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Theorem subsubrg 20048
Description: A subring of a subring is a subring. (Contributed by Mario Carneiro, 4-Dec-2014.)
Hypothesis
Ref Expression
subsubrg.s 𝑆 = (𝑅s 𝐴)
Assertion
Ref Expression
subsubrg (𝐴 ∈ (SubRing‘𝑅) → (𝐵 ∈ (SubRing‘𝑆) ↔ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)))

Proof of Theorem subsubrg
StepHypRef Expression
1 subrgrcl 20027 . . . . 5 (𝐴 ∈ (SubRing‘𝑅) → 𝑅 ∈ Ring)
21adantr 481 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝑅 ∈ Ring)
3 eqid 2740 . . . . . . . . 9 (Base‘𝑆) = (Base‘𝑆)
43subrgss 20023 . . . . . . . 8 (𝐵 ∈ (SubRing‘𝑆) → 𝐵 ⊆ (Base‘𝑆))
54adantl 482 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑆))
6 subsubrg.s . . . . . . . . 9 𝑆 = (𝑅s 𝐴)
76subrgbas 20031 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘𝑆))
87adantr 481 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 = (Base‘𝑆))
95, 8sseqtrrd 3967 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵𝐴)
106oveq1i 7281 . . . . . . 7 (𝑆s 𝐵) = ((𝑅s 𝐴) ↾s 𝐵)
11 ressabs 16957 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → ((𝑅s 𝐴) ↾s 𝐵) = (𝑅s 𝐵))
1210, 11eqtrid 2792 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → (𝑆s 𝐵) = (𝑅s 𝐵))
139, 12syldan 591 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) = (𝑅s 𝐵))
14 eqid 2740 . . . . . . 7 (𝑆s 𝐵) = (𝑆s 𝐵)
1514subrgring 20025 . . . . . 6 (𝐵 ∈ (SubRing‘𝑆) → (𝑆s 𝐵) ∈ Ring)
1615adantl 482 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) ∈ Ring)
1713, 16eqeltrrd 2842 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑅s 𝐵) ∈ Ring)
18 eqid 2740 . . . . . . . 8 (Base‘𝑅) = (Base‘𝑅)
1918subrgss 20023 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
2019adantr 481 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 ⊆ (Base‘𝑅))
219, 20sstrd 3936 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑅))
22 eqid 2740 . . . . . . . 8 (1r𝑅) = (1r𝑅)
236, 22subrg1 20032 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → (1r𝑅) = (1r𝑆))
2423adantr 481 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) = (1r𝑆))
25 eqid 2740 . . . . . . . 8 (1r𝑆) = (1r𝑆)
2625subrg1cl 20030 . . . . . . 7 (𝐵 ∈ (SubRing‘𝑆) → (1r𝑆) ∈ 𝐵)
2726adantl 482 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑆) ∈ 𝐵)
2824, 27eqeltrd 2841 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) ∈ 𝐵)
2921, 28jca 512 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵))
3018, 22issubrg 20022 . . . 4 (𝐵 ∈ (SubRing‘𝑅) ↔ ((𝑅 ∈ Ring ∧ (𝑅s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵)))
312, 17, 29, 30syl21anbrc 1343 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ∈ (SubRing‘𝑅))
3231, 9jca 512 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴))
336subrgring 20025 . . . 4 (𝐴 ∈ (SubRing‘𝑅) → 𝑆 ∈ Ring)
3433adantr 481 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝑆 ∈ Ring)
3512adantrl 713 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) = (𝑅s 𝐵))
36 eqid 2740 . . . . . 6 (𝑅s 𝐵) = (𝑅s 𝐵)
3736subrgring 20025 . . . . 5 (𝐵 ∈ (SubRing‘𝑅) → (𝑅s 𝐵) ∈ Ring)
3837ad2antrl 725 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑅s 𝐵) ∈ Ring)
3935, 38eqeltrd 2841 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) ∈ Ring)
40 simprr 770 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵𝐴)
