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Theorem issubrg3 14555
Description: A subring is an additive subgroup which is also a multiplicative submonoid. (Contributed by Mario Carneiro, 7-Mar-2015.)
Hypothesis
Ref Expression
issubrg3.m  |-  M  =  (mulGrp `  R )
Assertion
Ref Expression
issubrg3  |-  ( R  e.  Ring  ->  ( S  e.  (SubRing `  R
)  <->  ( S  e.  (SubGrp `  R )  /\  S  e.  (SubMnd `  M ) ) ) )

Proof of Theorem issubrg3
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2238 . . . 4  |-  ( Base `  R )  =  (
Base `  R )
2 eqid 2238 . . . 4  |-  ( 1r
`  R )  =  ( 1r `  R
)
3 eqid 2238 . . . 4  |-  ( .r
`  R )  =  ( .r `  R
)
41, 2, 3issubrg2 14549 . . 3  |-  ( R  e.  Ring  ->  ( S  e.  (SubRing `  R
)  <->  ( S  e.  (SubGrp `  R )  /\  ( 1r `  R
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x ( .r `  R ) y )  e.  S ) ) )
5 3anass 1013 . . 3  |-  ( ( S  e.  (SubGrp `  R )  /\  ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x
( .r `  R
) y )  e.  S )  <->  ( S  e.  (SubGrp `  R )  /\  ( ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x ( .r
`  R ) y )  e.  S ) ) )
64, 5bitrdi 196 . 2  |-  ( R  e.  Ring  ->  ( S  e.  (SubRing `  R
)  <->  ( S  e.  (SubGrp `  R )  /\  ( ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x ( .r
`  R ) y )  e.  S ) ) ) )
71subgss 13977 . . . 4  |-  ( S  e.  (SubGrp `  R
)  ->  S  C_  ( Base `  R ) )
8 issubrg3.m . . . . . . . . 9  |-  M  =  (mulGrp `  R )
98ringmgp 14306 . . . . . . . 8  |-  ( R  e.  Ring  ->  M  e. 
Mnd )
10 eqid 2238 . . . . . . . . 9  |-  ( Base `  M )  =  (
Base `  M )
11 eqid 2238 . . . . . . . . 9  |-  ( 0g
`  M )  =  ( 0g `  M
)
12 eqid 2238 . . . . . . . . 9  |-  ( +g  `  M )  =  ( +g  `  M )
1310, 11, 12issubm 13779 . . . . . . . 8  |-  ( M  e.  Mnd  ->  ( S  e.  (SubMnd `  M
)  <->  ( S  C_  ( Base `  M )  /\  ( 0g `  M
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x ( +g  `  M
) y )  e.  S ) ) )
149, 13syl 14 . . . . . . 7  |-  ( R  e.  Ring  ->  ( S  e.  (SubMnd `  M
)  <->  ( S  C_  ( Base `  M )  /\  ( 0g `  M
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x ( +g  `  M
) y )  e.  S ) ) )
158, 1mgpbasg 14224 . . . . . . . . 9  |-  ( R  e.  Ring  ->  ( Base `  R )  =  (
Base `  M )
)
1615sseq2d 3278 . . . . . . . 8  |-  ( R  e.  Ring  ->  ( S 
C_  ( Base `  R
)  <->  S  C_  ( Base `  M ) ) )
178, 2ringidvalg 14264 . . . . . . . . 9  |-  ( R  e.  Ring  ->  ( 1r
`  R )  =  ( 0g `  M
) )
1817eleq1d 2307 . . . . . . . 8  |-  ( R  e.  Ring  ->  ( ( 1r `  R )  e.  S  <->  ( 0g `  M )  e.  S
) )
198, 3mgpplusgg 14221 . . . . . . . . . . 11  |-  ( R  e.  Ring  ->  ( .r
`  R )  =  ( +g  `  M
) )
2019oveqd 6102 . . . . . . . . . 10  |-  ( R  e.  Ring  ->  ( x ( .r `  R
) y )  =  ( x ( +g  `  M ) y ) )
2120eleq1d 2307 . . . . . . . . 9  |-  ( R  e.  Ring  ->  ( ( x ( .r `  R ) y )  e.  S  <->  ( x
( +g  `  M ) y )  e.  S
) )
22212ralbidv 2574 . . . . . . . 8  |-  ( R  e.  Ring  ->  ( A. x  e.  S  A. y  e.  S  (
x ( .r `  R ) y )  e.  S  <->  A. x  e.  S  A. y  e.  S  ( x
