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Theorem opprring 14384
Description: An opposite ring is a ring. (Contributed by Mario Carneiro, 1-Dec-2014.) (Revised by Mario Carneiro, 30-Aug-2015.)
Hypothesis
Ref Expression
opprbas.1  |-  O  =  (oppr
`  R )
Assertion
Ref Expression
opprring  |-  ( R  e.  Ring  ->  O  e. 
Ring )

Proof of Theorem opprring
Dummy variables  x  y  z are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 opprbas.1 . . 3  |-  O  =  (oppr
`  R )
2 eqid 2238 . . 3  |-  ( Base `  R )  =  (
Base `  R )
31, 2opprbasg 14380 . 2  |-  ( R  e.  Ring  ->  ( Base `  R )  =  (
Base `  O )
)
4 eqid 2238 . . 3  |-  ( +g  `  R )  =  ( +g  `  R )
51, 4oppraddg 14381 . 2  |-  ( R  e.  Ring  ->  ( +g  `  R )  =  ( +g  `  O ) )
6 eqidd 2239 . 2  |-  ( R  e.  Ring  ->  ( .r
`  O )  =  ( .r `  O
) )
7 ringgrp 14305 . . 3  |-  ( R  e.  Ring  ->  R  e. 
Grp )
8 eqidd 2239 . . . 4  |-  ( R  e.  Ring  ->  ( Base `  R )  =  (
Base `  R )
)
95oveqdr 6113 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
) ) )  -> 
( x ( +g  `  R ) y )  =  ( x ( +g  `  O ) y ) )
108, 3, 9grppropd 13822 . . 3  |-  ( R  e.  Ring  ->  ( R  e.  Grp  <->  O  e.  Grp ) )
117, 10mpbid 147 . 2  |-  ( R  e.  Ring  ->  O  e. 
Grp )
12 eqid 2238 . . . 4  |-  ( .r
`  R )  =  ( .r `  R
)
13 eqid 2238 . . . 4  |-  ( .r
`  O )  =  ( .r `  O
)
142, 12, 1, 13opprmulg 14376 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( x
( .r `  O
) y )  =  ( y ( .r
`  R ) x ) )
152, 12ringcl 14317 . . . 4  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  x  e.  ( Base `  R )
)  ->  ( y
( .r `  R
) x )  e.  ( Base `  R
) )
16153com23 1240 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( y
( .r `  R
) x )  e.  ( Base `  R
) )
1714, 16eqeltrd 2315 . 2  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( x
( .r `  O
) y )  e.  ( Base `  R
) )
18 simpl 109 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  R  e.  Ring )
19 simpr3 1036 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  z  e.  ( Base `  R
) )
20 simpr2 1035 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  y  e.  ( Base `  R
) )
21 simpr1 1034 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  x  e.  ( Base `  R
) )
222, 12ringass 14320 . . . 4  |-  ( ( R  e.  Ring  /\  (
z  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  x  e.  ( Base `  R )
) )  ->  (
( z ( .r
`  R ) y ) ( .r `  R ) x )  =  ( z ( .r `  R ) ( y ( .r
`  R ) x ) ) )
2318, 19, 20, 21, 22syl13anc 1280 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( z ( .r
`  R ) y ) ( .r `  R ) x )  =  ( z ( .r `  R ) ( y ( .r
`  R ) x ) ) )
242, 12, 1, 13opprmulg 14376 . . . . . 6  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( y
( .r `  O
) z )  =  ( z ( .r
`  R ) y ) )
25243adant3r1 1243 . . . . 5  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
y ( .r `  O ) z )  =  ( z ( .r `  R ) y ) )
2625oveq2d 6101 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) ( y ( .r `  O
) z ) )  =  ( x ( .r `  O ) ( z ( .r
`  R ) y ) ) )
272, 12ringcl 14317 . . . . . 6  |-  ( ( R  e.  Ring  /\  z  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( z
( .r `  R
) y )  e.  ( Base `  R
) )
2818, 19, 20, 27syl3anc 1278 . . . . 5  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
z ( .r `  R ) y )  e.  ( Base `  R
) )
292, 12, 1, 13opprmulg 14376 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  ( z
( .r `  R
) y )  e.  ( Base `  R
) )  ->  (
x ( .r `  O ) ( z ( .r `  R
) y ) )  =  ( ( z ( .r `  R
) y ) ( .r `  R ) x ) )
