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Theorem rngqiprngimf1 21253
Description: 𝐹 is a one-to-one function from (the base set of) a non-unital ring to the product of the (base set of the) quotient with a two-sided ideal and the (base set of the) two-sided ideal. (Contributed by AV, 7-Mar-2025.)
Hypotheses
Ref Expression
rng2idlring.r (𝜑𝑅 ∈ Rng)
rng2idlring.i (𝜑𝐼 ∈ (2Ideal‘𝑅))
rng2idlring.j 𝐽 = (𝑅s 𝐼)
rng2idlring.u (𝜑𝐽 ∈ Ring)
rng2idlring.b 𝐵 = (Base‘𝑅)
rng2idlring.t · = (.r𝑅)
rng2idlring.1 1 = (1r𝐽)
rngqiprngim.g = (𝑅 ~QG 𝐼)
rngqiprngim.q 𝑄 = (𝑅 /s )
rngqiprngim.c 𝐶 = (Base‘𝑄)
rngqiprngim.p 𝑃 = (𝑄 ×s 𝐽)
rngqiprngim.f 𝐹 = (𝑥𝐵 ↦ ⟨[𝑥] , ( 1 · 𝑥)⟩)
Assertion
Ref Expression
rngqiprngimf1 (𝜑𝐹:𝐵1-1→(𝐶 × 𝐼))
Distinct variable groups:   𝑥,𝐶   𝑥,𝐼   𝑥,𝐵   𝜑,𝑥   𝑥,   𝑥, 1   𝑥, ·   𝑥,𝑅
Allowed substitution hints:   𝑃(𝑥)   𝑄(𝑥)   𝐹(𝑥)   𝐽(𝑥)

Proof of Theorem rngqiprngimf1
Dummy variable 𝑎 is distinct from all other variables.
StepHypRef Expression
1 rng2idlring.r . . . . . . . . 9 (𝜑𝑅 ∈ Rng)
2 rng2idlring.i . . . . . . . . 9 (𝜑𝐼 ∈ (2Ideal‘𝑅))
3 rng2idlring.j . . . . . . . . . . . 12 𝐽 = (𝑅s 𝐼)
4 rng2idlring.u . . . . . . . . . . . . 13 (𝜑𝐽 ∈ Ring)
5 ringrng 20218 . . . . . . . . . . . . 13 (𝐽 ∈ Ring → 𝐽 ∈ Rng)
64, 5syl 17 . . . . . . . . . . . 12 (𝜑𝐽 ∈ Rng)
73, 6eqeltrrid 2839 . . . . . . . . . . 11 (𝜑 → (𝑅s 𝐼) ∈ Rng)
81, 2, 7rng2idlnsg 21219 . . . . . . . . . 10 (𝜑𝐼 ∈ (NrmSGrp‘𝑅))
9 nsgsubg 19085 . . . . . . . . . 10 (𝐼 ∈ (NrmSGrp‘𝑅) → 𝐼 ∈ (SubGrp‘𝑅))
108, 9syl 17 . . . . . . . . 9 (𝜑𝐼 ∈ (SubGrp‘𝑅))
11 rngqiprngim.q . . . . . . . . . . 11 𝑄 = (𝑅 /s )
12 rngqiprngim.g . . . . . . . . . . . 12 = (𝑅 ~QG 𝐼)
1312oveq2i 7367 . . . . . . . . . . 11 (𝑅 /s ) = (𝑅 /s (𝑅 ~QG 𝐼))
1411, 13eqtri 2757 . . . . . . . . . 10 𝑄 = (𝑅 /s (𝑅 ~QG 𝐼))
15 eqid 2734 . . . . . . . . . 10 (2Ideal‘𝑅) = (2Ideal‘𝑅)
1614, 15qus2idrng 21226 . . . . . . . . 9 ((𝑅 ∈ Rng ∧ 𝐼 ∈ (2Ideal‘𝑅) ∧ 𝐼 ∈ (SubGrp‘𝑅)) → 𝑄 ∈ Rng)
171, 2, 10, 16syl3anc 1373 . . . . . . . 8 (𝜑𝑄 ∈ Rng)
18 rnggrp 20091 . . . . . . . . 9 (𝑄 ∈ Rng → 𝑄 ∈ Grp)
1918grpmndd 18874 . . . . . . . 8 (𝑄 ∈ Rng → 𝑄 ∈ Mnd)
2017, 19syl 17 . . . . . . 7 (𝜑𝑄 ∈ Mnd)
21 ringmnd 20176 . . . . . . . 8 (𝐽 ∈ Ring → 𝐽 ∈ Mnd)
