Theorem isdrng2 18757

Description: A division ring can equivalently be defined as a ring such that the nonzero elements form a group under multiplication (from which it follows that this is the same group as the group of units). (Contributed by Mario Carneiro, 2-Dec-2014.)

Hypotheses

Ref	Expression
isdrng2.b	⊢ 𝐵 = (Base‘𝑅)
isdrng2.z	⊢ 0 = (0g‘𝑅)
isdrng2.g	⊢ 𝐺 = ((mulGrp‘𝑅) ↾s (𝐵 ∖ { 0 }))

Assertion

Ref	Expression
isdrng2	⊢ (𝑅 ∈ DivRing ↔ (𝑅 ∈ Ring ∧ 𝐺 ∈ Grp))

Proof of Theorem isdrng2

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		isdrng2.b	. . 3 ⊢ 𝐵 = (Base‘𝑅)
2		eqid 2622	. . 3 ⊢ (Unit‘𝑅) = (Unit‘𝑅)
3		isdrng2.z	. . 3 ⊢ 0 = (0g‘𝑅)
4	1, 2, 3	isdrng 18751	. 2 ⊢ (𝑅 ∈ DivRing ↔ (𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })))
5		oveq2 6658	. . . . . . 7 ⊢ ((Unit‘𝑅) = (𝐵 ∖ { 0 }) → ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) = ((mulGrp‘𝑅) ↾s (𝐵 ∖ { 0 })))
6	5	adantl 482	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })) → ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) = ((mulGrp‘𝑅) ↾s (𝐵 ∖ { 0 })))
7		isdrng2.g	. . . . . 6 ⊢ 𝐺 = ((mulGrp‘𝑅) ↾s (𝐵 ∖ { 0 }))
8	6, 7	syl6eqr 2674	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })) → ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) = 𝐺)
9		eqid 2622	. . . . . . 7 ⊢ ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) = ((mulGrp‘𝑅) ↾s (Unit‘𝑅))
10	2, 9	unitgrp 18667	. . . . . 6 ⊢ (𝑅 ∈ Ring → ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) ∈ Grp)
11	10	adantr 481	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })) → ((mulGrp‘𝑅) ↾s (Unit‘𝑅)) ∈ Grp)
12	8, 11	eqeltrrd 2702	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })) → 𝐺 ∈ Grp)
13	1, 2	unitcl 18659	. . . . . . . . 9 ⊢ (𝑥 ∈ (Unit‘𝑅) → 𝑥 ∈ 𝐵)
14	13	adantl 482	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → 𝑥 ∈ 𝐵)
15		difss 3737	. . . . . . . . . . . . . . 15 ⊢ (𝐵 ∖ { 0 }) ⊆ 𝐵
16		eqid 2622	. . . . . . . . . . . . . . . . 17 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅)
17	16, 1	mgpbas 18495	. . . . . . . . . . . . . . . 16 ⊢ 𝐵 = (Base‘(mulGrp‘𝑅))
18	7, 17	ressbas2 15931	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∖ { 0 }) ⊆ 𝐵 → (𝐵 ∖ { 0 }) = (Base‘𝐺))
19	15, 18	ax-mp 5	. . . . . . . . . . . . . 14 ⊢ (𝐵 ∖ { 0 }) = (Base‘𝐺)
20		eqid 2622	. . . . . . . . . . . . . 14 ⊢ (0g‘𝐺) = (0g‘𝐺)
21	19, 20	grpidcl 17450	. . . . . . . . . . . . 13 ⊢ (𝐺 ∈ Grp → (0g‘𝐺) ∈ (𝐵 ∖ { 0 }))
22	21	ad2antlr 763	. . . . . . . . . . . 12 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (0g‘𝐺) ∈ (𝐵 ∖ { 0 }))
23		eldifsn 4317	. . . . . . . . . . . 12 ⊢ ((0g‘𝐺) ∈ (𝐵 ∖ { 0 }) ↔ ((0g‘𝐺) ∈ 𝐵 ∧ (0g‘𝐺) ≠ 0 ))
24	22, 23	sylib 208	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → ((0g‘𝐺) ∈ 𝐵 ∧ (0g‘𝐺) ≠ 0 ))
