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Theorem issubassa2 19705
Description: A subring of a unital algebra is a subspace and thus a subalgebra iff it contains all scalar multiples of the identity. (Contributed by Mario Carneiro, 9-Mar-2015.)
Hypotheses
Ref Expression
issubassa2.a 𝐴 = (algSc‘𝑊)
issubassa2.l 𝐿 = (LSubSp‘𝑊)
Assertion
Ref Expression
issubassa2 ((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) → (𝑆𝐿 ↔ ran 𝐴𝑆))

Proof of Theorem issubassa2
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 issubassa2.a . . . . 5 𝐴 = (algSc‘𝑊)
2 eqid 2824 . . . . 5 (1r𝑊) = (1r𝑊)
3 eqid 2824 . . . . 5 (LSpan‘𝑊) = (LSpan‘𝑊)
41, 2, 3rnascl 19703 . . . 4 (𝑊 ∈ AssAlg → ran 𝐴 = ((LSpan‘𝑊)‘{(1r𝑊)}))
54ad2antrr 719 . . 3 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → ran 𝐴 = ((LSpan‘𝑊)‘{(1r𝑊)}))
6 issubassa2.l . . . 4 𝐿 = (LSubSp‘𝑊)
7 assalmod 19679 . . . . 5 (𝑊 ∈ AssAlg → 𝑊 ∈ LMod)
87ad2antrr 719 . . . 4 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → 𝑊 ∈ LMod)
9 simpr 479 . . . 4 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → 𝑆𝐿)
102subrg1cl 19143 . . . . 5 (𝑆 ∈ (SubRing‘𝑊) → (1r𝑊) ∈ 𝑆)
1110ad2antlr 720 . . . 4 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → (1r𝑊) ∈ 𝑆)
126, 3, 8, 9, 11lspsnel5a 19354 . . 3 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → ((LSpan‘𝑊)‘{(1r𝑊)}) ⊆ 𝑆)
135, 12eqsstrd 3863 . 2 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ 𝑆𝐿) → ran 𝐴𝑆)
14 subrgsubg 19141 . . . 4 (𝑆 ∈ (SubRing‘𝑊) → 𝑆 ∈ (SubGrp‘𝑊))
1514ad2antlr 720 . . 3 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → 𝑆 ∈ (SubGrp‘𝑊))
16 simplll 793 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → 𝑊 ∈ AssAlg)
17 simprl 789 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → 𝑥 ∈ (Base‘(Scalar‘𝑊)))
18 eqid 2824 . . . . . . . . . 10 (Base‘𝑊) = (Base‘𝑊)
1918subrgss 19136 . . . . . . . . 9 (𝑆 ∈ (SubRing‘𝑊) → 𝑆 ⊆ (Base‘𝑊))
2019ad2antlr 720 . . . . . . . 8 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → 𝑆 ⊆ (Base‘𝑊))
2120sselda 3826 . . . . . . 7 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ 𝑦𝑆) → 𝑦 ∈ (Base‘𝑊))
2221adantrl 709 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → 𝑦 ∈ (Base‘𝑊))
23 eqid 2824 . . . . . . 7 (Scalar‘𝑊) = (Scalar‘𝑊)
24 eqid 2824 . . . . . . 7 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
25 eqid 2824 . . . . . . 7 (.r𝑊) = (.r𝑊)
26 eqid 2824 . . . . . . 7 ( ·𝑠𝑊) = ( ·𝑠𝑊)
271, 23, 24, 18, 25, 26asclmul1 19699 . . . . . 6 ((𝑊 ∈ AssAlg ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦 ∈ (Base‘𝑊)) → ((𝐴𝑥)(.r𝑊)𝑦) = (𝑥( ·𝑠𝑊)𝑦))
2816, 17, 22, 27syl3anc 1496 . . . . 5 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → ((𝐴𝑥)(.r𝑊)𝑦) = (𝑥( ·𝑠𝑊)𝑦))
29 simpllr 795 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → 𝑆 ∈ (SubRing‘𝑊))
30 simplr 787 . . . . . . . 8 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊))) → ran 𝐴𝑆)
311, 23, 24asclfn 19696 . . . . . . . . . 10 𝐴 Fn (Base‘(Scalar‘𝑊))
3231a1i 11 . . . . . . . . 9 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → 𝐴 Fn (Base‘(Scalar‘𝑊)))
33 fnfvelrn 6604 . . . . . . . . 9 ((𝐴 Fn (Base‘(Scalar‘𝑊)) ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊))) → (𝐴𝑥) ∈ ran 𝐴)
3432, 33sylan 577 . . . . . . . 8 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊))) → (𝐴𝑥) ∈ ran 𝐴)
3530, 34sseldd 3827 . . . . . . 7 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊))) → (𝐴𝑥) ∈ 𝑆)
3635adantrr 710 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → (𝐴𝑥) ∈ 𝑆)
37 simprr 791 . . . . . 6 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → 𝑦𝑆)
3825subrgmcl 19147 . . . . . 6 ((𝑆 ∈ (SubRing‘𝑊) ∧ (𝐴𝑥) ∈ 𝑆𝑦𝑆) → ((𝐴𝑥)(.r𝑊)𝑦) ∈ 𝑆)
