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Theorem unitgrp 18433
Description: The group of units is a group under multiplication. (Contributed by Mario Carneiro, 2-Dec-2014.)
Hypotheses
Ref Expression
unitmulcl.1 𝑈 = (Unit‘𝑅)
unitgrp.2 𝐺 = ((mulGrp‘𝑅) ↾s 𝑈)
Assertion
Ref Expression
unitgrp (𝑅 ∈ Ring → 𝐺 ∈ Grp)

Proof of Theorem unitgrp
Dummy variables 𝑥 𝑦 𝑧 𝑚 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 unitmulcl.1 . . . 4 𝑈 = (Unit‘𝑅)
2 unitgrp.2 . . . 4 𝐺 = ((mulGrp‘𝑅) ↾s 𝑈)
31, 2unitgrpbas 18432 . . 3 𝑈 = (Base‘𝐺)
43a1i 11 . 2 (𝑅 ∈ Ring → 𝑈 = (Base‘𝐺))
5 fvex 6095 . . . 4 (Base‘𝐺) ∈ V
63, 5eqeltri 2680 . . 3 𝑈 ∈ V
7 eqid 2606 . . . . 5 (mulGrp‘𝑅) = (mulGrp‘𝑅)
8 eqid 2606 . . . . 5 (.r𝑅) = (.r𝑅)
97, 8mgpplusg 18259 . . . 4 (.r𝑅) = (+g‘(mulGrp‘𝑅))
102, 9ressplusg 15761 . . 3 (𝑈 ∈ V → (.r𝑅) = (+g𝐺))
116, 10mp1i 13 . 2 (𝑅 ∈ Ring → (.r𝑅) = (+g𝐺))
121, 8unitmulcl 18430 . 2 ((𝑅 ∈ Ring ∧ 𝑥𝑈𝑦𝑈) → (𝑥(.r𝑅)𝑦) ∈ 𝑈)
13 eqid 2606 . . . . 5 (Base‘𝑅) = (Base‘𝑅)
1413, 1unitcl 18425 . . . 4 (𝑥𝑈𝑥 ∈ (Base‘𝑅))
1513, 1unitcl 18425 . . . 4 (𝑦𝑈𝑦 ∈ (Base‘𝑅))
1613, 1unitcl 18425 . . . 4 (𝑧𝑈𝑧 ∈ (Base‘𝑅))
1714, 15, 163anim123i 1239 . . 3 ((𝑥𝑈𝑦𝑈𝑧𝑈) → (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅) ∧ 𝑧 ∈ (Base‘𝑅)))
1813, 8ringass 18330 . . 3 ((𝑅 ∈ Ring ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅) ∧ 𝑧 ∈ (Base‘𝑅))) → ((𝑥(.r𝑅)𝑦)(.r𝑅)𝑧) = (𝑥(.r𝑅)(𝑦(.r𝑅)𝑧)))
1917, 18sylan2 489 . 2 ((𝑅 ∈ Ring ∧ (𝑥𝑈𝑦𝑈𝑧𝑈)) → ((𝑥(.r𝑅)𝑦)(.r𝑅)𝑧) = (𝑥(.r𝑅)(𝑦(.r𝑅)𝑧)))
20 eqid 2606 . . 3 (1r𝑅) = (1r𝑅)
211, 201unit 18424 . 2 (𝑅 ∈ Ring → (1r𝑅) ∈ 𝑈)
2213, 8, 20ringlidm 18337 . . 3 ((𝑅 ∈ Ring ∧ 𝑥 ∈ (Base‘𝑅)) → ((1r𝑅)(.r𝑅)𝑥) = 𝑥)
2314, 22sylan2 489 . 2 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ((1r𝑅)(.r𝑅)𝑥) = 𝑥)
24 simpr 475 . . . 4 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → 𝑥𝑈)
25 eqid 2606 . . . . 5 (∥r𝑅) = (∥r𝑅)
26 eqid 2606 . . . . 5 (oppr𝑅) = (oppr𝑅)
27 eqid 2606 . . . . 5 (∥r‘(oppr𝑅)) = (∥r‘(oppr𝑅))
281, 20, 25, 26, 27isunit 18423 . . . 4 (𝑥𝑈 ↔ (𝑥(∥r𝑅)(1r𝑅) ∧ 𝑥(∥r‘(oppr𝑅))(1r𝑅)))
2924, 28sylib 206 . . 3 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → (𝑥(∥r𝑅)(1r𝑅) ∧ 𝑥(∥r‘(oppr𝑅))(1r𝑅)))
3014adantl 480 . . . . . 6 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → 𝑥 ∈ (Base‘𝑅))
3113, 25, 8dvdsr2 18413 . . . . . 6 (𝑥 ∈ (Base‘𝑅) → (𝑥(∥r𝑅)(1r𝑅) ↔ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r𝑅)𝑥) = (1r𝑅)))
3230, 31syl 17 . . . . 5 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → (𝑥(∥r𝑅)(1r𝑅) ↔ ∃𝑦 ∈ (Base‘𝑅)(𝑦(.r𝑅)𝑥) = (1r𝑅)))
3326, 13opprbas 18395 . . . . . . 7 (Base‘𝑅) = (Base‘(oppr𝑅))
34 eqid 2606 . . . . . . 7 (.r‘(oppr𝑅)) = (.r‘(oppr𝑅))
