝑅)))
34	32, 17, 33	3imtr3d 296	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (Base‘𝑅) → ((*𝑟‘𝑅)‘𝑥) ∈ (Base‘𝑅)))
35	34	ralrimiv 3157	. . . . . . . 8 ⊢ (𝜑 → ∀𝑥 ∈ (Base‘𝑅)((*𝑟‘𝑅)‘𝑥) ∈ (Base‘𝑅))
36	30, 35, 27	rspcdva 3581	. . . . . . 7 ⊢ (𝜑 → ((*𝑟‘𝑅)‘(1r‘𝑅)) ∈ (Base‘𝑅))
37		issrngd.dt	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 · 𝑦)) = (( ∗ ‘𝑦) · ( ∗ ‘𝑥)))
38	37	3expib 1140	. . . . . . . . 9 ⊢ (𝜑 → ((𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 · 𝑦)) = (( ∗ ‘𝑦) · ( ∗ ‘𝑥))))
39	16	eleq2d 2850	. . . . . . . . . 10 ⊢ (𝜑 → (𝑦 ∈ 𝐾 ↔ 𝑦 ∈ (Base‘𝑅)))
40	17, 39	anbi12d 644	. . . . . . . . 9 ⊢ (𝜑 → ((𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) ↔ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))))
41		issrngd.t	. . . . . . . . . . . 12 ⊢ (𝜑 → · = (.r‘𝑅))
42	41	oveqd 7447	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 · 𝑦) = (𝑥(.r‘𝑅)𝑦))
43	18, 42	fveq12d 6903	. . . . . . . . . 10 ⊢ (𝜑 → ( ∗ ‘(𝑥 · 𝑦)) = ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)))
44	18	fveq1d 6898	. . . . . . . . . . 11 ⊢ (𝜑 → ( ∗ ‘𝑦) = ((*𝑟‘𝑅)‘𝑦))
45	41, 44, 19	oveq123d 7451	. . . . . . . . . 10 ⊢ (𝜑 → (( ∗ ‘𝑦) · ( ∗ ‘𝑥)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥)))
46	43, 45	eqeq12d 2779	. . . . . . . . 9 ⊢ (𝜑 → (( ∗ ‘(𝑥 · 𝑦)) = (( ∗ ‘𝑦) · ( ∗ ‘𝑥)) ↔ ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥))))
47	38, 40, 46	3imtr3d 296	. . . . . . . 8 ⊢ (𝜑 → ((𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥))))
48	47	ralrimivv 3207	. . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥)))
49		fvoveq1 7453	. . . . . . . . 9 ⊢ (𝑥 = (1r‘𝑅) → ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)𝑦)))
50	11	oveq2d 7446	. . . . . . . . 9 ⊢ (𝑥 = (1r‘𝑅) → (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
51	49, 50	eqeq12d 2779	. . . . . . . 8 ⊢ (𝑥 = (1r‘𝑅) → (((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥)) ↔ ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))))
52		oveq2 7438	. . . . . . . . . 10 ⊢ (𝑦 = ((*𝑟‘𝑅)‘(1r‘𝑅)) → ((1r‘𝑅)(.r‘𝑅)𝑦) = ((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
53	52	fveq2d 6900	. . . . . . . . 9 ⊢ (𝑦 = ((*𝑟‘𝑅)‘(1r‘𝑅)) → ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))))
54		fveq2 6896	. . . . . . . . . 10 ⊢ (𝑦 = ((*𝑟‘𝑅)‘(1r‘𝑅)) → ((*𝑟‘𝑅)‘𝑦) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅))))
55	54	oveq1d 7445	. . . . . . . . 9 ⊢ (𝑦 = ((*𝑟‘𝑅)‘(1r‘𝑅)) → (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) = (((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
56	53, 55	eqeq12d 2779	. . . . . . . 8 ⊢ (𝑦 = ((*𝑟‘𝑅)‘(1r‘𝑅)) → (((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) ↔ ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))) = (((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))))