( +g  `  M ) y )  e.  S
) )
2316, 18, 223anbi123d 1353 . . . . . . 7  |-  ( R  e.  Ring  ->  ( ( S  C_  ( Base `  R )  /\  ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x
( .r `  R
) y )  e.  S )  <->  ( S  C_  ( Base `  M
)  /\  ( 0g `  M )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x ( +g  `  M ) y )  e.  S ) ) )
2414, 23bitr4d 191 . . . . . 6  |-  ( R  e.  Ring  ->  ( S  e.  (SubMnd `  M
)  <->  ( S  C_  ( Base `  R )  /\  ( 1r `  R
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x ( .r `  R ) y )  e.  S ) ) )
25 3anass 1013 . . . . . 6  |-  ( ( S  C_  ( Base `  R )  /\  ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x
( .r `  R
) y )  e.  S )  <->  ( S  C_  ( Base `  R
)  /\  ( ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x
( .r `  R
) y )  e.  S ) ) )
2624, 25bitrdi 196 . . . . 5  |-  ( R  e.  Ring  ->  ( S  e.  (SubMnd `  M
)  <->  ( S  C_  ( Base `  R )  /\  ( ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x ( .r
`  R ) y )  e.  S ) ) ) )
2726baibd 935 . . . 4  |-  ( ( R  e.  Ring  /\  S  C_  ( Base `  R
) )  ->  ( S  e.  (SubMnd `  M
)  <->  ( ( 1r
`  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x
( .r `  R
) y )  e.  S ) ) )
287, 27sylan2 286 . . 3  |-  ( ( R  e.  Ring  /\  S  e.  (SubGrp `  R )
)  ->  ( S  e.  (SubMnd `  M )  <->  ( ( 1r `  R
)  e.  S  /\  A. x  e.  S  A. y  e.  S  (
x ( .r `  R ) y )  e.  S ) ) )
2928pm5.32da 456 . 2  |-  ( R  e.  Ring  ->  ( ( S  e.  (SubGrp `  R )  /\  S  e.  (SubMnd `  M )
)  <->  ( S  e.  (SubGrp `  R )  /\  ( ( 1r `  R )  e.  S  /\  A. x  e.  S  A. y  e.  S  ( x ( .r
`  R ) y )  e.  S ) ) ) )
306, 29bitr4d 191 1  |-  ( R  e.  Ring  ->  ( S  e.  (SubRing `  R
)  <->  ( S  e.  (SubGrp `  R )  /\  S  e.  (SubMnd `  M ) ) ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 1009    = wceq 1402    e. wcel 2209   A.wral 2528    C_ wss 3220   ` cfv 5377  (class class class)co 6085   Basecbs 13352   +g cplusg 13431   .rcmulr 13432   0gc0g 13610   Mndcmnd 13729  SubMndcsubmnd 13765  SubGrpcsubg 13970  mulGrpcmgp 14217   1rcur 14262   Ringcrg 14300  SubRingcsubrg 14525
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-cnex 8270  ax-resscn 8271  ax-1cn 8272  ax-1re 8273  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-addcom 8279  ax-addass 8281  ax-i2m1 8284  ax-0lt1 8285  ax-0id 8287  ax-rnegex 8288  ax-pre-ltirr 8291  ax-pre-lttrn 8293  ax-pre-ltadd 8295
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rmo 2536  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-fv 5385  df-riota 6038  df-ov 6088  df-oprab 6089  df-mpo 6090  df-pnf 8362  df-mnf 8363  df-ltxr 8365  df-inn 9305  df-2 9363  df-3 9364  df-ndx 13355  df-slot 13356  df-base 13358  df-sets 13359  df-iress 13360  df-plusg 13444  df-mulr 13445  df-0g 13612  df-mgm 13676  df-sgrp 13717  df-mnd 13730  df-submnd 13767  df-subg 13973  df-mgp 14218  df-ur 14263  df-ring 14302  df-subrg 14527
This theorem is used by:  rhmeql  14558  rhmima  14559
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