Theorem unitpropd 19449

Description: The set of units depends only on the ring's base set and multiplication operation. (Contributed by Mario Carneiro, 26-Dec-2014.)

Hypotheses

Ref	Expression
rngidpropd.1	⊢ (𝜑 → 𝐵 = (Base‘𝐾))
rngidpropd.2	⊢ (𝜑 → 𝐵 = (Base‘𝐿))
rngidpropd.3	⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(.r‘𝐿)𝑦))

Assertion

Ref	Expression
unitpropd	⊢ (𝜑 → (Unit‘𝐾) = (Unit‘𝐿))

Distinct variable groups:   𝑥,𝑦,𝐵   𝑥,𝐾,𝑦   𝑥,𝐿,𝑦   𝜑,𝑥,𝑦

Proof of Theorem unitpropd

Dummy variable 𝑧 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		rngidpropd.1	. . . . . . 7 ⊢ (𝜑 → 𝐵 = (Base‘𝐾))
2		rngidpropd.2	. . . . . . 7 ⊢ (𝜑 → 𝐵 = (Base‘𝐿))
3		rngidpropd.3	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(.r‘𝐿)𝑦))
4	1, 2, 3	rngidpropd 19447	. . . . . 6 ⊢ (𝜑 → (1r‘𝐾) = (1r‘𝐿))
5	4	breq2d 5080	. . . . 5 ⊢ (𝜑 → (𝑧(∥r‘𝐾)(1r‘𝐾) ↔ 𝑧(∥r‘𝐾)(1r‘𝐿)))
6	4	breq2d 5080	. . . . 5 ⊢ (𝜑 → (𝑧(∥r‘(oppr‘𝐾))(1r‘𝐾) ↔ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐿)))
7	5, 6	anbi12d 632	. . . 4 ⊢ (𝜑 → ((𝑧(∥r‘𝐾)(1r‘𝐾) ∧ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐾)) ↔ (𝑧(∥r‘𝐾)(1r‘𝐿) ∧ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐿))))
8	1, 2, 3	dvdsrpropd 19448	. . . . . 6 ⊢ (𝜑 → (∥r‘𝐾) = (∥r‘𝐿))
9	8	breqd 5079	. . . . 5 ⊢ (𝜑 → (𝑧(∥r‘𝐾)(1r‘𝐿) ↔ 𝑧(∥r‘𝐿)(1r‘𝐿)))
10		eqid 2823	. . . . . . . . 9 ⊢ (oppr‘𝐾) = (oppr‘𝐾)
11		eqid 2823	. . . . . . . . 9 ⊢ (Base‘𝐾) = (Base‘𝐾)
12	10, 11	opprbas 19381	. . . . . . . 8 ⊢ (Base‘𝐾) = (Base‘(oppr‘𝐾))
13	1, 12	syl6eq 2874	. . . . . . 7 ⊢ (𝜑 → 𝐵 = (Base‘(oppr‘𝐾)))
14		eqid 2823	. . . . . . . . 9 ⊢ (oppr‘𝐿) = (oppr‘𝐿)
15		eqid 2823	. . . . . . . . 9 ⊢ (Base‘𝐿) = (Base‘𝐿)
16	14, 15	opprbas 19381	. . . . . . . 8 ⊢ (Base‘𝐿) = (Base‘(oppr‘𝐿))
17	2, 16	syl6eq 2874	. . . . . . 7 ⊢ (𝜑 → 𝐵 = (Base‘(oppr‘𝐿)))
18	3	ancom2s 648	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(.r‘𝐿)𝑦))
19		eqid 2823	. . . . . . . . 9 ⊢ (.r‘𝐾) = (.r‘𝐾)
20		eqid 2823	. . . . . . . . 9 ⊢ (.r‘(oppr‘𝐾)) = (.r‘(oppr‘𝐾))
21	11, 19, 10, 20	opprmul 19378	. . . . . . . 8 ⊢ (𝑦(.r‘(oppr‘𝐾))𝑥) = (𝑥(.r‘𝐾)𝑦)
22		eqid 2823	. . . . . . . . 9 ⊢ (.r‘𝐿) = (.r‘𝐿)
23		eqid 2823	. . . . . . . . 9 ⊢ (.r‘(oppr‘𝐿)) = (.r‘(oppr‘𝐿))
24	15, 22, 14, 23	opprmul 19378	. . . . . . . 8 ⊢ (𝑦(.r‘(oppr‘𝐿))𝑥) = (𝑥(.r‘𝐿)𝑦)
25	18, 21, 24	3eqtr4g 2883	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵)) → (𝑦(.r‘(oppr‘𝐾))𝑥) = (𝑦(.r‘(oppr‘𝐿))𝑥))
26	13, 17, 25	dvdsrpropd 19448	. . . . . 6 ⊢ (𝜑 → (∥r‘(oppr‘𝐾)) = (∥r‘(oppr‘𝐿)))
27	26	breqd 5079	. . . . 5 ⊢ (𝜑 → (𝑧(∥r‘(oppr‘𝐾))(1r‘𝐿) ↔ 𝑧(∥r‘(oppr‘𝐿))(1r‘𝐿)))
28	9, 27	anbi12d 632	. . . 4 ⊢ (𝜑 → ((𝑧(∥r‘𝐾)(1r‘𝐿) ∧ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐿)) ↔ (𝑧(∥r‘𝐿)(1r‘𝐿) ∧ 𝑧(∥r‘(oppr‘𝐿))(1r‘𝐿))))
29	7, 28	bitrd 281	. . 3 ⊢ (𝜑 → ((𝑧(∥r‘𝐾)(1r‘𝐾) ∧ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐾)) ↔ (𝑧(∥r‘𝐿)(1r‘𝐿) ∧ 𝑧(∥r‘(oppr‘𝐿))(1r‘𝐿))))
30		eqid 2823	. . . 4 ⊢ (Unit‘𝐾) = (Unit‘𝐾)
31		eqid 2823	. . . 4 ⊢ (1r‘𝐾) = (1r‘𝐾)
32		eqid 2823	. . . 4 ⊢ (∥r‘𝐾) = (∥r‘𝐾)
33		eqid 2823	. . . 4 ⊢ (∥r‘(oppr‘𝐾)) = (∥r‘(oppr‘𝐾))
34	30, 31, 32, 10, 33	isunit 19409	. . 3 ⊢ (𝑧 ∈ (Unit‘𝐾) ↔ (𝑧(∥r‘𝐾)(1r‘𝐾) ∧ 𝑧(∥r‘(oppr‘𝐾))(1r‘𝐾)))
35		eqid 2823	. . . 4 ⊢ (Unit‘𝐿) = (Unit‘𝐿)
36		eqid 2823	. . . 4 ⊢ (1r‘𝐿) = (1r‘𝐿)
37		eqid 2823	. . . 4 ⊢ (∥r‘𝐿) = (∥r‘𝐿)
38		eqid 2823	. . . 4 ⊢ (∥r‘(oppr‘𝐿)) = (∥r‘(oppr‘𝐿))
39	35, 36, 37, 14, 38	isunit 19409	. . 3 ⊢ (𝑧 ∈ (Unit‘𝐿) ↔ (𝑧(∥r‘𝐿)(1r‘𝐿) ∧ 𝑧(∥r‘(oppr‘𝐿))(1r‘𝐿)))
40	29, 34, 39	3bitr4g 316	. 2 ⊢ (𝜑 → (𝑧 ∈ (Unit‘𝐾) ↔ 𝑧 ∈ (Unit‘𝐿)))
41	40	eqrdv 2821	1 ⊢ (𝜑 → (Unit‘𝐾) = (Unit‘𝐿))