57	51, 56	rspc2va 3591	. . . . . . 7 ⊢ ((((1r‘𝑅) ∈ (Base‘𝑅) ∧ ((*𝑟‘𝑅)‘(1r‘𝑅)) ∈ (Base‘𝑅)) ∧ ∀𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥))) → ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))) = (((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
58	27, 36, 48, 57	syl21anc 851	. . . . . 6 ⊢ (𝜑 → ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))) = (((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅)))(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))))
59	29, 58	eqtr4d 2801	. . . . 5 ⊢ (𝜑 → ((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) = ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))))
60	1, 5, 2	ringlidm 20513	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ ((*𝑟‘𝑅)‘(1r‘𝑅)) ∈ (Base‘𝑅)) → ((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) = ((*𝑟‘𝑅)‘(1r‘𝑅)))
61	7, 36, 60	syl2anc 596	. . . . 5 ⊢ (𝜑 → ((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅))) = ((*𝑟‘𝑅)‘(1r‘𝑅)))
62	61	fveq2d 6900	. . . . 5 ⊢ (𝜑 → ((*𝑟‘𝑅)‘((1r‘𝑅)(.r‘𝑅)((*𝑟‘𝑅)‘(1r‘𝑅)))) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅))))
63	59, 61, 62	3eqtr3d 2806	. . . 4 ⊢ (𝜑 → ((*𝑟‘𝑅)‘(1r‘𝑅)) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘(1r‘𝑅))))
64		eqid 2763	. . . . . 6 ⊢ (*𝑟‘𝑅) = (*𝑟‘𝑅)
65		eqid 2763	. . . . . 6 ⊢ (*rf‘𝑅) = (*rf‘𝑅)
66	1, 64, 65	stafval 21114	. . . . 5 ⊢ ((1r‘𝑅) ∈ (Base‘𝑅) → ((*rf‘𝑅)‘(1r‘𝑅)) = ((*𝑟‘𝑅)‘(1r‘𝑅)))
67	27, 66	syl 18	. . . 4 ⊢ (𝜑 → ((*rf‘𝑅)‘(1r‘𝑅)) = ((*𝑟‘𝑅)‘(1r‘𝑅)))
68	63, 67, 28	3eqtr4d 2808	. . 3 ⊢ (𝜑 → ((*rf‘𝑅)‘(1r‘𝑅)) = (1r‘𝑅))
69	47	imp 412	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥)))
70	1, 5, 3, 6	opprmul 20585	. . . . 5 ⊢ (((*𝑟‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*𝑟‘𝑅)‘𝑦)) = (((*𝑟‘𝑅)‘𝑦)(.r‘𝑅)((*𝑟‘𝑅)‘𝑥))
71	69, 70	eqtr4di 2816	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*𝑟‘𝑅)‘𝑦)))
72	1, 5	ringcl 20492	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(.r‘𝑅)𝑦) ∈ (Base‘𝑅))
73	72	3expb 1138	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(.r‘𝑅)𝑦) ∈ (Base‘𝑅))
74	7, 73	sylan 592	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(.r‘𝑅)𝑦) ∈ (Base‘𝑅))
75	1, 64, 65	stafval 21114	. . . . 5 ⊢ ((𝑥(.r‘𝑅)𝑦) ∈ (Base‘𝑅) → ((*rf‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)))
76	74, 75	syl 18	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*rf‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘(𝑥(.r‘𝑅)𝑦)))
77	1, 64, 65	stafval 21114	. . . . . 6 ⊢ (𝑥 ∈ (Base‘𝑅) → ((*rf‘𝑅)‘𝑥) = ((*𝑟‘𝑅)‘𝑥))
