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Theorem subsubrg 19537
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 19516 . . . . 5 (𝐴 ∈ (SubRing‘𝑅) → 𝑅 ∈ Ring)
21adantr 484 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝑅 ∈ Ring)
3 eqid 2821 . . . . . . . . 9 (Base‘𝑆) = (Base‘𝑆)
43subrgss 19512 . . . . . . . 8 (𝐵 ∈ (SubRing‘𝑆) → 𝐵 ⊆ (Base‘𝑆))
54adantl 485 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑆))
6 subsubrg.s . . . . . . . . 9 𝑆 = (𝑅s 𝐴)
76subrgbas 19520 . . . . . . . 8 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 = (Base‘𝑆))
87adantr 484 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 = (Base‘𝑆))
95, 8sseqtrrd 3984 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵𝐴)
106oveq1i 7140 . . . . . . 7 (𝑆s 𝐵) = ((𝑅s 𝐴) ↾s 𝐵)
11 ressabs 16542 . . . . . . 7 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → ((𝑅s 𝐴) ↾s 𝐵) = (𝑅s 𝐵))
1210, 11syl5eq 2868 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴) → (𝑆s 𝐵) = (𝑅s 𝐵))
139, 12syldan 594 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) = (𝑅s 𝐵))
14 eqid 2821 . . . . . . 7 (𝑆s 𝐵) = (𝑆s 𝐵)
1514subrgring 19514 . . . . . 6 (𝐵 ∈ (SubRing‘𝑆) → (𝑆s 𝐵) ∈ Ring)
1615adantl 485 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑆s 𝐵) ∈ Ring)
1713, 16eqeltrrd 2913 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝑅s 𝐵) ∈ Ring)
18 eqid 2821 . . . . . . . 8 (Base‘𝑅) = (Base‘𝑅)
1918subrgss 19512 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → 𝐴 ⊆ (Base‘𝑅))
2019adantr 484 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐴 ⊆ (Base‘𝑅))
219, 20sstrd 3953 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ⊆ (Base‘𝑅))
22 eqid 2821 . . . . . . . 8 (1r𝑅) = (1r𝑅)
236, 22subrg1 19521 . . . . . . 7 (𝐴 ∈ (SubRing‘𝑅) → (1r𝑅) = (1r𝑆))
2423adantr 484 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) = (1r𝑆))
25 eqid 2821 . . . . . . . 8 (1r𝑆) = (1r𝑆)
2625subrg1cl 19519 . . . . . . 7 (𝐵 ∈ (SubRing‘𝑆) → (1r𝑆) ∈ 𝐵)
2726adantl 485 . . . . . 6 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑆) ∈ 𝐵)
2824, 27eqeltrd 2912 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (1r𝑅) ∈ 𝐵)
2921, 28jca 515 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵))
3018, 22issubrg 19511 . . . 4 (𝐵 ∈ (SubRing‘𝑅) ↔ ((𝑅 ∈ Ring ∧ (𝑅s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑅) ∧ (1r𝑅) ∈ 𝐵)))
312, 17, 29, 30syl21anbrc 1341 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → 𝐵 ∈ (SubRing‘𝑅))
3231, 9jca 515 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ 𝐵 ∈ (SubRing‘𝑆)) → (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴))
336subrgring 19514 . . . 4 (𝐴 ∈ (SubRing‘𝑅) → 𝑆 ∈ Ring)
3433adantr 484 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝑆 ∈ Ring)
3512adantrl 715 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) = (𝑅s 𝐵))
36 eqid 2821 . . . . . 6 (𝑅s 𝐵) = (𝑅s 𝐵)
3736subrgring 19514 . . . . 5 (𝐵 ∈ (SubRing‘𝑅) → (𝑅s 𝐵) ∈ Ring)
3837ad2antrl 727 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑅s 𝐵) ∈ Ring)
3935, 38eqeltrd 2912 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝑆s 𝐵) ∈ Ring)
40 simprr 772 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵𝐴)