224, 21syl 17 . . . . . . 7 (𝜑𝐽 ∈ Mnd)
23 rngqiprngim.p . . . . . . . 8 𝑃 = (𝑄 ×s 𝐽)
2423xpsmnd0 18701 . . . . . . 7 ((𝑄 ∈ Mnd ∧ 𝐽 ∈ Mnd) → (0g𝑃) = ⟨(0g𝑄), (0g𝐽)⟩)
2520, 22, 24syl2anc 584 . . . . . 6 (𝜑 → (0g𝑃) = ⟨(0g𝑄), (0g𝐽)⟩)
2625sneqd 4590 . . . . 5 (𝜑 → {(0g𝑃)} = {⟨(0g𝑄), (0g𝐽)⟩})
2726imaeq2d 6017 . . . 4 (𝜑 → (𝐹 “ {(0g𝑃)}) = (𝐹 “ {⟨(0g𝑄), (0g𝐽)⟩}))
28 nfv 1915 . . . . . 6 𝑥𝜑
29 opex 5410 . . . . . . 7 ⟨[𝑥] , ( 1 · 𝑥)⟩ ∈ V
3029a1i 11 . . . . . 6 ((𝜑𝑥𝐵) → ⟨[𝑥] , ( 1 · 𝑥)⟩ ∈ V)
31 rngqiprngim.f . . . . . 6 𝐹 = (𝑥𝐵 ↦ ⟨[𝑥] , ( 1 · 𝑥)⟩)
3228, 30, 31fnmptd 6631 . . . . 5 (𝜑𝐹 Fn 𝐵)
33 fncnvima2 7004 . . . . 5 (𝐹 Fn 𝐵 → (𝐹 “ {⟨(0g𝑄), (0g𝐽)⟩}) = {𝑎𝐵 ∣ (𝐹𝑎) ∈ {⟨(0g𝑄), (0g𝐽)⟩}})
3432, 33syl 17 . . . 4 (𝜑 → (𝐹 “ {⟨(0g𝑄), (0g𝐽)⟩}) = {𝑎𝐵 ∣ (𝐹𝑎) ∈ {⟨(0g𝑄), (0g𝐽)⟩}})
35 rng2idlring.b . . . . . . . 8 𝐵 = (Base‘𝑅)
36 rng2idlring.t . . . . . . . 8 · = (.r𝑅)
37 rng2idlring.1 . . . . . . . 8 1 = (1r𝐽)
38 rngqiprngim.c . . . . . . . 8 𝐶 = (Base‘𝑄)
391, 2, 3, 4, 35, 36, 37, 12, 11, 38, 23, 31rngqiprngimfv 21251 . . . . . . 7 ((𝜑𝑎𝐵) → (𝐹𝑎) = ⟨[𝑎] , ( 1 · 𝑎)⟩)
4039eleq1d 2819 . . . . . 6 ((𝜑𝑎𝐵) → ((𝐹𝑎) ∈ {⟨(0g𝑄), (0g𝐽)⟩} ↔ ⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩}))
4140rabbidva 3403 . . . . 5 (𝜑 → {𝑎𝐵 ∣ (𝐹𝑎) ∈ {⟨(0g𝑄), (0g𝐽)⟩}} = {𝑎𝐵 ∣ ⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩}})
42 eceq1 8672 . . . . . . . 8 (𝑎 = (0g𝑅) → [𝑎] = [(0g𝑅)] )
43 oveq2 7364 . . . . . . . 8 (𝑎 = (0g𝑅) → ( 1 · 𝑎) = ( 1 · (0g𝑅)))
4442, 43opeq12d 4835 . . . . . . 7 (𝑎 = (0g𝑅) → ⟨[𝑎] , ( 1 · 𝑎)⟩ = ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩)
4544eleq1d 2819 . . . . . 6 (𝑎 = (0g𝑅) → (⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩} ↔ ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩}))
46 rnggrp 20091 . . . . . . . . 9 (𝑅 ∈ Rng → 𝑅 ∈ Grp)
471, 46syl 17 . . . . . . . 8 (𝜑𝑅 ∈ Grp)
4847grpmndd 18874 . . . . . . 7 (𝜑𝑅 ∈ Mnd)
49 eqid 2734 . . . . . . . 8 (0g𝑅) = (0g𝑅)
5035, 49mndidcl 18672 . . . . . . 7 (𝑅 ∈ Mnd → (0g𝑅) ∈ 𝐵)
5148, 50syl 17 . . . . . 6 (𝜑 → (0g𝑅) ∈ 𝐵)
5212eceq2i 8675 . . . . . . . . 9 [(0g𝑅)] = [(0g𝑅)](𝑅 ~QG 𝐼)
5314, 49qus0 19116 . . . . . . . . . 10 (𝐼 ∈ (NrmSGrp‘𝑅) → [(0g𝑅)](𝑅 ~QG 𝐼) = (0g𝑄))
548, 53syl 17 . . . . . . . . 9 (𝜑 → [(0g𝑅)](𝑅 ~QG 𝐼) = (0g𝑄))
