Theorem opprunitd 14123

Description: Being a unit is a symmetric property, so it transfers to the opposite ring. (Contributed by Mario Carneiro, 4-Dec-2014.)

Hypotheses

Ref	Expression
opprunitd.1	⊢ (𝜑 → 𝑈 = (Unit‘𝑅))
opprunitd.2	⊢ (𝜑 → 𝑆 = (oppr‘𝑅))
opprunitd.r	⊢ (𝜑 → 𝑅 ∈ Ring)

Assertion

Ref	Expression
opprunitd	⊢ (𝜑 → 𝑈 = (Unit‘𝑆))

Proof of Theorem opprunitd

Dummy variables 𝑦 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		opprunitd.1	. . . . . 6 ⊢ (𝜑 → 𝑈 = (Unit‘𝑅))
2		eqidd 2232	. . . . . 6 ⊢ (𝜑 → (1r‘𝑅) = (1r‘𝑅))
3		eqidd 2232	. . . . . 6 ⊢ (𝜑 → (∥r‘𝑅) = (∥r‘𝑅))
4		opprunitd.2	. . . . . 6 ⊢ (𝜑 → 𝑆 = (oppr‘𝑅))
5		eqidd 2232	. . . . . 6 ⊢ (𝜑 → (∥r‘𝑆) = (∥r‘𝑆))
6		opprunitd.r	. . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ Ring)
7		ringsrg 14059	. . . . . . 7 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ SRing)
8	6, 7	syl 14	. . . . . 6 ⊢ (𝜑 → 𝑅 ∈ SRing)
9	1, 2, 3, 4, 5, 8	isunitd 14119	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝑈 ↔ (𝑥(∥r‘𝑅)(1r‘𝑅) ∧ 𝑥(∥r‘𝑆)(1r‘𝑅))))
10		eqid 2231	. . . . . . . . . . . . . . 15 ⊢ (oppr‘𝑅) = (oppr‘𝑅)
11	10	opprring 14091	. . . . . . . . . . . . . 14 ⊢ (𝑅 ∈ Ring → (oppr‘𝑅) ∈ Ring)
12	6, 11	syl 14	. . . . . . . . . . . . 13 ⊢ (𝜑 → (oppr‘𝑅) ∈ Ring)
13	4, 12	eqeltrd 2308	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑆 ∈ Ring)
14		vex 2805	. . . . . . . . . . . . 13 ⊢ 𝑦 ∈ V
15	14	a1i 9	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑦 ∈ V)
16		vex 2805	. . . . . . . . . . . . 13 ⊢ 𝑥 ∈ V
17	16	a1i 9	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑥 ∈ V)
18		eqid 2231	. . . . . . . . . . . . 13 ⊢ (Base‘𝑆) = (Base‘𝑆)
19		eqid 2231	. . . . . . . . . . . . 13 ⊢ (.r‘𝑆) = (.r‘𝑆)
20		eqid 2231	. . . . . . . . . . . . 13 ⊢ (oppr‘𝑆) = (oppr‘𝑆)
21		eqid 2231	. . . . . . . . . . . . 13 ⊢ (.r‘(oppr‘𝑆)) = (.r‘(oppr‘𝑆))
22	18, 19, 20, 21	opprmulg 14083	. . . . . . . . . . . 12 ⊢ ((𝑆 ∈ Ring ∧ 𝑦 ∈ V ∧ 𝑥 ∈ V) → (𝑦(.r‘(oppr‘𝑆))𝑥) = (𝑥(.r‘𝑆)𝑦))
23	13, 15, 17, 22	syl3anc 1273	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑦(.r‘(oppr‘𝑆))𝑥) = (𝑥(.r‘𝑆)𝑦))
24	4	fveq2d 5643	. . . . . . . . . . . 12 ⊢ (𝜑 → (.r‘𝑆) = (.r‘(oppr‘𝑅)))
25	24	oveqd 6034	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥(.r‘𝑆)𝑦) = (𝑥(.r‘(oppr‘𝑅))𝑦))
26		eqid 2231	. . . . . . . . . . . . 13 ⊢ (Base‘𝑅) = (Base‘𝑅)