25	24	simprd 479	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (0g‘𝐺) ≠ 0 )
26		simpll 790	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → 𝑅 ∈ Ring)
27	22	eldifad 3586	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (0g‘𝐺) ∈ 𝐵)
28		simpr 477	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → 𝑥 ∈ (Unit‘𝑅))
29		eqid 2622	. . . . . . . . . . . 12 ⊢ (/r‘𝑅) = (/r‘𝑅)
30		eqid 2622	. . . . . . . . . . . 12 ⊢ (.r‘𝑅) = (.r‘𝑅)
31	1, 2, 29, 30	dvrcan1 18691	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ (0g‘𝐺) ∈ 𝐵 ∧ 𝑥 ∈ (Unit‘𝑅)) → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅)𝑥) = (0g‘𝐺))
32	26, 27, 28, 31	syl3anc 1326	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅)𝑥) = (0g‘𝐺))
33	1, 2, 29	dvrcl 18686	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ (0g‘𝐺) ∈ 𝐵 ∧ 𝑥 ∈ (Unit‘𝑅)) → ((0g‘𝐺)(/r‘𝑅)𝑥) ∈ 𝐵)
34	26, 27, 28, 33	syl3anc 1326	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → ((0g‘𝐺)(/r‘𝑅)𝑥) ∈ 𝐵)
35	1, 30, 3	ringrz 18588	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ ((0g‘𝐺)(/r‘𝑅)𝑥) ∈ 𝐵) → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅) 0 ) = 0 )
36	26, 34, 35	syl2anc 693	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅) 0 ) = 0 )
37	25, 32, 36	3netr4d 2871	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅)𝑥) ≠ (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅) 0 ))
38		oveq2 6658	. . . . . . . . . 10 ⊢ (𝑥 = 0 → (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅)𝑥) = (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅) 0 ))
39	38	necon3i 2826	. . . . . . . . 9 ⊢ ((((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅)𝑥) ≠ (((0g‘𝐺)(/r‘𝑅)𝑥)(.r‘𝑅) 0 ) → 𝑥 ≠ 0 )
40	37, 39	syl 17	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → 𝑥 ≠ 0 )
41		eldifsn 4317	. . . . . . . 8 ⊢ (𝑥 ∈ (𝐵 ∖ { 0 }) ↔ (𝑥 ∈ 𝐵 ∧ 𝑥 ≠ 0 ))
42	14, 40, 41	sylanbrc 698	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (Unit‘𝑅)) → 𝑥 ∈ (𝐵 ∖ { 0 }))
43	42	ex 450	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (𝑥 ∈ (Unit‘𝑅) → 𝑥 ∈ (𝐵 ∖ { 0 })))
44	43	ssrdv 3609	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (Unit‘𝑅) ⊆ (𝐵 ∖ { 0 }))
45		eldifi 3732	. . . . . . . . . . 11 ⊢ (𝑥 ∈ (𝐵 ∖ { 0 }) → 𝑥 ∈ 𝐵)
46	45	adantl 482	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥 ∈ 𝐵)
47		eqid 2622	. . . . . . . . . . . . 13 ⊢ (invg‘𝐺) = (invg‘𝐺)
48	19, 47	grpinvcl 17467	. . . . . . . . . . . 12 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → ((invg‘𝐺)‘𝑥) ∈ (𝐵 ∖ { 0 }))
49	48	adantll 750	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → ((invg‘𝐺)‘𝑥) ∈ (𝐵 ∖ { 0 }))
50	49	eldifad 3586	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → ((invg‘𝐺)‘𝑥) ∈ 𝐵)
51		eqid 2622	. . . . . . . . . . 11 ⊢ (∥r‘𝑅) = (∥r‘𝑅)