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1537   ∈ wcel 2114   class class class wbr 5068  ‘cfv 6357  (class class class)co 7158  Basecbs 16485  ._rcmulr 16568  1_rcur 19253  opp_rcoppr 19374  ∥_rcdsr 19390  Unitcui 19391

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596  ax-1cn 10597  ax-icn 10598  ax-addcl 10599  ax-addrcl 10600  ax-mulcl 10601  ax-mulrcl 10602  ax-mulcom 10603  ax-addass 10604  ax-mulass 10605  ax-distr 10606  ax-i2m1 10607  ax-1ne0 10608  ax-1rid 10609  ax-rnegex 10610  ax-rrecex 10611  ax-cnre 10612  ax-pre-lttri 10613  ax-pre-lttrn 10614  ax-pre-ltadd 10615  ax-pre-mulgt0 10616

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-nel 3126  df-ral 3145  df-rex 3146  df-reu 3147  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-tpos 7894  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-er 8291  df-en 8512  df-dom 8513  df-sdom 8514  df-pnf 10679  df-mnf 10680  df-xr 10681  df-ltxr 10682  df-le 10683  df-sub 10874  df-neg 10875  df-nn 11641  df-2 11703  df-3 11704  df-ndx 16488  df-slot 16489  df-base 16491  df-sets 16492  df-plusg 16580  df-mulr 16581  df-0g 16717  df-mgp 19242  df-ur 19254  df-oppr 19375  df-dvdsr 19393  df-unit 19394

This theorem is referenced by:  invrpropd  19450  drngprop  19515  drngpropd  19531  sradrng  30990