78	1, 64, 65	stafval 21114	. . . . . 6 ⊢ (𝑦 ∈ (Base‘𝑅) → ((*rf‘𝑅)‘𝑦) = ((*𝑟‘𝑅)‘𝑦))
79	77, 78	oveqan12d 7449	. . . . 5 ⊢ ((𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (((*rf‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*rf‘𝑅)‘𝑦)) = (((*𝑟‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*𝑟‘𝑅)‘𝑦)))
80	79	adantl 487	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (((*rf‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*rf‘𝑅)‘𝑦)) = (((*𝑟‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*𝑟‘𝑅)‘𝑦)))
81	71, 76, 80	3eqtr4d 2808	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*rf‘𝑅)‘(𝑥(.r‘𝑅)𝑦)) = (((*rf‘𝑅)‘𝑥)(.r‘(oppr‘𝑅))((*rf‘𝑅)‘𝑦)))
82	3, 1	opprbas 20588	. . 3 ⊢ (Base‘𝑅) = (Base‘(oppr‘𝑅))
83		eqid 2763	. . 3 ⊢ (+g‘𝑅) = (+g‘𝑅)
84	3, 83	oppradd 20589	. . 3 ⊢ (+g‘𝑅) = (+g‘(oppr‘𝑅))
85	34	imp 412	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (Base‘𝑅)) → ((*𝑟‘𝑅)‘𝑥) ∈ (Base‘𝑅))
86	1, 64, 65	staffval 21113	. . . 4 ⊢ (*rf‘𝑅) = (𝑥 ∈ (Base‘𝑅) ↦ ((*𝑟‘𝑅)‘𝑥))
87	85, 86	fmptd 7125	. . 3 ⊢ (𝜑 → (*rf‘𝑅):(Base‘𝑅)⟶(Base‘𝑅))
88		issrngd.dp	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 + 𝑦)) = (( ∗ ‘𝑥) + ( ∗ ‘𝑦)))
89	88	3expib 1140	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝐾) → ( ∗ ‘(𝑥 + 𝑦)) = (( ∗ ‘𝑥) + ( ∗ ‘𝑦))))
90		issrngd.p	. . . . . . . . 9 ⊢ (𝜑 → + = (+g‘𝑅))
91	90	oveqd 7447	. . . . . . . 8 ⊢ (𝜑 → (𝑥 + 𝑦) = (𝑥(+g‘𝑅)𝑦))
92	18, 91	fveq12d 6903	. . . . . . 7 ⊢ (𝜑 → ( ∗ ‘(𝑥 + 𝑦)) = ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)))
93	90, 19, 44	oveq123d 7451	. . . . . . 7 ⊢ (𝜑 → (( ∗ ‘𝑥) + ( ∗ ‘𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦)))
94	92, 93	eqeq12d 2779	. . . . . 6 ⊢ (𝜑 → (( ∗ ‘(𝑥 + 𝑦)) = (( ∗ ‘𝑥) + ( ∗ ‘𝑦)) ↔ ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦))))
95	89, 40, 94	3imtr3d 296	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦))))
96	95	imp 412	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦)))
97	1, 83	ringacl 20522	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ 𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑥(+g‘𝑅)𝑦) ∈ (Base‘𝑅))
98	97	3expb 1138	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(+g‘𝑅)𝑦) ∈ (Base‘𝑅))
99	7, 98	sylan 592	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(+g‘𝑅)𝑦) ∈ (Base‘𝑅))
100	1, 64, 65	stafval 21114	. . . . 5 ⊢ ((𝑥(+g‘𝑅)𝑦) ∈ (Base‘𝑅) → ((*rf‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)))
101	99, 100	syl 18	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*rf‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = ((*𝑟‘𝑅)‘(𝑥(+g‘𝑅)𝑦)))
102	77, 78	oveqan12d 7449	. . . . 5 ⊢ ((𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅)) → (((*rf‘𝑅)‘𝑥)(+g‘𝑅)((*rf‘𝑅)‘𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦)))
