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Theorem idlinsubrg 33514
Description: The intersection between an ideal and a subring is an ideal of the subring. (Contributed by Thierry Arnoux, 6-Jul-2024.)
Hypotheses
Ref Expression
idlinsubrg.s 𝑆 = (𝑅s 𝐴)
idlinsubrg.u 𝑈 = (LIdeal‘𝑅)
idlinsubrg.v 𝑉 = (LIdeal‘𝑆)
Assertion
Ref Expression
idlinsubrg ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (𝐼𝐴) ∈ 𝑉)

Proof of Theorem idlinsubrg
Dummy variables 𝑎 𝑏 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 inss2 4166 . . . 4 (𝐼𝐴) ⊆ 𝐴
2 idlinsubrg.s . . . . 5 𝑆 = (𝑅s 𝐴)
32subrgbas 20553 . . . 4 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘𝑆))
41, 3sseqtrid 3957 . . 3 (𝐴 ∈ (SubRing‘𝑅) → (𝐼𝐴) ⊆ (Base‘𝑆))
54adantr 481 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (𝐼𝐴) ⊆ (Base‘𝑆))
6 subrgrcl 20548 . . . . 5 (𝐴 ∈ (SubRing‘𝑅) → 𝑅 ∈ Ring)
7 idlinsubrg.u . . . . . 6 𝑈 = (LIdeal‘𝑅)
8 eqid 2739 . . . . . 6 (0g𝑅) = (0g𝑅)
97, 8lidl0cl 21213 . . . . 5 ((𝑅 ∈ Ring ∧ 𝐼𝑈) → (0g𝑅) ∈ 𝐼)
106, 9sylan 586 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (0g𝑅) ∈ 𝐼)
11 subrgsubg 20549 . . . . . 6 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ∈ (SubGrp‘𝑅))
12 subgsubm 19115 . . . . . 6 (𝐴 ∈ (SubGrp‘𝑅) → 𝐴 ∈ (SubMnd‘𝑅))
138subm0cl 18770 . . . . . 6 (𝐴 ∈ (SubMnd‘𝑅) → (0g𝑅) ∈ 𝐴)
1411, 12, 133syl 18 . . . . 5 (𝐴 ∈ (SubRing‘𝑅) → (0g𝑅) ∈ 𝐴)
1514adantr 481 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (0g𝑅) ∈ 𝐴)
1610, 15elind 4129 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (0g𝑅) ∈ (𝐼𝐴))
1716ne0d 4270 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (𝐼𝐴) ≠ ∅)
18 eqid 2739 . . . . . . . . 9 (+g𝑅) = (+g𝑅)
192, 18ressplusg 17245 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → (+g𝑅) = (+g𝑆))
20 eqid 2739 . . . . . . . . . 10 (.r𝑅) = (.r𝑅)
212, 20ressmulr 17261 . . . . . . . . 9 (𝐴 ∈ (SubRing‘𝑅) → (.r𝑅) = (.r𝑆))
2221oveqd 7373 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → (𝑥(.r𝑅)𝑎) = (𝑥(.r𝑆)𝑎))
23 eqidd 2740 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → 𝑏 = 𝑏)
2419, 22, 23oveq123d 7377 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) = ((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏))
2524ad4antr 738 . . . . . 6 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) = ((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏))
266ad4antr 738 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑅 ∈ Ring)
27 simp-4r 789 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝐼𝑈)
28 eqid 2739 . . . . . . . . . . . . . 14 (Base‘𝑅) = (Base‘𝑅)
2928subrgss 20544 . . . . . . . . . . . . 13 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
303, 29eqsstrrd 3950 . . . . . . . . . . . 12 (𝐴 ∈ (SubRing‘𝑅) → (Base‘𝑆) ⊆ (Base‘𝑅))
3130adantr 481 . . . . . . . . . . 11 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (Base‘𝑆) ⊆ (Base‘𝑅))
3231sselda 3915 . . . . . . . . . 10 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑅))
3332ad2antrr 732 . . . . . . . . 9 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑥 ∈ (Base‘𝑅))
34 inss1 4165 . . . . . . . . . . . 12 (𝐼𝐴) ⊆ 𝐼
