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Theorem rngrz 15378
Description: The zero of a unital ring is a right absorbing element. (Contributed by FL, 31-Aug-2009.)
Hypotheses
Ref Expression
rngz.b  |-  B  =  ( Base `  R
)
rngz.t  |-  .x.  =  ( .r `  R )
rngz.z  |-  .0.  =  ( 0g `  R )
Assertion
Ref Expression
rngrz  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  .0.  )  =  .0.  )

Proof of Theorem rngrz
StepHypRef Expression
1 rnggrp 15346 . . . . . 6  |-  ( R  e.  Ring  ->  R  e. 
Grp )
2 rngz.b . . . . . . . 8  |-  B  =  ( Base `  R
)
3 rngz.z . . . . . . . 8  |-  .0.  =  ( 0g `  R )
42, 3grpidcl 14510 . . . . . . 7  |-  ( R  e.  Grp  ->  .0.  e.  B )
5 eqid 2283 . . . . . . . 8  |-  ( +g  `  R )  =  ( +g  `  R )
62, 5, 3grplid 14512 . . . . . . 7  |-  ( ( R  e.  Grp  /\  .0.  e.  B )  -> 
(  .0.  ( +g  `  R )  .0.  )  =  .0.  )
74, 6mpdan 649 . . . . . 6  |-  ( R  e.  Grp  ->  (  .0.  ( +g  `  R
)  .0.  )  =  .0.  )
81, 7syl 15 . . . . 5  |-  ( R  e.  Ring  ->  (  .0.  ( +g  `  R
)  .0.  )  =  .0.  )
98adantr 451 . . . 4  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  (  .0.  ( +g  `  R
)  .0.  )  =  .0.  )
109oveq2d 5874 . . 3  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  (  .0.  ( +g  `  R )  .0.  ) )  =  ( X  .x.  .0.  )
)
11 simpr 447 . . . . 5  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  X  e.  B )
121, 4syl 15 . . . . . 6  |-  ( R  e.  Ring  ->  .0.  e.  B )
1312adantr 451 . . . . 5  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  .0.  e.  B )
1411, 13, 133jca 1132 . . . 4  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  e.  B  /\  .0.  e.  B  /\  .0.  e.  B ) )
15 rngz.t . . . . 5  |-  .x.  =  ( .r `  R )
162, 5, 15rngdi 15359 . . . 4  |-  ( ( R  e.  Ring  /\  ( X  e.  B  /\  .0.  e.  B  /\  .0.  e.  B ) )  -> 
( X  .x.  (  .0.  ( +g  `  R
)  .0.  ) )  =  ( ( X 
.x.  .0.  ) ( +g  `  R ) ( X  .x.  .0.  )
) )
1714, 16syldan 456 . . 3  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  (  .0.  ( +g  `  R )  .0.  ) )  =  ( ( X  .x.  .0.  ) ( +g  `  R
) ( X  .x.  .0.  ) ) )
181adantr 451 . . . 4  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  R  e.  Grp )
192, 15rngcl 15354 . . . . 5  |-  ( ( R  e.  Ring  /\  X  e.  B  /\  .0.  e.  B )  ->  ( X  .x.  .0.  )  e.  B )
2013, 19mpd3an3 1278 . . . 4  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  .0.  )  e.  B )
212, 5, 3grplid 14512 . . . . 5  |-  ( ( R  e.  Grp  /\  ( X  .x.  .0.  )  e.  B )  ->  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) )  =  ( X  .x.  .0.  )
)
2221eqcomd 2288 . . . 4  |-  ( ( R  e.  Grp  /\  ( X  .x.  .0.  )  e.  B )  ->  ( X  .x.  .0.  )  =  (  .0.  ( +g  `  R ) ( X 
.x.  .0.  ) )
)
2318, 20, 22syl2anc 642 . . 3  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  .0.  )  =  (  .0.  ( +g  `  R ) ( X 
.x.  .0.  ) )
)
2410, 17, 233eqtr3d 2323 . 2  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  (
( X  .x.  .0.  ) ( +g  `  R
) ( X  .x.  .0.  ) )  =  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) ) )
252, 5grprcan 14515 . . 3  |-  ( ( R  e.  Grp  /\  ( ( X  .x.  .0.  )  e.  B  /\  .0.  e.  B  /\  ( X  .x.  .0.  )  e.  B ) )  -> 