3018, 21, 28, 29syl3anc 1278 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) ( z ( .r `  R
) y ) )  =  ( ( z ( .r `  R
) y ) ( .r `  R ) x ) )
3126, 30eqtrd 2271 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) ( y ( .r `  O
) z ) )  =  ( ( z ( .r `  R
) y ) ( .r `  R ) x ) )
3214oveq1d 6100 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( (
x ( .r `  O ) y ) ( .r `  O
) z )  =  ( ( y ( .r `  R ) x ) ( .r
`  O ) z ) )
33323adant3r3 1245 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( .r
`  O ) y ) ( .r `  O ) z )  =  ( ( y ( .r `  R
) x ) ( .r `  O ) z ) )
34163adant3r3 1245 . . . . 5  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
y ( .r `  R ) x )  e.  ( Base `  R
) )
352, 12, 1, 13opprmulg 14376 . . . . 5  |-  ( ( R  e.  Ring  /\  (
y ( .r `  R ) x )  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( (
y ( .r `  R ) x ) ( .r `  O
) z )  =  ( z ( .r
`  R ) ( y ( .r `  R ) x ) ) )
3618, 34, 19, 35syl3anc 1278 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( y ( .r
`  R ) x ) ( .r `  O ) z )  =  ( z ( .r `  R ) ( y ( .r
`  R ) x ) ) )
3733, 36eqtrd 2271 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( .r
`  O ) y ) ( .r `  O ) z )  =  ( z ( .r `  R ) ( y ( .r
`  R ) x ) ) )
3823, 31, 373eqtr4rd 2282 . 2  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( .r
`  O ) y ) ( .r `  O ) z )  =  ( x ( .r `  O ) ( y ( .r
`  O ) z ) ) )
392, 4, 12ringdir 14324 . . . 4  |-  ( ( R  e.  Ring  /\  (
y  e.  ( Base `  R )  /\  z  e.  ( Base `  R
)  /\  x  e.  ( Base `  R )
) )  ->  (
( y ( +g  `  R ) z ) ( .r `  R
) x )  =  ( ( y ( .r `  R ) x ) ( +g  `  R ) ( z ( .r `  R
) x ) ) )
4018, 20, 19, 21, 39syl13anc 1280 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( y ( +g  `  R ) z ) ( .r `  R
) x )  =  ( ( y ( .r `  R ) x ) ( +g  `  R ) ( z ( .r `  R
) x ) ) )
412, 4ringacl 14335 . . . . 5  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( y
( +g  `  R ) z )  e.  (
Base `  R )
)
42413adant3r1 1243 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
y ( +g  `  R
) z )  e.  ( Base `  R
) )
432, 12, 1, 13opprmulg 14376 . . . 4  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  ( y
( +g  `  R ) z )  e.  (
Base `  R )
)  ->  ( x
( .r `  O
) ( y ( +g  `  R ) z ) )  =  ( ( y ( +g  `  R ) z ) ( .r
`  R ) x ) )
4418, 21, 42, 43syl3anc 1278 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) ( y ( +g  `  R
) z ) )  =  ( ( y ( +g  `  R
) z ) ( .r `  R ) x ) )
45143adant3r3 1245 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) y )  =  ( y ( .r `  R ) x ) )
462, 12, 1, 13opprmulg 14376 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( x
( .r `  O
) z )  =  ( z ( .r
`  R ) x ) )
47463adant3r2 1244 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) z )  =  ( z ( .r `  R ) x ) )
4845, 47oveq12d 6103 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( .r
`  O ) y ) ( +g  `  R
) ( x ( .r `  O ) z ) )  =  ( ( y ( .r `  R ) x ) ( +g  `  R ) ( z ( .r `  R
) x ) ) )
4940, 44, 483eqtr4d 2281 . 2  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( .r `  O ) ( y ( +g  `  R
) z ) )  =  ( ( x ( .r `  O
) y ) ( +g  `  R ) ( x ( .r
`  O ) z ) ) )
502, 4, 12ringdi 14323 . . . 4  |-  ( ( R  e.  Ring  /\  (
z  e.  ( Base `  R )  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
) )  ->  (
z ( .r `  R ) ( x ( +g  `  R
) y ) )  =  ( ( z ( .r `  R
) x ) ( +g  `  R ) ( z ( .r
`  R ) y ) ) )
5118, 19, 21, 20, 50syl13anc 1280 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
z ( .r `  R ) ( x ( +g  `  R
) y ) )  =  ( ( z ( .r `  R
) x ) ( +g  `  R ) ( z ( .r