3533, 27, 34dvdsr2 18413 . . . . . 6 (𝑥 ∈ (Base‘𝑅) → (𝑥(∥r‘(oppr𝑅))(1r𝑅) ↔ ∃𝑚 ∈ (Base‘𝑅)(𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))
3630, 35syl 17 . . . . 5 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → (𝑥(∥r‘(oppr𝑅))(1r𝑅) ↔ ∃𝑚 ∈ (Base‘𝑅)(𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))
3732, 36anbi12d 742 . . . 4 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ((𝑥(∥r𝑅)(1r𝑅) ∧ 𝑥(∥r‘(oppr𝑅))(1r𝑅)) ↔ (∃𝑦 ∈ (Base‘𝑅)(𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ ∃𝑚 ∈ (Base‘𝑅)(𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅))))
38 reeanv 3082 . . . . 5 (∃𝑦 ∈ (Base‘𝑅)∃𝑚 ∈ (Base‘𝑅)((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)) ↔ (∃𝑦 ∈ (Base‘𝑅)(𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ ∃𝑚 ∈ (Base‘𝑅)(𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))
39 simprl 789 . . . . . . . . . . . 12 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑚 ∈ (Base‘𝑅))
4030ad2antrr 757 . . . . . . . . . . . 12 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑥 ∈ (Base‘𝑅))
4113, 25, 8dvdsrmul 18414 . . . . . . . . . . . 12 ((𝑚 ∈ (Base‘𝑅) ∧ 𝑥 ∈ (Base‘𝑅)) → 𝑚(∥r𝑅)(𝑥(.r𝑅)𝑚))
4239, 40, 41syl2anc 690 . . . . . . . . . . 11 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑚(∥r𝑅)(𝑥(.r𝑅)𝑚))
43 simplll 793 . . . . . . . . . . . . . 14 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑅 ∈ Ring)
44 simplr 787 . . . . . . . . . . . . . 14 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑦 ∈ (Base‘𝑅))
4513, 8ringass 18330 . . . . . . . . . . . . . 14 ((𝑅 ∈ Ring ∧ (𝑦 ∈ (Base‘𝑅) ∧ 𝑥 ∈ (Base‘𝑅) ∧ 𝑚 ∈ (Base‘𝑅))) → ((𝑦(.r𝑅)𝑥)(.r𝑅)𝑚) = (𝑦(.r𝑅)(𝑥(.r𝑅)𝑚)))
4643, 44, 40, 39, 45syl13anc 1319 . . . . . . . . . . . . 13 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → ((𝑦(.r𝑅)𝑥)(.r𝑅)𝑚) = (𝑦(.r𝑅)(𝑥(.r𝑅)𝑚)))
47 simprrl 799 . . . . . . . . . . . . . 14 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑦(.r𝑅)𝑥) = (1r𝑅))
4847oveq1d 6539 . . . . . . . . . . . . 13 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → ((𝑦(.r𝑅)𝑥)(.r𝑅)𝑚) = ((1r𝑅)(.r𝑅)𝑚))
4913, 8, 26, 34opprmul 18392 . . . . . . . . . . . . . . 15 (𝑚(.r‘(oppr𝑅))𝑥) = (𝑥(.r𝑅)𝑚)
50 simprrr 800 . . . . . . . . . . . . . . 15 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅))
5149, 50syl5eqr 2654 . . . . . . . . . . . . . 14 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑥(.r𝑅)𝑚) = (1r𝑅))
5251oveq2d 6540 . . . . . . . . . . . . 13 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑦(.r𝑅)(𝑥(.r𝑅)𝑚)) = (𝑦(.r𝑅)(1r𝑅)))
5346, 48, 523eqtr3d 2648 . . . . . . . . . . . 12 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → ((1r𝑅)(.r𝑅)𝑚) = (𝑦(.r𝑅)(1r𝑅)))
5413, 8, 20ringlidm 18337 . . . . . . . . . . . . 13 ((𝑅 ∈ Ring ∧ 𝑚 ∈ (Base‘𝑅)) → ((1r𝑅)(.r𝑅)𝑚) = 𝑚)