( ( ( X 
.x.  .0.  ) ( +g  `  R ) ( X  .x.  .0.  )
)  =  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) )  <->  ( X  .x.  .0.  )  =  .0.  ) )
2618, 20, 13, 20, 25syl13anc 1184 . 2  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  (
( ( X  .x.  .0.  ) ( +g  `  R
) ( X  .x.  .0.  ) )  =  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) )  <->  ( X  .x.  .0.  )  =  .0.  ) )
2724, 26mpbid 201 1  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  ( X  .x.  .0.  )  =  .0.  )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 176    /\ wa 358    /\ w3a 934    = wceq 1623    e. wcel 1684   ` cfv 5255  (class class class)co 5858   Basecbs 13148   +g cplusg 13208   .rcmulr 13209   0gc0g 13400   Grpcgrp 14362   Ringcrg 15337
This theorem is referenced by:  rngnegr  15381  gsumdixp  15392  dvdsr02  15438  isdrng2  15522  drngmul0or  15533  cntzsubr  15577  isabvd  15585  lmodvs0  15664  rrgeq0  16031  unitrrg  16034  domneq0  16038  psrridm  16149  mpllsslem  16180  mplsubrglem  16183  mplcoe1  16209  mplmon2  16234  evlslem4  16245  coe1tmmul2  16352  ocvlss  16572  mdegvscale  19461  mdegmullem  19464  coe1mul3  19485  deg1mul3le  19502  ply1divex  19522  ply1rem  19549  fta1blem  19554  uvcresum  27242  mamurid  27459  cntzsdrg  27510  lfl0f  29259  lfl0sc  29272  lkrlss  29285  lcfrlem33  31765  hdmapinvlem3  32113  hdmapglem7b  32121
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-13 1686  ax-14 1688  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264  ax-sep 4141  ax-nul 4149  ax-pow 4188  ax-pr 4214  ax-un 4512  ax-cnex 8793  ax-resscn 8794  ax-1cn 8795  ax-icn 8796  ax-addcl 8797  ax-addrcl 8798  ax-mulcl 8799  ax-mulrcl 8800  ax-mulcom 8801  ax-addass 8802  ax-mulass 8803  ax-distr 8804  ax-i2m1 8805  ax-1ne0 8806  ax-1rid 8807  ax-rnegex 8808  ax-rrecex 8809  ax-cnre 8810  ax-pre-lttri 8811  ax-pre-lttrn 8812  ax-pre-ltadd 8813  ax-pre-mulgt0 8814
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-eu 2147  df-mo 2148  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-ne 2448  df-nel 2449  df-ral 2548  df-rex 2549  df-reu 2550  df-rmo 2551  df-rab 2552  df-v 2790  df-sbc 2992  df-csb 3082  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-pss 3168  df-nul 3456  df-if 3566  df-pw 3627  df-sn 3646  df-pr 3647  df-tp 3648  df-op 3649  df-uni 3828  df-iun 3907  df-br 4024  df-opab 4078  df-mpt 4079  df-tr 4114  df-eprel 4305  df-id 4309  df-po 4314  df-so 4315  df-fr 4352  df-we 4354  df-ord 4395  df-on 4396  df-lim 4397  df-suc 4398  df-om 4657  df-xp 4695  df-rel 4696  df-cnv 4697  df-co 4698  df-dm 4699  df-rn 4700  df-res 4701  df-ima 4702  df-iota 5219  df-fun 5257  df-fn 5258  df-f 5259  df-f1 5260  df-fo 5261  df-f1o 5262  df-fv 5263  df-ov 5861  df-oprab 5862  df-mpt2 5863  df-riota 6304  df-recs 6388  df-rdg 6423  df-er 6660  df-en 6864  df-dom 6865  df-sdom 6866  df-pnf 8869  df-mnf 8870  df-xr 8871  df-ltxr 8872  df-le 8873  df-sub 9039  df-neg 9040  df-nn 9747  df-2 9804  df-ndx 13151  df-slot 13152  df-base 13153  df-sets 13154  df-plusg 13221  df-0g 13404  df-mnd 14367  df-grp 14489  df-mgp 15326  df-rng 15340
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