5552, 54eqtrid 2781 . . . . . . . 8 (𝜑 → [(0g𝑅)] = (0g𝑄))
561, 2, 7rng2idl0 21220 . . . . . . . . . . 11 (𝜑 → (0g𝑅) ∈ 𝐼)
5735, 152idlss 21215 . . . . . . . . . . . 12 (𝐼 ∈ (2Ideal‘𝑅) → 𝐼𝐵)
582, 57syl 17 . . . . . . . . . . 11 (𝜑𝐼𝐵)
593, 35, 49ress0g 18685 . . . . . . . . . . 11 ((𝑅 ∈ Mnd ∧ (0g𝑅) ∈ 𝐼𝐼𝐵) → (0g𝑅) = (0g𝐽))
6048, 56, 58, 59syl3anc 1373 . . . . . . . . . 10 (𝜑 → (0g𝑅) = (0g𝐽))
6160oveq2d 7372 . . . . . . . . 9 (𝜑 → ( 1 · (0g𝑅)) = ( 1 · (0g𝐽)))
623, 36ressmulr 17225 . . . . . . . . . . 11 (𝐼 ∈ (2Ideal‘𝑅) → · = (.r𝐽))
632, 62syl 17 . . . . . . . . . 10 (𝜑· = (.r𝐽))
6463oveqd 7373 . . . . . . . . 9 (𝜑 → ( 1 · (0g𝐽)) = ( 1 (.r𝐽)(0g𝐽)))
65 eqid 2734 . . . . . . . . . . 11 (Base‘𝐽) = (Base‘𝐽)
6665, 37ringidcl 20198 . . . . . . . . . 10 (𝐽 ∈ Ring → 1 ∈ (Base‘𝐽))
67 eqid 2734 . . . . . . . . . . 11 (.r𝐽) = (.r𝐽)
68 eqid 2734 . . . . . . . . . . 11 (0g𝐽) = (0g𝐽)
6965, 67, 68ringrz 20227 . . . . . . . . . 10 ((𝐽 ∈ Ring ∧ 1 ∈ (Base‘𝐽)) → ( 1 (.r𝐽)(0g𝐽)) = (0g𝐽))
704, 66, 69syl2anc2 585 . . . . . . . . 9 (𝜑 → ( 1 (.r𝐽)(0g𝐽)) = (0g𝐽))
7161, 64, 703eqtrd 2773 . . . . . . . 8 (𝜑 → ( 1 · (0g𝑅)) = (0g𝐽))
7255, 71opeq12d 4835 . . . . . . 7 (𝜑 → ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ = ⟨(0g𝑄), (0g𝐽)⟩)
73 opex 5410 . . . . . . . 8 ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ ∈ V
7473elsn 4593 . . . . . . 7 (⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩} ↔ ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ = ⟨(0g𝑄), (0g𝐽)⟩)
7572, 74sylibr 234 . . . . . 6 (𝜑 → ⟨[(0g𝑅)] , ( 1 · (0g𝑅))⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩})
76 opex 5410 . . . . . . . . . 10 ⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ V
7776elsn 4593 . . . . . . . . 9 (⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩} ↔ ⟨[𝑎] , ( 1 · 𝑎)⟩ = ⟨(0g𝑄), (0g𝐽)⟩)
7812ovexi 7390 . . . . . . . . . . 11 ∈ V
79 ecexg 8637 . . . . . . . . . . 11 ( ∈ V → [𝑎] ∈ V)
8078, 79ax-mp 5 . . . . . . . . . 10 [𝑎] ∈ V
81 ovex 7389 . . . . . . . . . 10 ( 1 · 𝑎) ∈ V
8280, 81opth 5422 . . . . . . . . 9 (⟨[𝑎] , ( 1 · 𝑎)⟩ = ⟨(0g𝑄), (0g𝐽)⟩ ↔ ([𝑎] = (0g𝑄) ∧ ( 1 · 𝑎) = (0g𝐽)))
