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Theorem rngrz 15471
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 15439 . . . . . 6  |-  ( R  e.  Ring  ->  R  e. 
Grp )
2 rngz.b . . . . . . . 8  |-  B  =  ( Base `  R
)
3 rngz.z . . . . . . . 8  |-  .0.  =  ( 0g `  R )
42, 3grpidcl 14603 . . . . . . 7  |-  ( R  e.  Grp  ->  .0.  e.  B )
5 eqid 2358 . . . . . . . 8  |-  ( +g  `  R )  =  ( +g  `  R )
62, 5, 3grplid 14605 . . . . . . 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 5958 . . 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 15452 . . . 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 15447 . . . . 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 14605 . . . . 5  |-  ( ( R  e.  Grp  /\  ( X  .x.  .0.  )  e.  B )  ->  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) )  =  ( X  .x.  .0.  )
)
2221eqcomd 2363 . . . 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 2398 . 2  |-  ( ( R  e.  Ring  /\  X  e.  B )  ->  (
( X  .x.  .0.  ) ( +g  `  R
) ( X  .x.  .0.  ) )  =  (  .0.  ( +g  `  R
) ( X  .x.  .0.  ) ) )
252, 5grprcan 14608 . . 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 1642    e. wcel 1710   ` cfv 5334  (class class class)co 5942   Basecbs 13239   +g cplusg 13299   .rcmulr 13300   0gc0g 13493   Grpcgrp 14455   Ringcrg 15430
This theorem is referenced by:  rngnegr  15474  gsumdixp  15485  dvdsr02  15531  isdrng2  15615  drngmul0or  15626  cntzsubr  15670  isabvd  15678  lmodvs0  15757  rrgeq0  16124  unitrrg  16127  domneq0  16131  psrridm  16242  mpllsslem  16273  mplsubrglem  16276  mplcoe1  16302  mplmon2  16327  evlslem4  16338  coe1tmmul2  16445  ocvlss  16672  mdegvscale  19559  mdegmullem  19562  coe1mul3  19583  deg1mul3le  19600  ply1divex  19620  ply1rem  19647  fta1blem  19652  kerunit  23427  uvcresum  26565  mamurid  26782  cntzsdrg  26833  lfl0f  29311  lfl0sc  29324  lkrlss  29337  lcfrlem33  31817  hdmapinvlem3  32165  hdmapglem7b  32173
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-13 1712  ax-14 1714  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1930  ax-ext 2339  ax-sep 4220  ax-nul 4228  ax-pow 4267  ax-pr 4293  ax-un 4591  ax-cnex 8880  ax-resscn 8881  ax-1cn 8882  ax-icn 8883  ax-addcl 8884  ax-addrcl 8885  ax-mulcl 8886  ax-mulrcl 8887  ax-mulcom 8888  ax-addass 8889  ax-mulass 8890  ax-distr 8891  ax-i2m1 8892  ax-1ne0 8893  ax-1rid 8894  ax-rnegex 8895  ax-rrecex 8896  ax-cnre 8897  ax-pre-lttri 8898  ax-pre-lttrn 8899  ax-pre-ltadd 8900  ax-pre-mulgt0 8901
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-eu 2213  df-mo 2214  df-clab 2345  df-cleq 2351  df-clel 2354  df-nfc 2483  df-ne 2523  df-nel 2524  df-ral 2624  df-rex 2625  df-reu 2626  df-rmo 2627  df-rab 2628  df-v 2866  df-sbc 3068  df-csb 3158  df-dif 3231  df-un 3233  df-in 3235  df-ss 3242  df-pss 3244  df-nul 3532  df-if 3642  df-pw 3703  df-sn 3722  df-pr 3723  df-tp 3724  df-op 3725  df-uni 3907  df-iun 3986  df-br 4103  df-opab 4157  df-mpt 4158  df-tr 4193  df-eprel 4384  df-id 4388  df-po 4393  df-so 4394  df-fr 4431  df-we 4433  df-ord 4474  df-on 4475  df-lim 4476  df-suc 4477  df-om 4736  df-xp 4774  df-rel 4775  df-cnv 4776  df-co 4777  df-dm 4778  df-rn 4779  df-res 4780  df-ima 4781  df-iota 5298  df-fun 5336  df-fn 5337  df-f 5338  df-f1 5339  df-fo 5340  df-f1o 5341  df-fv 5342  df-ov 5945  df-oprab 5946  df-mpt2 5947  df-riota 6388  df-recs 6472  df-rdg 6507  df-er 6744  df-en 6949  df-dom 6950  df-sdom 6951  df-pnf 8956  df-mnf 8957  df-xr 8958  df-ltxr 8959  df-le 8960  df-sub 9126  df-neg 9127  df-nn 9834  df-2 9891  df-ndx 13242  df-slot 13243  df-base 13244  df-sets 13245  df-plusg 13312  df-0g 13497  df-mnd 14460  df-grp 14582  df-mgp 15419  df-rng 15433
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