3534a1i 11 . . . . . . . . . . 11 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → (𝐼𝐴) ⊆ 𝐼)
3635sselda 3915 . . . . . . . . . 10 ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) → 𝑎𝐼)
3736adantr 481 . . . . . . . . 9 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑎𝐼)
387, 28, 20lidlmcl 21218 . . . . . . . . 9 (((𝑅 ∈ Ring ∧ 𝐼𝑈) ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑎𝐼)) → (𝑥(.r𝑅)𝑎) ∈ 𝐼)
3926, 27, 33, 37, 38syl22anc 844 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → (𝑥(.r𝑅)𝑎) ∈ 𝐼)
4034a1i 11 . . . . . . . . 9 ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) → (𝐼𝐴) ⊆ 𝐼)
4140sselda 3915 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑏𝐼)
427, 18lidlacl 21214 . . . . . . . 8 (((𝑅 ∈ Ring ∧ 𝐼𝑈) ∧ ((𝑥(.r𝑅)𝑎) ∈ 𝐼𝑏𝐼)) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) ∈ 𝐼)
4326, 27, 39, 41, 42syl22anc 844 . . . . . . 7 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) ∈ 𝐼)
44 simp-4l 788 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝐴 ∈ (SubRing‘𝑅))
45 simpr 485 . . . . . . . . . . 11 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥 ∈ (Base‘𝑆))
463ad2antrr 732 . . . . . . . . . . 11 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝐴 = (Base‘𝑆))
4745, 46eleqtrrd 2842 . . . . . . . . . 10 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → 𝑥𝐴)
4847ad2antrr 732 . . . . . . . . 9 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑥𝐴)
491a1i 11 . . . . . . . . . . 11 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → (𝐼𝐴) ⊆ 𝐴)
5049sselda 3915 . . . . . . . . . 10 ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) → 𝑎𝐴)
5150adantr 481 . . . . . . . . 9 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑎𝐴)
5220subrgmcl 20556 . . . . . . . . 9 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝑥𝐴𝑎𝐴) → (𝑥(.r𝑅)𝑎) ∈ 𝐴)
5344, 48, 51, 52syl3anc 1379 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → (𝑥(.r𝑅)𝑎) ∈ 𝐴)
541a1i 11 . . . . . . . . 9 ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) → (𝐼𝐴) ⊆ 𝐴)
5554sselda 3915 . . . . . . . 8 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → 𝑏𝐴)
5618subrgacl 20555 . . . . . . . 8 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝑥(.r𝑅)𝑎) ∈ 𝐴𝑏𝐴) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) ∈ 𝐴)
5744, 53, 55, 56syl3anc 1379 . . . . . . 7 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) ∈ 𝐴)
5843, 57elind 4129 . . . . . 6 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → ((𝑥(.r𝑅)𝑎)(+g𝑅)𝑏) ∈ (𝐼𝐴))
5925, 58eqeltrrd 2840 . . . . 5 (((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ 𝑎 ∈ (𝐼𝐴)) ∧ 𝑏 ∈ (𝐼𝐴)) → ((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏) ∈ (𝐼𝐴))
6059anasss 467 . . . 4 ((((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) ∧ (𝑎 ∈ (𝐼𝐴) ∧ 𝑏 ∈ (𝐼𝐴))) → ((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏) ∈ (𝐼𝐴))
6160ralrimivva 3182 . . 3 (((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) ∧ 𝑥 ∈ (Base‘𝑆)) → ∀𝑎 ∈ (𝐼𝐴)∀𝑏 ∈ (𝐼𝐴)((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏) ∈ (𝐼𝐴))