3929, 36, 37, 38syl3anc 1496 . . . . 5 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → ((𝐴𝑥)(.r𝑊)𝑦) ∈ 𝑆)
4028, 39eqeltrrd 2906 . . . 4 ((((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑦𝑆)) → (𝑥( ·𝑠𝑊)𝑦) ∈ 𝑆)
4140ralrimivva 3179 . . 3 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → ∀𝑥 ∈ (Base‘(Scalar‘𝑊))∀𝑦𝑆 (𝑥( ·𝑠𝑊)𝑦) ∈ 𝑆)
4223, 24, 18, 26, 6islss4 19320 . . . . 5 (𝑊 ∈ LMod → (𝑆𝐿 ↔ (𝑆 ∈ (SubGrp‘𝑊) ∧ ∀𝑥 ∈ (Base‘(Scalar‘𝑊))∀𝑦𝑆 (𝑥( ·𝑠𝑊)𝑦) ∈ 𝑆)))
437, 42syl 17 . . . 4 (𝑊 ∈ AssAlg → (𝑆𝐿 ↔ (𝑆 ∈ (SubGrp‘𝑊) ∧ ∀𝑥 ∈ (Base‘(Scalar‘𝑊))∀𝑦𝑆 (𝑥( ·𝑠𝑊)𝑦) ∈ 𝑆)))
4443ad2antrr 719 . . 3 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → (𝑆𝐿 ↔ (𝑆 ∈ (SubGrp‘𝑊) ∧ ∀𝑥 ∈ (Base‘(Scalar‘𝑊))∀𝑦𝑆 (𝑥( ·𝑠𝑊)𝑦) ∈ 𝑆)))
4515, 41, 44mpbir2and 706 . 2 (((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) ∧ ran 𝐴𝑆) → 𝑆𝐿)
4613, 45impbida 837 1 ((𝑊 ∈ AssAlg ∧ 𝑆 ∈ (SubRing‘𝑊)) → (𝑆𝐿 ↔ ran 𝐴𝑆))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 198  wa 386   = wceq 1658  wcel 2166  wral 3116  wss 3797  {csn 4396  ran crn 5342   Fn wfn 6117  cfv 6122  (class class class)co 6904  Basecbs 16221  .rcmulr 16305  Scalarcsca 16307   ·𝑠 cvsca 16308  SubGrpcsubg 17938  1rcur 18854  SubRingcsubrg 19131  LModclmod 19218  LSubSpclss 19287  LSpanclspn 19329  AssAlgcasa 19669  algSccascl 19671
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1896  ax-4 1910  ax-5 2011  ax-6 2077  ax-7 2114  ax-8 2168  ax-9 2175  ax-10 2194  ax-11 2209  ax-12 2222  ax-13 2390  ax-ext 2802  ax-rep 4993  ax-sep 5004  ax-nul 5012  ax-pow 5064  ax-pr 5126  ax-un 7208  ax-cnex 10307  ax-resscn 10308  ax-1cn 10309  ax-icn 10310  ax-addcl 10311  ax-addrcl 10312  ax-mulcl 10313  ax-mulrcl 10314  ax-mulcom 10315  ax-addass 10316  ax-mulass 10317  ax-distr 10318  ax-i2m1 10319  ax-1ne0 10320  ax-1rid 10321  ax-rnegex 10322  ax-rrecex 10323  ax-cnre 10324  ax-pre-lttri 10325  ax-pre-lttrn 10326  ax-pre-ltadd 10327  ax-pre-mulgt0 10328
This theorem depends on definitions:  df-bi 199  df-an 387  df-or 881  df-3or 1114  df-3an 1115  df-tru 1662  df-ex 1881  df-nf 1885  df-sb 2070  df-mo 2604  df-eu 2639  df-clab 2811  df-cleq 2817  df-clel 2820  df-nfc 2957  df-ne 2999  df-nel 3102  df-ral 3121  df-rex 3122  df-reu 3123  df-rmo 3124  df-rab 3125  df-v 3415  df-sbc 3662  df-csb 3757  df-dif 3800  df-un 3802  df-in 3804  df-ss 3811  df-pss 3813  df-nul 4144  df-if 4306  df-pw 4379  df-sn 4397  df-pr 4399  df-tp 4401  df-op 4403  df-uni 4658  df-int 4697  df-iun 4741  df-br 4873  df-opab 4935  df-mpt 4952  df-tr 4975  df-id 5249  df-eprel 5254  df-po 5262  df-so 5263  df-fr 5300  df-we 5302  df-xp 5347  df-rel 5348  df-cnv 5349  df-co 5350  df-dm 5351  df-rn 5352  df-res 5353  df-ima 5354  df-pred 5919  df-ord 5965  df-on 5966  df-lim 5967  df-suc 5968  df-iota 6085  df-fun 6124  df-fn 6125  df-f 6126  df-f1 6127  df-fo 6128  df-f1o 6129  df-fv 6130  df-riota 6865  df-ov 6907  df-oprab 6908  df-mpt2 6909  df-om 7326  df-1st 7427  df-2nd 7428  df-wrecs 7671  df-recs 7733  df-rdg 7771  df-er 8008  df-en 8222  df-dom 8223  df-sdom 8224  df-pnf 10392  df-mnf 10393  df-xr 10394  df-ltxr 10395  df-le 10396  df-sub 10586  df-neg 10587  df-nn 11350  df-2 11413  df-3 11414  df-ndx 16224  df-slot 16225  df-base 16227  df-sets 16228  df-ress 16229  df-plusg 16317  df-mulr 16318  df-0g 16454  df-mgm 17594  df-sgrp 17636  df-mnd 17647  df-grp 17778  df-minusg 17779  df-sbg 17780  df-subg 17941  df-mgp 18843  df-ur 18855  df-ring 18902  df-subrg 19133  df-lmod 19220  df-lss 19288  df-lsp 19330  df-assa 19672  df-ascl 19674
This theorem is referenced by:  aspval2  19707
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