27		eqid 2231	. . . . . . . . . . . . 13 ⊢ (.r‘𝑅) = (.r‘𝑅)
28		eqid 2231	. . . . . . . . . . . . 13 ⊢ (.r‘(oppr‘𝑅)) = (.r‘(oppr‘𝑅))
29	26, 27, 10, 28	opprmulg 14083	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ 𝑥 ∈ V ∧ 𝑦 ∈ V) → (𝑥(.r‘(oppr‘𝑅))𝑦) = (𝑦(.r‘𝑅)𝑥))
30	6, 17, 15, 29	syl3anc 1273	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥(.r‘(oppr‘𝑅))𝑦) = (𝑦(.r‘𝑅)𝑥))
31	23, 25, 30	3eqtrrd 2269	. . . . . . . . . 10 ⊢ (𝜑 → (𝑦(.r‘𝑅)𝑥) = (𝑦(.r‘(oppr‘𝑆))𝑥))
32	31	eqeq1d 2240	. . . . . . . . 9 ⊢ (𝜑 → ((𝑦(.r‘𝑅)𝑥) = (1r‘𝑅) ↔ (𝑦(.r‘(oppr‘𝑆))𝑥) = (1r‘𝑅)))
33	32	rexbidv 2533	. . . . . . . 8 ⊢ (𝜑 → (∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘𝑅)𝑥) = (1r‘𝑅) ↔ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘(oppr‘𝑆))𝑥) = (1r‘𝑅)))
34	33	anbi2d 464	. . . . . . 7 ⊢ (𝜑 → ((𝑥 ∈ (Base‘𝑅) ∧ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘𝑅)𝑥) = (1r‘𝑅)) ↔ (𝑥 ∈ (Base‘𝑅) ∧ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘(oppr‘𝑆))𝑥) = (1r‘𝑅))))
35		eqidd 2232	. . . . . . . 8 ⊢ (𝜑 → (Base‘𝑅) = (Base‘𝑅))
36		eqidd 2232	. . . . . . . 8 ⊢ (𝜑 → (.r‘𝑅) = (.r‘𝑅))
37	35, 3, 8, 36	dvdsrd 14107	. . . . . . 7 ⊢ (𝜑 → (𝑥(∥r‘𝑅)(1r‘𝑅) ↔ (𝑥 ∈ (Base‘𝑅) ∧ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘𝑅)𝑥) = (1r‘𝑅))))
38	10, 26	opprbasg 14087	. . . . . . . . . 10 ⊢ (𝑅 ∈ SRing → (Base‘𝑅) = (Base‘(oppr‘𝑅)))
39	8, 38	syl 14	. . . . . . . . 9 ⊢ (𝜑 → (Base‘𝑅) = (Base‘(oppr‘𝑅)))
40	4	fveq2d 5643	. . . . . . . . 9 ⊢ (𝜑 → (Base‘𝑆) = (Base‘(oppr‘𝑅)))
41	20, 18	opprbasg 14087	. . . . . . . . . 10 ⊢ (𝑆 ∈ Ring → (Base‘𝑆) = (Base‘(oppr‘𝑆)))
42	13, 41	syl 14	. . . . . . . . 9 ⊢ (𝜑 → (Base‘𝑆) = (Base‘(oppr‘𝑆)))
43	39, 40, 42	3eqtr2d 2270	. . . . . . . 8 ⊢ (𝜑 → (Base‘𝑅) = (Base‘(oppr‘𝑆)))
44		eqidd 2232	. . . . . . . 8 ⊢ (𝜑 → (∥r‘(oppr‘𝑆)) = (∥r‘(oppr‘𝑆)))
45	20	opprring 14091	. . . . . . . . . 10 ⊢ (𝑆 ∈ Ring → (oppr‘𝑆) ∈ Ring)
46	13, 45	syl 14	. . . . . . . . 9 ⊢ (𝜑 → (oppr‘𝑆) ∈ Ring)
47		ringsrg 14059	. . . . . . . . 9 ⊢ ((oppr‘𝑆) ∈ Ring → (oppr‘𝑆) ∈ SRing)
48	46, 47	syl 14	. . . . . . . 8 ⊢ (𝜑 → (oppr‘𝑆) ∈ SRing)
49		eqidd 2232	. . . . . . . 8 ⊢ (𝜑 → (.r‘(oppr‘𝑆)) = (.r‘(oppr‘𝑆)))
50	43, 44, 48, 49	dvdsrd 14107	. . . . . . 7 ⊢ (𝜑 → (𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅) ↔ (𝑥 ∈ (Base‘𝑅) ∧ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r‘(oppr‘𝑆))𝑥) = (1r‘𝑅))))