52	1, 51, 30	dvdsrmul 18648	. . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝐵 ∧ ((invg‘𝐺)‘𝑥) ∈ 𝐵) → 𝑥(∥r‘𝑅)(((invg‘𝐺)‘𝑥)(.r‘𝑅)𝑥))
53	46, 50, 52	syl2anc 693	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥(∥r‘𝑅)(((invg‘𝐺)‘𝑥)(.r‘𝑅)𝑥))
54		fvex 6201	. . . . . . . . . . . . . 14 ⊢ (Base‘𝑅) ∈ V
55	1, 54	eqeltri 2697	. . . . . . . . . . . . 13 ⊢ 𝐵 ∈ V
56		difexg 4808	. . . . . . . . . . . . 13 ⊢ (𝐵 ∈ V → (𝐵 ∖ { 0 }) ∈ V)
57	16, 30	mgpplusg 18493	. . . . . . . . . . . . . 14 ⊢ (.r‘𝑅) = (+g‘(mulGrp‘𝑅))
58	7, 57	ressplusg 15993	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∖ { 0 }) ∈ V → (.r‘𝑅) = (+g‘𝐺))
59	55, 56, 58	mp2b 10	. . . . . . . . . . . 12 ⊢ (.r‘𝑅) = (+g‘𝐺)
60	19, 59, 20, 47	grplinv 17468	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (((invg‘𝐺)‘𝑥)(.r‘𝑅)𝑥) = (0g‘𝐺))
61	60	adantll 750	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (((invg‘𝐺)‘𝑥)(.r‘𝑅)𝑥) = (0g‘𝐺))
62		eqid 2622	. . . . . . . . . . . . . . 15 ⊢ (1r‘𝑅) = (1r‘𝑅)
63	1, 62	ringidcl 18568	. . . . . . . . . . . . . 14 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) ∈ 𝐵)
64	1, 30, 62	ringlidm 18571	. . . . . . . . . . . . . 14 ⊢ ((𝑅 ∈ Ring ∧ (1r‘𝑅) ∈ 𝐵) → ((1r‘𝑅)(.r‘𝑅)(1r‘𝑅)) = (1r‘𝑅))
65	63, 64	mpdan 702	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ Ring → ((1r‘𝑅)(.r‘𝑅)(1r‘𝑅)) = (1r‘𝑅))
66	65	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → ((1r‘𝑅)(.r‘𝑅)(1r‘𝑅)) = (1r‘𝑅))
67		simpr 477	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → 𝐺 ∈ Grp)
68	2, 62	1unit 18658	. . . . . . . . . . . . . . 15 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) ∈ (Unit‘𝑅))
69	68	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (1r‘𝑅) ∈ (Unit‘𝑅))
70	44, 69	sseldd 3604	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (1r‘𝑅) ∈ (𝐵 ∖ { 0 }))
71	19, 59, 20	grpid 17457	. . . . . . . . . . . . 13 ⊢ ((𝐺 ∈ Grp ∧ (1r‘𝑅) ∈ (𝐵 ∖ { 0 })) → (((1r‘𝑅)(.r‘𝑅)(1r‘𝑅)) = (1r‘𝑅) ↔ (0g‘𝐺) = (1r‘𝑅)))
72	67, 70, 71	syl2anc 693	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (((1r‘𝑅)(.r‘𝑅)(1r‘𝑅)) = (1r‘𝑅) ↔ (0g‘𝐺) = (1r‘𝑅)))
73	66, 72	mpbid 222	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (0g‘𝐺) = (1r‘𝑅))
74	73	adantr 481	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (0g‘𝐺) = (1r‘𝑅))
75	61, 74	eqtrd 2656	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (((invg‘𝐺)‘𝑥)(.r‘𝑅)𝑥) = (1r‘𝑅))
76	53, 75	breqtrd 4679	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥(∥r‘𝑅)(1r‘𝑅))
77		eqid 2622	. . . . . . . . . . . 12 ⊢ (oppr‘𝑅) = (oppr‘𝑅)
78	77, 1	opprbas 18629	. . . . . . . . . . 11 ⊢ 𝐵 = (Base‘(oppr‘𝑅))
79		eqid 2622	. . . . . . . . . . 11 ⊢ (∥r‘(oppr‘𝑅)) = (∥r‘(oppr‘𝑅))
80		eqid 2622	. . . . . . . . . . 11 ⊢ (.r‘(oppr‘𝑅)) = (.r‘(oppr‘𝑅))