417adantr 484 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐴 = (Base‘𝑆))
4240, 41sseqtrd 3983 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ⊆ (Base‘𝑆))
4323adantr 484 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) = (1r𝑆))
4422subrg1cl 19519 . . . . . 6 (𝐵 ∈ (SubRing‘𝑅) → (1r𝑅) ∈ 𝐵)
4544ad2antrl 727 . . . . 5 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑅) ∈ 𝐵)
4643, 45eqeltrrd 2913 . . . 4 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (1r𝑆) ∈ 𝐵)
4742, 46jca 515 . . 3 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵))
483, 25issubrg 19511 . . 3 (𝐵 ∈ (SubRing‘𝑆) ↔ ((𝑆 ∈ Ring ∧ (𝑆s 𝐵) ∈ Ring) ∧ (𝐵 ⊆ (Base‘𝑆) ∧ (1r𝑆) ∈ 𝐵)))
4934, 39, 47, 48syl21anbrc 1341 . 2 ((𝐴 ∈ (SubRing‘𝑅) ∧ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)) → 𝐵 ∈ (SubRing‘𝑆))
5032, 49impbida 800 1 (𝐴 ∈ (SubRing‘𝑅) → (𝐵 ∈ (SubRing‘𝑆) ↔ (𝐵 ∈ (SubRing‘𝑅) ∧ 𝐵𝐴)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399   = wceq 1538  wcel 2115  wss 3910  cfv 6328  (class class class)co 7130  Basecbs 16462  s cress 16463  1rcur 19230  Ringcrg 19276  SubRingcsubrg 19507
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2178  ax-ext 2793  ax-sep 5176  ax-nul 5183  ax-pow 5239  ax-pr 5303  ax-un 7436  ax-cnex 10570  ax-resscn 10571  ax-1cn 10572  ax-icn 10573  ax-addcl 10574  ax-addrcl 10575  ax-mulcl 10576  ax-mulrcl 10577  ax-mulcom 10578  ax-addass 10579  ax-mulass 10580  ax-distr 10581  ax-i2m1 10582  ax-1ne0 10583  ax-1rid 10584  ax-rnegex 10585  ax-rrecex 10586  ax-cnre 10587  ax-pre-lttri 10588  ax-pre-lttrn 10589  ax-pre-ltadd 10590  ax-pre-mulgt0 10591
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2623  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2892  df-nfc 2960  df-ne 3008  df-nel 3112  df-ral 3131  df-rex 3132  df-reu 3133  df-rmo 3134  df-rab 3135  df-v 3473  df-sbc 3750  df-csb 3858  df-dif 3913  df-un 3915  df-in 3917  df-ss 3927  df-pss 3929  df-nul 4267  df-if 4441  df-pw 4514  df-sn 4541  df-pr 4543  df-tp 4545  df-op 4547  df-uni 4812  df-iun 4894  df-br 5040  df-opab 5102  df-mpt 5120  df-tr 5146  df-id 5433  df-eprel 5438  df-po 5447  df-so 5448  df-fr 5487  df-we 5489  df-xp 5534  df-rel 5535  df-cnv 5536  df-co 5537  df-dm 5538  df-rn 5539  df-res 5540  df-ima 5541  df-pred 6121  df-ord 6167  df-on 6168  df-lim 6169  df-suc 6170  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-riota 7088  df-ov 7133  df-oprab 7134  df-mpo 7135  df-om 7556  df-wrecs 7922  df-recs 7983  df-rdg 8021  df-er 8264  df-en 8485  df-dom 8486  df-sdom 8487  df-pnf 10654  df-mnf 10655  df-xr 10656  df-ltxr 10657  df-le 10658  df-sub 10849  df-neg 10850  df-nn 11616  df-2 11678  df-3 11679  df-ndx 16465  df-slot 16466  df-base 16468  df-sets 16469  df-ress 16470  df-plusg 16557  df-mulr 16558  df-0g 16694  df-mgm 17831  df-sgrp 17880  df-mnd 17891  df-subg 18255  df-mgp 19219  df-ur 19231  df-ring 19278  df-subrg 19509
This theorem is referenced by:  subsubrg2  19538  subrgmpl  20217  mplbas2  20227  mplind  20258  zringunit  20611  rzgrp  20743  fedgmullem1  31036  fedgmullem2  31037  fedgmul  31038  fldexttr  31059
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