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Theorem subsubrg 19965
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 19944 . . . . 5 (𝐴 ∈ (SubRing‘𝑅) → 𝑅 ∈ Ring)
21adantr 480 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝑅 ∈ Ring)
3 eqid 2738 . . . . . . . . 9 (Base‘𝑆) = (Base‘𝑆)
43subrgss 19940 . . . . . . . 8 (𝐵 ∈ (SubRing‘𝑆) → 𝐵 ⊆ (Base‘𝑆))
54adantl 481 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑆))
6 subsubrg.s . . . . . . . . 9 𝑆 = (𝑅s 𝐴)
76subrgbas 19948 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘𝑆))
87adantr 480 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 = (Base‘𝑆))
95, 8sseqtrrd 3958 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵𝐴)
106oveq1i 7265 . . . . . . 7 (𝑆s 𝐵) = ((𝑅s 𝐴) ↾s 𝐵)
11 ressabs 16885 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → ((𝑅s 𝐴) ↾s 𝐵) = (𝑅s 𝐵))
1210, 11eqtrid 2790 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → (𝑆s 𝐵) = (𝑅s 𝐵))
139, 12syldan 590 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) = (𝑅s 𝐵))
14 eqid 2738 . . . . . . 7 (𝑆s 𝐵) = (𝑆s 𝐵)
1514subrgring 19942 . . . . . 6 (𝐵 ∈ (SubRing‘𝑆) → (𝑆s 𝐵) ∈ Ring)
1615adantl 481 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) ∈ Ring)
1713, 16eqeltrrd 2840 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑅s 𝐵) ∈ Ring)
18 eqid 2738 . . . . . . . 8 (Base‘𝑅) = (Base‘𝑅)
1918subrgss 19940 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
2019adantr 480 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 ⊆ (Base‘𝑅))
219, 20sstrd 3927 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑅))
22 eqid 2738 . . . . . . . 8 (1r𝑅) = (1r𝑅)
236, 22subrg1 19949 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → (1r𝑅) = (1r𝑆))
2423adantr 480 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) = (1r𝑆))
25 eqid 2738 . . . . . . . 8 (1r𝑆) = (1r𝑆)
2625subrg1cl 19947 . . . . . . 7 (𝐵 ∈ (SubRing‘𝑆) → (1r𝑆) ∈ 𝐵)
2726adantl 481 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑆) ∈ 𝐵)
2824, 27eqeltrd 2839 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) ∈ 𝐵)
2921, 28jca 511 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵))
3018, 22issubrg 19939 . . . 4 (𝐵 ∈ (SubRing‘𝑅) ↔ ((𝑅 ∈ Ring ∧ (𝑅s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵)))
312, 17, 29, 30syl21anbrc 1342 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ∈ (SubRing‘𝑅))
3231, 9jca 511 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴))
336subrgring 19942 . . . 4 (𝐴 ∈ (SubRing‘𝑅) → 𝑆 ∈ Ring)
3433adantr 480 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝑆 ∈ Ring)
3512adantrl 712 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) = (𝑅s 𝐵))
36 eqid 2738 . . . . . 6 (𝑅s 𝐵) = (𝑅s 𝐵)
3736subrgring 19942 . . . . 5 (𝐵 ∈ (SubRing‘𝑅) → (𝑅s 𝐵) ∈ Ring)
3837ad2antrl 724 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑅s 𝐵) ∈ Ring)
3935, 38eqeltrd 2839 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) ∈ Ring)
40 simprr 769 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵𝐴)
417adantr 480 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐴 = (Base‘𝑆))
4240, 41sseqtrd 3957 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ⊆ (Base‘𝑆))
4323adantr 480 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) = (1r𝑆))
4422subrg1cl 19947 . . . . . 6 (𝐵 ∈ (SubRing‘𝑅) → (1r𝑅) ∈ 𝐵)
4544ad2antrl 724 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) ∈ 𝐵)
4643, 45eqeltrrd 2840 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑆) ∈ 𝐵)
4742, 46jca 511 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵))
483, 25issubrg 19939 . . 3 (𝐵 ∈ (SubRing‘𝑆) ↔ ((𝑆 ∈ Ring ∧ (𝑆s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵)))
4934, 39, 47, 48syl21anbrc 1342 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ∈ (SubRing‘𝑆))
5032, 49impbida 797 1 (𝐴 ∈ (SubRing‘𝑅) → (𝐵 ∈ (SubRing‘𝑆) ↔ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 395   = wceq 1539  wcel 2108  wss 3883  cfv 6418  (class class class)co 7255  Basecbs 16840  s cress 16867  1rcur 19652  Ringcrg 19698  SubRingcsubrg 19935
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-en 8692  df-dom 8693  df-sdom 8694  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-2 11966  df-3 11967  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-ress 16868  df-plusg 16901  df-mulr 16902  df-0g 17069  df-mgm 18241  df-sgrp 18290  df-mnd 18301  df-subg 18667  df-mgp 19636  df-ur 19653  df-ring 19700  df-subrg 19937
This theorem is referenced by:  subsubrg2  19966  zringunit  20600  rzgrp  20740  subrgmpl  21143  mplbas2  21153  mplind  21188  fedgmullem1  31612  fedgmullem2  31613  fedgmul  31614  fldexttr  31635
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