417adantr 481 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐴 = (Base‘𝑆))
4240, 41sseqtrd 3966 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ⊆ (Base‘𝑆))
4323adantr 481 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) = (1r𝑆))
4422subrg1cl 20030 . . . . . 6 (𝐵 ∈ (SubRing‘𝑅) → (1r𝑅) ∈ 𝐵)
4544ad2antrl 725 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) ∈ 𝐵)
4643, 45eqeltrrd 2842 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑆) ∈ 𝐵)
4742, 46jca 512 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵))
483, 25issubrg 20022 . . 3 (𝐵 ∈ (SubRing‘𝑆) ↔ ((𝑆 ∈ Ring ∧ (𝑆s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵)))
4934, 39, 47, 48syl21anbrc 1343 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ∈ (SubRing‘𝑆))
5032, 49impbida 798 1 (𝐴 ∈ (SubRing‘𝑅) → (𝐵 ∈ (SubRing‘𝑆) ↔ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396   = wceq 1542  wcel 2110  wss 3892  cfv 6432  (class class class)co 7271  Basecbs 16910  s cress 16939  1rcur 19735  Ringcrg 19781  SubRingcsubrg 20018
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 1975  ax-7 2015  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2711  ax-sep 5227  ax-nul 5234  ax-pow 5292  ax-pr 5356  ax-un 7582  ax-cnex 10928  ax-resscn 10929  ax-1cn 10930  ax-icn 10931  ax-addcl 10932  ax-addrcl 10933  ax-mulcl 10934  ax-mulrcl 10935  ax-mulcom 10936  ax-addass 10937  ax-mulass 10938  ax-distr 10939  ax-i2m1 10940  ax-1ne0 10941  ax-1rid 10942  ax-rnegex 10943  ax-rrecex 10944  ax-cnre 10945  ax-pre-lttri 10946  ax-pre-lttrn 10947  ax-pre-ltadd 10948  ax-pre-mulgt0 10949
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2072  df-mo 2542  df-eu 2571  df-clab 2718  df-cleq 2732  df-clel 2818  df-nfc 2891  df-ne 2946  df-nel 3052  df-ral 3071  df-rex 3072  df-reu 3073  df-rmo 3074  df-rab 3075  df-v 3433  df-sbc 3721  df-csb 3838  df-dif 3895  df-un 3897  df-in 3899  df-ss 3909  df-pss 3911  df-nul 4263  df-if 4466  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4846  df-iun 4932  df-br 5080  df-opab 5142  df-mpt 5163  df-tr 5197  df-id 5490  df-eprel 5496  df-po 5504  df-so 5505  df-fr 5545  df-we 5547  df-xp 5596  df-rel 5597  df-cnv 5598  df-co 5599  df-dm 5600  df-rn 5601  df-res 5602  df-ima 5603  df-pred 6201  df-ord 6268  df-on 6269  df-lim 6270  df-suc 6271  df-iota 6390  df-fun 6434  df-fn 6435  df-f 6436  df-f1 6437  df-fo 6438  df-f1o 6439  df-fv 6440  df-riota 7228  df-ov 7274  df-oprab 7275  df-mpo 7276  df-om 7707  df-2nd 7825  df-frecs 8088  df-wrecs 8119  df-recs 8193  df-rdg 8232  df-er 8481  df-en 8717  df-dom 8718  df-sdom 8719  df-pnf 11012  df-mnf 11013  df-xr 11014  df-ltxr 11015  df-le 11016  df-sub 11207  df-neg 11208  df-nn 11974  df-2 12036  df-3 12037  df-sets 16863  df-slot 16881  df-ndx 16893  df-base 16911  df-ress 16940  df-plusg 16973  df-mulr 16974  df-0g 17150  df-mgm 18324  df-sgrp 18373  df-mnd 18384  df-subg 18750  df-mgp 19719  df-ur 19736  df-ring 19783  df-subrg 20020
This theorem is referenced by:  subsubrg2  20049  zringunit  20686  rzgrp  20826  subrgmpl  21231  mplbas2  21241  mplind  21276  fedgmullem1  31706  fedgmullem2  31707  fedgmul  31708  fldexttr  31729
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