103	102	adantl 487	. . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (((*rf‘𝑅)‘𝑥)(+g‘𝑅)((*rf‘𝑅)‘𝑦)) = (((*𝑟‘𝑅)‘𝑥)(+g‘𝑅)((*𝑟‘𝑅)‘𝑦)))
104	96, 101, 103	3eqtr4d 2808	. . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → ((*rf‘𝑅)‘(𝑥(+g‘𝑅)𝑦)) = (((*rf‘𝑅)‘𝑥)(+g‘𝑅)((*rf‘𝑅)‘𝑦)))
105	1, 2, 4, 5, 6, 7, 9, 68, 81, 82, 83, 84, 87, 104	isrhmd 20737	. 2 ⊢ (𝜑 → (*rf‘𝑅) ∈ (𝑅 RingHom (oppr‘𝑅)))
106	1, 64, 65	staffval 21113	. . 3 ⊢ (*rf‘𝑅) = (𝑦 ∈ (Base‘𝑅) ↦ ((*𝑟‘𝑅)‘𝑦))
107	106	fmpt 7121	. . . . . . 7 ⊢ (∀𝑦 ∈ (Base‘𝑅)((*𝑟‘𝑅)‘𝑦) ∈ (Base‘𝑅) ↔ (*rf‘𝑅):(Base‘𝑅)⟶(Base‘𝑅))
108	87, 107	sylibr 237	. . . . . 6 ⊢ (𝜑 → ∀𝑦 ∈ (Base‘𝑅)((*𝑟‘𝑅)‘𝑦) ∈ (Base‘𝑅))
109	108	r19.21bi 3258	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (Base‘𝑅)) → ((*𝑟‘𝑅)‘𝑦) ∈ (Base‘𝑅))
110		id 23	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑦 → 𝑥 = 𝑦)
111		fveq2 6896	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝑦 → ((*𝑟‘𝑅)‘𝑥) = ((*𝑟‘𝑅)‘𝑦))
112	111	fveq2d 6900	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑦 → ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦)))
113	110, 112	eqeq12d 2779	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → (𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) ↔ 𝑦 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦))))
114	113	rspccva 3579	. . . . . . . . 9 ⊢ ((∀𝑥 ∈ (Base‘𝑅)𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)) ∧ 𝑦 ∈ (Base‘𝑅)) → 𝑦 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦)))
115	25, 114	sylan 592	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ (Base‘𝑅)) → 𝑦 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦)))
116	115	adantrl 729	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → 𝑦 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦)))
117		fveq2 6896	. . . . . . . 8 ⊢ (𝑥 = ((*𝑟‘𝑅)‘𝑦) → ((*𝑟‘𝑅)‘𝑥) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦)))
118	117	eqeq2d 2774	. . . . . . 7 ⊢ (𝑥 = ((*𝑟‘𝑅)‘𝑦) → (𝑦 = ((*𝑟‘𝑅)‘𝑥) ↔ 𝑦 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑦))))
119	116, 118	syl5ibrcom 250	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥 = ((*𝑟‘𝑅)‘𝑦) → 𝑦 = ((*𝑟‘𝑅)‘𝑥)))
120	24	adantrr 730	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → 𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)))
121		fveq2 6896	. . . . . . . 8 ⊢ (𝑦 = ((*𝑟‘𝑅)‘𝑥) → ((*𝑟‘𝑅)‘𝑦) = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥)))
122	121	eqeq2d 2774	. . . . . . 7 ⊢ (𝑦 = ((*𝑟‘𝑅)‘𝑥) → (𝑥 = ((*𝑟‘𝑅)‘𝑦) ↔ 𝑥 = ((*𝑟‘𝑅)‘((*𝑟‘𝑅)‘𝑥))))
123	120, 122	syl5ibrcom 250	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑦 = ((*𝑟‘𝑅)‘𝑥) → 𝑥 = ((*𝑟‘𝑅)‘𝑦)))