6261ralrimiva 3131 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → ∀𝑥 ∈ (Base‘𝑆)∀𝑎 ∈ (𝐼𝐴)∀𝑏 ∈ (𝐼𝐴)((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏) ∈ (𝐼𝐴))
63 idlinsubrg.v . . 3 𝑉 = (LIdeal‘𝑆)
64 eqid 2739 . . 3 (Base‘𝑆) = (Base‘𝑆)
65 eqid 2739 . . 3 (+g𝑆) = (+g𝑆)
66 eqid 2739 . . 3 (.r𝑆) = (.r𝑆)
6763, 64, 65, 66islidl 21208 . 2 ((𝐼𝐴) ∈ 𝑉 ↔ ((𝐼𝐴) ⊆ (Base‘𝑆) ∧ (𝐼𝐴) ≠ ∅ ∧ ∀𝑥 ∈ (Base‘𝑆)∀𝑎 ∈ (𝐼𝐴)∀𝑏 ∈ (𝐼𝐴)((𝑥(.r𝑆)𝑎)(+g𝑆)𝑏) ∈ (𝐼𝐴)))
685, 17, 62, 67syl3anbrc 1350 1 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐼𝑈) → (𝐼𝐴) ∈ 𝑉)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396   = wceq 1547  wcel 2119  wne 2934  wral 3053  cin 3882  wss 3883  c0 4261  cfv 6485  (class class class)co 7356  Basecbs 17170  s cress 17191  +gcplusg 17211  .rcmulr 17212  0gc0g 17393  SubMndcsubmnd 18741  SubGrpcsubg 19087  Ringcrg 20205  SubRingcsubrg 20541  LIdealclidl 21199
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2711  ax-rep 5199  ax-sep 5218  ax-nul 5228  ax-pow 5294  ax-pr 5362  ax-un 7678  ax-cnex 11085  ax-resscn 11086  ax-1cn 11087  ax-icn 11088  ax-addcl 11089  ax-addrcl 11090  ax-mulcl 11091  ax-mulrcl 11092  ax-mulcom 11093  ax-addass 11094  ax-mulass 11095  ax-distr 11096  ax-i2m1 11097  ax-1ne0 11098  ax-1rid 11099  ax-rnegex 11100  ax-rrecex 11101  ax-cnre 11102  ax-pre-lttri 11103  ax-pre-lttrn 11104  ax-pre-ltadd 11105  ax-pre-mulgt0 11106
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3or 1093  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2718  df-cleq 2731  df-clel 2814  df-nfc 2888  df-ne 2935  df-nel 3039  df-ral 3054  df-rex 3064  df-rmo 3344  df-reu 3345  df-rab 3392  df-v 3433  df-sbc 3724  df-csb 3832  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3903  df-nul 4262  df-if 4455  df-pw 4531  df-sn 4556  df-pr 4558  df-op 4562  df-uni 4839  df-iun 4923  df-br 5073  df-opab 5135  df-mpt 5154  df-tr 5180  df-id 5513  df-eprel 5518  df-po 5526  df-so 5527  df-fr 5571  df-we 5573  df-xp 5624  df-rel 5625  df-cnv 5626  df-co 5627  df-dm 5628  df-rn 5629  df-res 5630  df-ima 5631  df-pred 6252  df-ord 6313  df-on 6314  df-lim 6315  df-suc 6316  df-iota 6441  df-fun 6487  df-fn 6488  df-f 6489  df-f1 6490  df-fo 6491  df-f1o 6492  df-fv 6493  df-riota 7313  df-ov 7359  df-oprab 7360  df-mpo 7361  df-om 7807  df-1st 7931  df-2nd 7932  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-er 8633  df-en 8884  df-dom 8885  df-sdom 8886  df-pnf 11172  df-mnf 11173  df-xr 11174  df-ltxr 11175  df-le 11176  df-sub 11370  df-neg 11371  df-nn 12166  df-2 12235  df-3 12236  df-4 12237  df-5 12238  df-6 12239  df-7 12240  df-8 12241  df-sets 17125  df-slot 17143  df-ndx 17155  df-base 17171  df-ress 17192  df-plusg 17224  df-mulr 17225  df-sca 17227  df-vsca 17228  df-ip 17229  df-0g 17395  df-mgm 18599  df-sgrp 18678  df-mnd 18694  df-submnd 18743  df-grp 18903  df-minusg 18904  df-sbg 18905  df-subg 19090  df-cmn 19748  df-abl 19749  df-mgp 20113  df-rng 20125  df-ur 20154  df-ring 20207  df-subrng 20518  df-subrg 20542  df-lmod 20852  df-lss 20922  df-sra 21163  df-rgmod 21164  df-lidl 21201
This theorem is referenced by: (None)
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