5543, 39, 54syl2anc 690 . . . . . . . . . . . 12 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → ((1r𝑅)(.r𝑅)𝑚) = 𝑚)
5613, 8, 20ringridm 18338 . . . . . . . . . . . . 13 ((𝑅 ∈ Ring ∧ 𝑦 ∈ (Base‘𝑅)) → (𝑦(.r𝑅)(1r𝑅)) = 𝑦)
5743, 44, 56syl2anc 690 . . . . . . . . . . . 12 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑦(.r𝑅)(1r𝑅)) = 𝑦)
5853, 55, 573eqtr3d 2648 . . . . . . . . . . 11 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑚 = 𝑦)
5942, 58, 513brtr3d 4605 . . . . . . . . . 10 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑦(∥r𝑅)(1r𝑅))
6033, 27, 34dvdsrmul 18414 . . . . . . . . . . . 12 ((𝑦 ∈ (Base‘𝑅) ∧ 𝑥 ∈ (Base‘𝑅)) → 𝑦(∥r‘(oppr𝑅))(𝑥(.r‘(oppr𝑅))𝑦))
6144, 40, 60syl2anc 690 . . . . . . . . . . 11 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑦(∥r‘(oppr𝑅))(𝑥(.r‘(oppr𝑅))𝑦))
6213, 8, 26, 34opprmul 18392 . . . . . . . . . . . 12 (𝑥(.r‘(oppr𝑅))𝑦) = (𝑦(.r𝑅)𝑥)
6362, 47syl5eq 2652 . . . . . . . . . . 11 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑥(.r‘(oppr𝑅))𝑦) = (1r𝑅))
6461, 63breqtrd 4600 . . . . . . . . . 10 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑦(∥r‘(oppr𝑅))(1r𝑅))
651, 20, 25, 26, 27isunit 18423 . . . . . . . . . 10 (𝑦𝑈 ↔ (𝑦(∥r𝑅)(1r𝑅) ∧ 𝑦(∥r‘(oppr𝑅))(1r𝑅)))
6659, 64, 65sylanbrc 694 . . . . . . . . 9 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → 𝑦𝑈)
6766, 47jca 552 . . . . . . . 8 ((((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) ∧ (𝑚 ∈ (Base‘𝑅) ∧ ((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)))) → (𝑦𝑈 ∧ (𝑦(.r𝑅)𝑥) = (1r𝑅)))
6867rexlimdvaa 3010 . . . . . . 7 (((𝑅 ∈ Ring ∧ 𝑥𝑈) ∧ 𝑦 ∈ (Base‘𝑅)) → (∃𝑚 ∈ (Base‘𝑅)((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)) → (𝑦𝑈 ∧ (𝑦(.r𝑅)𝑥) = (1r𝑅))))
6968expimpd 626 . . . . . 6 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ((𝑦 ∈ (Base‘𝑅) ∧ ∃𝑚 ∈ (Base‘𝑅)((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅))) → (𝑦𝑈 ∧ (𝑦(.r𝑅)𝑥) = (1r𝑅))))
7069reximdv2 2993 . . . . 5 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → (∃𝑦 ∈ (Base‘𝑅)∃𝑚 ∈ (Base‘𝑅)((𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ (𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)) → ∃𝑦𝑈 (𝑦(.r𝑅)𝑥) = (1r𝑅)))
7138, 70syl5bir 231 . . . 4 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ((∃𝑦 ∈ (Base‘𝑅)(𝑦(.r𝑅)𝑥) = (1r𝑅) ∧ ∃𝑚 ∈ (Base‘𝑅)(𝑚(.r‘(oppr𝑅))𝑥) = (1r𝑅)) → ∃𝑦𝑈 (𝑦(.r𝑅)𝑥) = (1r𝑅)))
7237, 71sylbid 228 . . 3 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ((𝑥(∥r𝑅)(1r𝑅) ∧ 𝑥(∥r‘(oppr𝑅))(1r𝑅)) → ∃𝑦𝑈 (𝑦(.r𝑅)𝑥) = (1r𝑅)))
7329, 72mpd 15 . 2 ((𝑅 ∈ Ring ∧ 𝑥𝑈) → ∃𝑦𝑈 (𝑦(.r𝑅)𝑥) = (1r𝑅))