8377, 82bitri 275 . . . . . . . 8 (⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩} ↔ ([𝑎] = (0g𝑄) ∧ ( 1 · 𝑎) = (0g𝐽)))
841, 2, 3, 4, 35, 36, 37, 12, 11rngqiprngimf1lem 21247 . . . . . . . 8 ((𝜑𝑎𝐵) → (([𝑎] = (0g𝑄) ∧ ( 1 · 𝑎) = (0g𝐽)) → 𝑎 = (0g𝑅)))
8583, 84biimtrid 242 . . . . . . 7 ((𝜑𝑎𝐵) → (⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩} → 𝑎 = (0g𝑅)))
8685imp 406 . . . . . 6 (((𝜑𝑎𝐵) ∧ ⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩}) → 𝑎 = (0g𝑅))
8745, 51, 75, 86rabeqsnd 4624 . . . . 5 (𝜑 → {𝑎𝐵 ∣ ⟨[𝑎] , ( 1 · 𝑎)⟩ ∈ {⟨(0g𝑄), (0g𝐽)⟩}} = {(0g𝑅)})
8841, 87eqtrd 2769 . . . 4 (𝜑 → {𝑎𝐵 ∣ (𝐹𝑎) ∈ {⟨(0g𝑄), (0g𝐽)⟩}} = {(0g𝑅)})
8927, 34, 883eqtrd 2773 . . 3 (𝜑 → (𝐹 “ {(0g𝑃)}) = {(0g𝑅)})
901, 2, 3, 4, 35, 36, 37, 12, 11, 38, 23, 31rngqiprngghm 21252 . . . 4 (𝜑𝐹 ∈ (𝑅 GrpHom 𝑃))
91 eqid 2734 . . . . 5 (Base‘𝑃) = (Base‘𝑃)
92 eqid 2734 . . . . 5 (0g𝑃) = (0g𝑃)
9335, 91, 49, 92kerf1ghm 19174 . . . 4 (𝐹 ∈ (𝑅 GrpHom 𝑃) → (𝐹:𝐵1-1→(Base‘𝑃) ↔ (𝐹 “ {(0g𝑃)}) = {(0g𝑅)}))
9490, 93syl 17 . . 3 (𝜑 → (𝐹:𝐵1-1→(Base‘𝑃) ↔ (𝐹 “ {(0g𝑃)}) = {(0g𝑅)}))
9589, 94mpbird 257 . 2 (𝜑𝐹:𝐵1-1→(Base‘𝑃))
96 eqidd 2735 . . 3 (𝜑𝐹 = 𝐹)
97 eqidd 2735 . . 3 (𝜑𝐵 = 𝐵)
981, 2, 3, 4, 35, 36, 37, 12, 11, 38, 23rngqipbas 21248 . . 3 (𝜑 → (Base‘𝑃) = (𝐶 × 𝐼))
9996, 97, 98f1eq123d 6764 . 2 (𝜑 → (𝐹:𝐵1-1→(Base‘𝑃) ↔ 𝐹:𝐵1-1→(𝐶 × 𝐼)))
10095, 99mpbid 232 1 (𝜑𝐹:𝐵1-1→(𝐶 × 𝐼))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1541  wcel 2113  {crab 3397  Vcvv 3438  wss 3899  {csn 4578  cop 4584  cmpt 5177   × cxp 5620  ccnv 5621  cima 5625   Fn wfn 6485  1-1wf1 6487  cfv 6490  (class class class)co 7356  [cec 8631  Basecbs 17134  s cress 17155  .rcmulr 17176  0gc0g 17357   /s cqus 17424   ×s cxps 17425  Mndcmnd 18657  Grpcgrp 18861  SubGrpcsubg 19048  NrmSGrpcnsg 19049   ~QG cqg 19050   GrpHom cghm 19139  Rngcrng 20085  1rcur 20114  Ringcrg 20166  2Idealc2idl 21202
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 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2706  ax-rep 5222  ax-sep 5239  ax-nul 5249  ax-pow 5308  ax-pr 5375  ax-un 7678  ax-cnex 11080  ax-resscn 11081  ax-1cn 11082  ax-icn 11083  ax-addcl 11084  ax-addrcl 11085  ax-mulcl 11086  ax-mulrcl 11087  ax-mulcom 11088  ax-addass 11089  ax-mulass 11090  ax-distr 11091  ax-i2m1 11092  ax-1ne0 11093  ax-1rid 11094  ax-rnegex 11095  ax-rrecex 11096  ax-cnre 11097  ax-pre-lttri 11098  ax-pre-lttrn 11099  ax-pre-ltadd 11100  ax-pre-mulgt0 11101