`  R ) y ) ) )
522, 4ringacl 14335 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( x
( +g  `  R ) y )  e.  (
Base `  R )
)
53523adant3r3 1245 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
x ( +g  `  R
) y )  e.  ( Base `  R
) )
542, 12, 1, 13opprmulg 14376 . . . 4  |-  ( ( R  e.  Ring  /\  (
x ( +g  `  R
) y )  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( (
x ( +g  `  R
) y ) ( .r `  O ) z )  =  ( z ( .r `  R ) ( x ( +g  `  R
) y ) ) )
5518, 53, 19, 54syl3anc 1278 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( +g  `  R ) y ) ( .r `  O
) z )  =  ( z ( .r
`  R ) ( x ( +g  `  R
) y ) ) )
5647, 25oveq12d 6103 . . 3  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( .r
`  O ) z ) ( +g  `  R
) ( y ( .r `  O ) z ) )  =  ( ( z ( .r `  R ) x ) ( +g  `  R ) ( z ( .r `  R
) y ) ) )
5751, 55, 563eqtr4d 2281 . 2  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  (
( x ( +g  `  R ) y ) ( .r `  O
) z )  =  ( ( x ( .r `  O ) z ) ( +g  `  R ) ( y ( .r `  O
) z ) ) )
58 eqid 2238 . . 3  |-  ( 1r
`  R )  =  ( 1r `  R
)
592, 58ringidcl 14325 . 2  |-  ( R  e.  Ring  ->  ( 1r
`  R )  e.  ( Base `  R
) )
60 simpl 109 . . . 4  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  R  e.  Ring )
6160, 59syl 14 . . . 4  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  ( 1r `  R )  e.  ( Base `  R
) )
62 simpr 110 . . . 4  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  x  e.  ( Base `  R
) )
632, 12, 1, 13opprmulg 14376 . . . 4  |-  ( ( R  e.  Ring  /\  ( 1r `  R )  e.  ( Base `  R
)  /\  x  e.  ( Base `  R )
)  ->  ( ( 1r `  R ) ( .r `  O ) x )  =  ( x ( .r `  R ) ( 1r
`  R ) ) )
6460, 61, 62, 63syl3anc 1278 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  O ) x )  =  ( x ( .r `  R ) ( 1r `  R
) ) )
652, 12, 58ringridm 14329 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
x ( .r `  R ) ( 1r
`  R ) )  =  x )
6664, 65eqtrd 2271 . 2  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  O ) x )  =  x )
672, 12, 1, 13opprmulg 14376 . . . 4  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  ( 1r `  R )  e.  (
Base `  R )
)  ->  ( x
( .r `  O
) ( 1r `  R ) )  =  ( ( 1r `  R ) ( .r
`  R ) x ) )
6860, 62, 61, 67syl3anc 1278 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
x ( .r `  O ) ( 1r
`  R ) )  =  ( ( 1r
`  R ) ( .r `  R ) x ) )
692, 12, 58ringlidm 14328 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  R ) x )  =  x )
7068, 69eqtrd 2271 . 2  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
x ( .r `  O ) ( 1r
`  R ) )  =  x )
713, 5, 6, 11, 17, 38, 49, 57, 59, 66, 70isringd 14346 1  |-  ( R  e.  Ring  ->  O  e. 
Ring )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    /\ w3a 1009    = wceq 1402    e. wcel 2209   ` cfv 5377  (class class class)co 6085   Basecbs 13352   +g cplusg 13431   .rcmulr 13432   Grpcgrp 13805   1rcur 14262   Ringcrg 14300  opprcoppr 14372
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-nul 4259  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-tpos 6516  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-plusg 13444  df-mulr 13445  df-0g 13612  df-mgm 13676  df-sgrp 13717  df-mnd 13730  df-grp 13808  df-mgp 14218  df-ur 14263  df-ring 14302  df-oppr 14373
This theorem is used by:  opprringbg  14385  mulgass3  14391  1unit  14414  opprunitd  14417  crngunit  14418  unitmulcl  14420  unitgrp  14423  unitnegcl  14437  unitpropdg  14455  subrguss  14544  subrgunit  14547  isridl  14841  ridl0  14847  ridl1  14848
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