124	119, 123	impbid 215	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥 = ((*𝑟‘𝑅)‘𝑦) ↔ 𝑦 = ((*𝑟‘𝑅)‘𝑥)))
125	86, 85, 109, 124	f1ocnv2d 7684	. . . 4 ⊢ (𝜑 → ((*rf‘𝑅):(Base‘𝑅)–1-1-onto→(Base‘𝑅) ∧ ◡(*rf‘𝑅) = (𝑦 ∈ (Base‘𝑅) ↦ ((*𝑟‘𝑅)‘𝑦))))
126	125	simprd 501	. . 3 ⊢ (𝜑 → ◡(*rf‘𝑅) = (𝑦 ∈ (Base‘𝑅) ↦ ((*𝑟‘𝑅)‘𝑦)))
127	106, 126	eqtr4id 2817	. 2 ⊢ (𝜑 → (*rf‘𝑅) = ◡(*rf‘𝑅))
128	3, 65	issrng 21116	. 2 ⊢ (𝑅 ∈ *-Ring ↔ ((*rf‘𝑅) ∈ (𝑅 RingHom (oppr‘𝑅)) ∧ (*rf‘𝑅) = ◡(*rf‘𝑅)))
129	105, 127, 128	sylanbrc 595	1 ⊢ (𝜑 → 𝑅 ∈ *-Ring)

This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∧ w3a 1103   = wceq 1569   ∈ wcel 2146  ∀wral 3080   ↦ cmpt 5189  ^◡ccnv 5654  ⟶wf 6543  –1-1-onto→wf1o 6546  ‘cfv 6547  (class class class)co 7430  Basecbs 17402  +_gcplusg 17443  ._rcmulr 17444  *_𝑟cstv 17445  1_rcur 20422  Ringcrg 20474  opp_rcoppr 20581   RingHom crh 20714  *_rfcstf 21109  *-Ringcsr 21110

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2196  ax-12 2215  ax-ext 2735  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7761  ax-cnex 11269  ax-resscn 11270  ax-1cn 11271  ax-icn 11272  ax-addcl 11273  ax-addrcl 11274  ax-mulcl 11275  ax-mulrcl 11276  ax-mulcom 11277  ax-addass 11278  ax-mulass 11279  ax-distr 11280  ax-i2m1 11281  ax-1ne0 11282  ax-1rid 11283  ax-rnegex 11284  ax-rrecex 11285  ax-cnre 11286  ax-pre-lttri 11287  ax-pre-lttrn 11288  ax-pre-ltadd 11289  ax-pre-mulgt0 11290

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2101  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-mpt 5190  df-tr 5216  df-id 5550  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-we 5610  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-pred 6311  df-ord 6372  df-on 6373  df-lim 6374  df-suc 6375  df-iota 6501  df-fun 6549  df-fn 6550  df-f 6551  df-f1 6552  df-fo 6553  df-f1o 6554  df-fv 6555  df-riota 7387  df-ov 7433  df-oprab 7434  df-mpo 7435  df-om 7888  df-1st 8011  df-2nd 8012  df-tpos 8257  df-frecs 8313  df-wrecs 8344  df-recs 8393  df-rdg 8432  df-er 8731  df-map 8863  df-en 8988  df-dom 8989  df-sdom 8990  df-pnf 11358  df-mnf 11359  df-xr 11360  df-ltxr 11361  df-le 11362  df-sub 11556  df-neg 11557  df-nn 12349  df-2 12418  df-3 12419  df-sets 17357  df-slot 17375  df-ndx 17387  df-base 17403  df-plusg 17456  df-mulr 17457  df-0g 17627  df-mgm 18831  df-sgrp 18923  df-mnd 18939  df-mhm 18993  df-grp 19162  df-minusg 19163  df-ghm 19443  df-cmn 20011  df-abl 20012  df-mgp 20376  df-rng 20390  df-ur 20423  df-ring 20476  df-oppr 20582  df-rhm 20717  df-staf 21111  df-srng 21112

This theorem is used by:  idsrngd  21128  cnsrng  21727  hlhilsrnglem  43153