51	34, 37, 50	3bitr4d 220	. . . . . 6 ⊢ (𝜑 → (𝑥(∥r‘𝑅)(1r‘𝑅) ↔ 𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅)))
52	51	anbi1d 465	. . . . 5 ⊢ (𝜑 → ((𝑥(∥r‘𝑅)(1r‘𝑅) ∧ 𝑥(∥r‘𝑆)(1r‘𝑅)) ↔ (𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅) ∧ 𝑥(∥r‘𝑆)(1r‘𝑅))))
53	9, 52	bitrd 188	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝑈 ↔ (𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅) ∧ 𝑥(∥r‘𝑆)(1r‘𝑅))))
54	53	biancomd 271	. . 3 ⊢ (𝜑 → (𝑥 ∈ 𝑈 ↔ (𝑥(∥r‘𝑆)(1r‘𝑅) ∧ 𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅))))
55		eqidd 2232	. . . 4 ⊢ (𝜑 → (Unit‘𝑆) = (Unit‘𝑆))
56		eqid 2231	. . . . . . 7 ⊢ (1r‘𝑅) = (1r‘𝑅)
57	10, 56	oppr1g 14094	. . . . . 6 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) = (1r‘(oppr‘𝑅)))
58	6, 57	syl 14	. . . . 5 ⊢ (𝜑 → (1r‘𝑅) = (1r‘(oppr‘𝑅)))
59	4	fveq2d 5643	. . . . 5 ⊢ (𝜑 → (1r‘𝑆) = (1r‘(oppr‘𝑅)))
60	58, 59	eqtr4d 2267	. . . 4 ⊢ (𝜑 → (1r‘𝑅) = (1r‘𝑆))
61		eqidd 2232	. . . 4 ⊢ (𝜑 → (oppr‘𝑆) = (oppr‘𝑆))
62		ringsrg 14059	. . . . 5 ⊢ (𝑆 ∈ Ring → 𝑆 ∈ SRing)
63	13, 62	syl 14	. . . 4 ⊢ (𝜑 → 𝑆 ∈ SRing)
64	55, 60, 5, 61, 44, 63	isunitd 14119	. . 3 ⊢ (𝜑 → (𝑥 ∈ (Unit‘𝑆) ↔ (𝑥(∥r‘𝑆)(1r‘𝑅) ∧ 𝑥(∥r‘(oppr‘𝑆))(1r‘𝑅))))
65	54, 64	bitr4d 191	. 2 ⊢ (𝜑 → (𝑥 ∈ 𝑈 ↔ 𝑥 ∈ (Unit‘𝑆)))
66	65	eqrdv 2229	1 ⊢ (𝜑 → 𝑈 = (Unit‘𝑆))

Syntax hints:   → wi 4   ∧ wa 104   = wceq 1397   ∈ wcel 2202  ∃wrex 2511  Vcvv 2802   class class class wbr 4088  ‘cfv 5326  (class class class)co 6017  Basecbs 13081  ._rcmulr 13160  1_rcur 13971  SRingcsrg 13975  Ringcrg 14008  opp_rcoppr 14079  ∥_rcdsr 14098  Unitcui 14099

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-addass 8133  ax-i2m1 8136  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-pre-ltirr 8143  ax-pre-lttrn 8145  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rmo 2518  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-tpos 6410  df-pnf 8215  df-mnf 8216  df-ltxr 8218  df-inn 9143  df-2 9201  df-3 9202  df-ndx 13084  df-slot 13085  df-base 13087  df-sets 13088  df-plusg 13172  df-mulr 13173  df-0g 13340  df-mgm 13438  df-sgrp 13484  df-mnd 13499  df-grp 13585  df-minusg 13586  df-cmn 13872  df-abl 13873  df-mgp 13933  df-ur 13972  df-srg 13976  df-ring 14010  df-oppr 14080  df-dvdsr 14101  df-unit 14102

This theorem is referenced by: (None)