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ne 2931  df-nel 3035  df-ral 3050  df-rex 3059  df-rmo 3348  df-reu 3349  df-rab 3398  df-v 3440  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4579  df-pr 4581  df-tp 4583  df-op 4585  df-uni 4862  df-iun 4946  df-br 5097  df-opab 5159  df-mpt 5178  df-tr 5204  df-id 5517  df-eprel 5522  df-po 5530  df-so 5531  df-fr 5575  df-we 5577  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-pred 6257  df-ord 6318  df-on 6319  df-lim 6320  df-suc 6321  df-iota 6446  df-fun 6492  df-fn 6493  df-f 6494  df-f1 6495  df-fo 6496  df-f1o 6497  df-fv 6498  df-riota 7313  df-ov 7359  df-oprab 7360  df-mpo 7361  df-om 7807  df-1st 7931  df-2nd 7932  df-tpos 8166  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-1o 8395  df-2o 8396  df-er 8633  df-ec 8635  df-qs 8639  df-map 8763  df-ixp 8834  df-en 8882  df-dom 8883  df-sdom 8884  df-fin 8885  df-sup 9343  df-inf 9344  df-pnf 11166  df-mnf 11167  df-xr 11168  df-ltxr 11169  df-le 11170  df-sub 11364  df-neg 11365  df-nn 12144  df-2 12206  df-3 12207  df-4 12208  df-5 12209  df-6 12210  df-7 12211  df-8 12212  df-9 12213  df-n0 12400  df-z 12487  df-dec 12606  df-uz 12750  df-fz 13422  df-struct 17072  df-sets 17089  df-slot 17107  df-ndx 17119  df-base 17135  df-ress 17156  df-plusg 17188  df-mulr 17189  df-sca 17191  df-vsca 17192  df-ip 17193  df-tset 17194  df-ple 17195  df-ds 17197  df-hom 17199  df-cco 17200  df-0g 17359  df-prds 17365  df-imas 17427  df-qus 17428  df-xps 17429  df-mgm 18563  df-sgrp 18642  df-mnd 18658  df-grp 18864  df-minusg 18865  df-sbg 18866  df-subg 19051  df-nsg 19052  df-eqg 19053  df-ghm 19140  df-cmn 19709  df-abl 19710  df-mgp 20074  df-rng 20086  df-ur 20115  df-ring 20168  df-oppr 20271  df-dvdsr 20291  df-unit 20292  df-invr 20322  df-subrng 20477  df-lss 20881  df-sra 21123  df-rgmod 21124  df-lidl 21161  df-2idl 21203
This theorem is referenced by:  rngqiprngim  21257
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