Theorem issubrg3 13373

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.

Step	Hyp	Ref	Expression
1		eqid 2177	. . . 4 |- ( Base ` R ) = ( Base ` R )
2		eqid 2177	. . . 4 |- ( 1r ` R ) = ( 1r ` R )
3		eqid 2177	. . . 4 |- ( .r ` R ) = ( .r ` R )
4	1, 2, 3	issubrg2 13367	. . 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 982	. . 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 ) ) )
6	4, 5	bitrdi 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 ) ) ) )
7	1	subgss 13039	. . . 4 |- ( S e. (SubGrp ` R ) -> S C_ ( Base ` R ) )
8		issubrg3.m	. . . . . . . . 9 |- M = (mulGrp ` R )
9	8	ringmgp 13190	. . . . . . . 8 |- ( R e. Ring -> M e. Mnd )
10		eqid 2177	. . . . . . . . 9 |- ( Base ` M ) = ( Base ` M )
11		eqid 2177	. . . . . . . . 9 |- ( 0g ` M ) = ( 0g ` M )
12		eqid 2177	. . . . . . . . 9 |- ( +g ` M ) = ( +g ` M )
13	10, 11, 12	issubm 12868	. . . . . . . 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 ) ) )
14	9, 13	syl 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 ) ) )
15	8, 1	mgpbasg 13141	. . . . . . . . 9 |- ( R e. Ring -> ( Base ` R ) = ( Base ` M ) )
16	15	sseq2d 3187	. . . . . . . 8 |- ( R e. Ring -> ( S C_ ( Base ` R ) <-> S C_ ( Base ` M ) ) )
17	8, 2	ringidvalg 13149	. . . . . . . . 9 |- ( R e. Ring -> ( 1r ` R ) = ( 0g ` M ) )
18	17	eleq1d 2246	. . . . . . . 8 |- ( R e. Ring -> ( ( 1r ` R ) e. S <-> ( 0g ` M ) e. S ) )
19	8, 3	mgpplusgg 13139	. . . . . . . . . . 11 |- ( R e. Ring -> ( .r ` R ) = ( +g ` M ) )
20	19	oveqd 5894	. . . . . . . . . 10 |- ( R e. Ring -> ( x ( .r ` R ) y ) = ( x ( +g ` M ) y ) )
21	20	eleq1d 2246	. . . . . . . . 9 |- ( R e. Ring -> ( ( x ( .r ` R ) y ) e. S <-> ( x ( +g ` M ) y ) e. S ) )
22	21	2ralbidv 2501	. . . . . . . 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 ) )
23	16, 18, 22	3anbi123d 1312	. . . . . . 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 ) ) )
24	14, 23	bitr4d 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 982	. . . . . 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 ) ) )
26	24, 25	bitrdi 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 ) ) ) )
27	26	baibd 923	. . . 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 ) ) )
28	7, 27	sylan2 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 ) ) )
29	28	pm5.32da 452	. 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 ) ) ) )
30	6, 29	bitr4d 191	1 |- ( R e. Ring -> ( S e. (SubRing ` R ) <-> ( S e. (SubGrp ` R ) /\ S e. (SubMnd ` M ) ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 978   = wceq 1353   e. wcel 2148   A.wral 2455   C_ wss 3131   ` cfv 5218  (class class class)co 5877   Basecbs 12464   +g cplusg 12538   .rcmulr 12539   0gc0g 12710   Mndcmnd 12822  SubMndcsubmnd 12855  SubGrpcsubg 13032  mulGrpcmgp 13135   1rcur 13147   Ringcrg 13184  SubRingcsubrg 13343

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4123  ax-pow 4176  ax-pr 4211  ax-un 4435  ax-setind 4538  ax-cnex 7904  ax-resscn 7905  ax-1cn 7906  ax-1re 7907  ax-icn 7908  ax-addcl 7909  ax-addrcl 7910  ax-mulcl 7911  ax-addcom 7913  ax-addass 7915  ax-i2m1 7918  ax-0lt1 7919  ax-0id 7921  ax-rnegex 7922  ax-pre-ltirr 7925  ax-pre-lttrn 7927  ax-pre-ltadd 7929

This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-fal 1359  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ne 2348  df-nel 2443  df-ral 2460  df-rex 2461  df-reu 2462  df-rmo 2463  df-rab 2464  df-v 2741  df-sbc 2965  df-csb 3060  df-dif 3133  df-un 3135  df-in 3137  df-ss 3144  df-nul 3425  df-pw 3579  df-sn 3600  df-pr 3601  df-op 3603  df-uni 3812  df-int 3847  df-br 4006  df-opab 4067  df-mpt 4068  df-id 4295  df-xp 4634  df-rel 4635  df-cnv 4636  df-co 4637  df-dm 4638  df-rn 4639  df-res 4640  df-ima 4641  df-iota 5180  df-fun 5220  df-fn 5221  df-fv 5226  df-riota 5833  df-ov 5880  df-oprab 5881  df-mpo 5882  df-pnf 7996  df-mnf 7997  df-ltxr 7999  df-inn 8922  df-2 8980  df-3 8981  df-ndx 12467  df-slot 12468  df-base 12470  df-sets 12471  df-iress 12472  df-plusg 12551  df-mulr 12552  df-0g 12712  df-mgm 12780  df-sgrp 12813  df-mnd 12823  df-submnd 12857  df-subg 13035  df-mgp 13136  df-ur 13148  df-ring 13186  df-subrg 13345

This theorem is referenced by: (None)