81	78, 79, 80	dvdsrmul 18648	. . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝐵 ∧ ((invg‘𝐺)‘𝑥) ∈ 𝐵) → 𝑥(∥r‘(oppr‘𝑅))(((invg‘𝐺)‘𝑥)(.r‘(oppr‘𝑅))𝑥))
82	46, 50, 81	syl2anc 693	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥(∥r‘(oppr‘𝑅))(((invg‘𝐺)‘𝑥)(.r‘(oppr‘𝑅))𝑥))
83	1, 30, 77, 80	opprmul 18626	. . . . . . . . . 10 ⊢ (((invg‘𝐺)‘𝑥)(.r‘(oppr‘𝑅))𝑥) = (𝑥(.r‘𝑅)((invg‘𝐺)‘𝑥))
84	19, 59, 20, 47	grprinv 17469	. . . . . . . . . . . 12 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (𝑥(.r‘𝑅)((invg‘𝐺)‘𝑥)) = (0g‘𝐺))
85	84	adantll 750	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (𝑥(.r‘𝑅)((invg‘𝐺)‘𝑥)) = (0g‘𝐺))
86	85, 74	eqtrd 2656	. . . . . . . . . 10 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (𝑥(.r‘𝑅)((invg‘𝐺)‘𝑥)) = (1r‘𝑅))
87	83, 86	syl5eq 2668	. . . . . . . . 9 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → (((invg‘𝐺)‘𝑥)(.r‘(oppr‘𝑅))𝑥) = (1r‘𝑅))
88	82, 87	breqtrd 4679	. . . . . . . 8 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥(∥r‘(oppr‘𝑅))(1r‘𝑅))
89	2, 62, 51, 77, 79	isunit 18657	. . . . . . . 8 ⊢ (𝑥 ∈ (Unit‘𝑅) ↔ (𝑥(∥r‘𝑅)(1r‘𝑅) ∧ 𝑥(∥r‘(oppr‘𝑅))(1r‘𝑅)))
90	76, 88, 89	sylanbrc 698	. . . . . . 7 ⊢ (((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) ∧ 𝑥 ∈ (𝐵 ∖ { 0 })) → 𝑥 ∈ (Unit‘𝑅))
91	90	ex 450	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (𝑥 ∈ (𝐵 ∖ { 0 }) → 𝑥 ∈ (Unit‘𝑅)))
92	91	ssrdv 3609	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (𝐵 ∖ { 0 }) ⊆ (Unit‘𝑅))
93	44, 92	eqssd 3620	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ Grp) → (Unit‘𝑅) = (𝐵 ∖ { 0 }))
94	12, 93	impbida 877	. . 3 ⊢ (𝑅 ∈ Ring → ((Unit‘𝑅) = (𝐵 ∖ { 0 }) ↔ 𝐺 ∈ Grp))
95	94	pm5.32i 669	. 2 ⊢ ((𝑅 ∈ Ring ∧ (Unit‘𝑅) = (𝐵 ∖ { 0 })) ↔ (𝑅 ∈ Ring ∧ 𝐺 ∈ Grp))
96	4, 95	bitri 264	1 ⊢ (𝑅 ∈ DivRing ↔ (𝑅 ∈ Ring ∧ 𝐺 ∈ Grp))

Syntax hints:   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  Vcvv 3200   ∖ cdif 3571   ⊆ wss 3574  {csn 4177   class class class wbr 4653  ‘cfv 5888  (class class class)co 6650  Basecbs 15857   ↾_s cress 15858  +_gcplusg 15941  ._rcmulr 15942  0_gc0g 16100  Grpcgrp 17422  inv_gcminusg 17423  mulGrpcmgp 18489  1_rcur 18501  Ringcrg 18547  opp_rcoppr 18622  ∥_rcdsr 18638  Unitcui 18639  /_rcdvr 18682  DivRingcdr 18747

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-tpos 7352  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-nn 11021  df-2 11079  df-3 11080  df-ndx 15860  df-slot 15861  df-base 15863  df-sets 15864  df-ress 15865  df-plusg 15954  df-mulr 15955  df-0g 16102  df-mgm 17242  df-sgrp 17284  df-mnd 17295  df-grp 17425  df-minusg 17426  df-mgp 18490  df-ur 18502  df-ring 18549  df-oppr 18623  df-dvdsr 18641  df-unit 18642  df-invr 18672  df-dvr 18683  df-drng 18749

This theorem is referenced by:  drngmgp  18759  isdrngd  18772