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Theorem srgcl 13973
Description: Closure of the multiplication operation of a semiring. (Contributed by NM, 26-Aug-2011.) (Revised by Mario Carneiro, 6-Jan-2015.) (Revised by Thierry Arnoux, 1-Apr-2018.)
Hypotheses
Ref Expression
srgcl.b  |-  B  =  ( Base `  R
)
srgcl.t  |-  .x.  =  ( .r `  R )
Assertion
Ref Expression
srgcl  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .x.  Y )  e.  B )

Proof of Theorem srgcl
StepHypRef Expression
1 eqid 2229 . . . . 5  |-  (mulGrp `  R )  =  (mulGrp `  R )
21srgmgp 13971 . . . 4  |-  ( R  e. SRing  ->  (mulGrp `  R )  e.  Mnd )
323ad2ant1 1042 . . 3  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  (mulGrp `  R )  e.  Mnd )
4 simp2 1022 . . . 4  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  X  e.  B )
5 srgcl.b . . . . . 6  |-  B  =  ( Base `  R
)
61, 5mgpbasg 13929 . . . . 5  |-  ( R  e. SRing  ->  B  =  (
Base `  (mulGrp `  R
) ) )
763ad2ant1 1042 . . . 4  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  B  =  ( Base `  (mulGrp `  R ) ) )
84, 7eleqtrd 2308 . . 3  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  X  e.  ( Base `  (mulGrp `  R ) ) )
9 simp3 1023 . . . 4  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  Y  e.  B )
109, 7eleqtrd 2308 . . 3  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  Y  e.  ( Base `  (mulGrp `  R ) ) )
11 eqid 2229 . . . 4  |-  ( Base `  (mulGrp `  R )
)  =  ( Base `  (mulGrp `  R )
)
12 eqid 2229 . . . 4  |-  ( +g  `  (mulGrp `  R )
)  =  ( +g  `  (mulGrp `  R )
)
1311, 12mndcl 13496 . . 3  |-  ( ( (mulGrp `  R )  e.  Mnd  /\  X  e.  ( Base `  (mulGrp `  R ) )  /\  Y  e.  ( Base `  (mulGrp `  R )
) )  ->  ( X ( +g  `  (mulGrp `  R ) ) Y )  e.  ( Base `  (mulGrp `  R )
) )
143, 8, 10, 13syl3anc 1271 . 2  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  ( X ( +g  `  (mulGrp `  R ) ) Y )  e.  ( Base `  (mulGrp `  R )
) )
15 srgcl.t . . . . 5  |-  .x.  =  ( .r `  R )
161, 15mgpplusgg 13927 . . . 4  |-  ( R  e. SRing  ->  .x.  =  ( +g  `  (mulGrp `  R
) ) )
17163ad2ant1 1042 . . 3  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  .x.  =  ( +g  `  (mulGrp `  R ) ) )
1817oveqd 6030 . 2  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .x.  Y )  =  ( X ( +g  `  (mulGrp `  R )
) Y ) )
1914, 18, 73eltr4d 2313 1  |-  ( ( R  e. SRing  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .x.  Y )  e.  B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 1002    = wceq 1395    e. wcel 2200   ` cfv 5324  (class class class)co 6013   Basecbs 13072   +g cplusg 13150   .rcmulr 13151   Mndcmnd 13489  mulGrpcmgp 13923  SRingcsrg 13966
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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-cnex 8113  ax-resscn 8114  ax-1cn 8115  ax-1re 8116  ax-icn 8117  ax-addcl 8118  ax-addrcl 8119  ax-mulcl 8120  ax-addcom 8122  ax-addass 8124  ax-i2m1 8127  ax-0lt1 8128  ax-0id 8130  ax-rnegex 8131  ax-pre-ltirr 8134  ax-pre-ltadd 8138
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-nul 3493  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-br 4087  df-opab 4149  df-mpt 4150  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-iota 5284  df-fun 5326  df-fn 5327  df-fv 5332  df-riota 5966  df-ov 6016  df-oprab 6017  df-mpo 6018  df-pnf 8206  df-mnf 8207  df-ltxr 8209  df-inn 9134  df-2 9192  df-3 9193  df-ndx 13075  df-slot 13076  df-base 13078  df-sets 13079  df-plusg 13163  df-mulr 13164  df-0g 13331  df-mgm 13429  df-sgrp 13475  df-mnd 13490  df-mgp 13924  df-srg 13967
This theorem is referenced by:  srgfcl  13976  srgmulgass  13992  srgpcomppsc  13995  srglmhm  13996  srgrmhm  13997  dvdsrvald  14097  dvdsrd  14098  dvdsrex  14102
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