744, 11, 12, 19, 21, 23, 73isgrpde 17209 1 (𝑅 ∈ Ring → 𝐺 ∈ Grp)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 194  wa 382  w3a 1030   = wceq 1474  wcel 1976  wrex 2893  Vcvv 3169   class class class wbr 4574  cfv 5787  (class class class)co 6524  Basecbs 15638  s cress 15639  +gcplusg 15711  .rcmulr 15712  Grpcgrp 17188  mulGrpcmgp 18255  1rcur 18267  Ringcrg 18313  opprcoppr 18388  rcdsr 18404  Unitcui 18405
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2032  ax-13 2229  ax-ext 2586  ax-rep 4690  ax-sep 4700  ax-nul 4709  ax-pow 4761  ax-pr 4825  ax-un 6821  ax-cnex 9845  ax-resscn 9846  ax-1cn 9847  ax-icn 9848  ax-addcl 9849  ax-addrcl 9850  ax-mulcl 9851  ax-mulrcl 9852  ax-mulcom 9853  ax-addass 9854  ax-mulass 9855  ax-distr 9856  ax-i2m1 9857  ax-1ne0 9858  ax-1rid 9859  ax-rnegex 9860  ax-rrecex 9861  ax-cnre 9862  ax-pre-lttri 9863  ax-pre-lttrn 9864  ax-pre-ltadd 9865  ax-pre-mulgt0 9866
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2458  df-mo 2459  df-clab 2593  df-cleq 2599  df-clel 2602  df-nfc 2736  df-ne 2778  df-nel 2779  df-ral 2897  df-rex 2898  df-reu 2899  df-rmo 2900  df-rab 2901  df-v 3171  df-sbc 3399  df-csb 3496  df-dif 3539  df-un 3541  df-in 3543  df-ss 3550  df-pss 3552  df-nul 3871  df-if 4033  df-pw 4106  df-sn 4122  df-pr 4124  df-tp 4126  df-op 4128  df-uni 4364  df-iun 4448  df-br 4575  df-opab 4635  df-mpt 4636  df-tr 4672  df-eprel 4936  df-id 4940  df-po 4946  df-so 4947  df-fr 4984  df-we 4986  df-xp 5031  df-rel 5032  df-cnv 5033  df-co 5034  df-dm 5035  df-rn 5036  df-res 5037  df-ima 5038  df-pred 5580  df-ord 5626  df-on 5627  df-lim 5628  df-suc 5629  df-iota 5751  df-fun 5789  df-fn 5790  df-f 5791  df-f1 5792  df-fo 5793  df-f1o 5794  df-fv 5795  df-riota 6486  df-ov 6527  df-oprab 6528  df-mpt2 6529  df-om 6932  df-tpos 7213  df-wrecs 7268  df-recs 7329  df-rdg 7367  df-er 7603  df-en 7816  df-dom 7817  df-sdom 7818  df-pnf 9929  df-mnf 9930  df-xr 9931  df-ltxr 9932  df-le 9933  df-sub 10116  df-neg 10117  df-nn 10865  df-2 10923  df-3 10924  df-ndx 15641  df-slot 15642  df-base 15643  df-sets 15644  df-ress 15645  df-plusg 15724  df-mulr 15725  df-0g 15868  df-mgm 17008  df-sgrp 17050  df-mnd 17061  df-grp 17191  df-mgp 18256  df-ur 18268  df-ring 18315  df-oppr 18389  df-dvdsr 18407  df-unit 18408
This theorem is referenced by:  unitabl  18434  unitsubm  18436  unitinvcl  18440  unitinvinv  18441  unitlinv  18443  unitrinv  18444  isdrng2  18523  subrgugrp  18565  expghm  19605  invrvald  20240  nrginvrcn  22236  nrgtdrg  22237  dchrfi  24694  dchrghm  24695  dchrabs  24699  dchrptlem1  24703  dchrptlem2  24704  dchrptlem3  24705  dchrsum2  24707  rdivmuldivd  28925  dvrcan5  28927  rhmunitinv  28956  idomodle  36593  proot1mul  36596  proot1hash  36597  proot1ex  36598
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