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Theorem opprring 14111
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 2231 . . 3  |-  ( Base `  R )  =  (
Base `  R )
31, 2opprbasg 14107 . 2  |-  ( R  e.  Ring  ->  ( Base `  R )  =  (
Base `  O )
)
4 eqid 2231 . . 3  |-  ( +g  `  R )  =  ( +g  `  R )
51, 4oppraddg 14108 . 2  |-  ( R  e.  Ring  ->  ( +g  `  R )  =  ( +g  `  O ) )
6 eqidd 2232 . 2  |-  ( R  e.  Ring  ->  ( .r
`  O )  =  ( .r `  O
) )
7 ringgrp 14033 . . 3  |-  ( R  e.  Ring  ->  R  e. 
Grp )
8 eqidd 2232 . . . 4  |-  ( R  e.  Ring  ->  ( Base `  R )  =  (
Base `  R )
)
95oveqdr 6046 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
) ) )  -> 
( x ( +g  `  R ) y )  =  ( x ( +g  `  O ) y ) )
108, 3, 9grppropd 13618 . . 3  |-  ( R  e.  Ring  ->  ( R  e.  Grp  <->  O  e.  Grp ) )
117, 10mpbid 147 . 2  |-  ( R  e.  Ring  ->  O  e. 
Grp )
12 eqid 2231 . . . 4  |-  ( .r
`  R )  =  ( .r `  R
)
13 eqid 2231 . . . 4  |-  ( .r
`  O )  =  ( .r `  O
)
142, 12, 1, 13opprmulg 14103 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( x
( .r `  O
) y )  =  ( y ( .r
`  R ) x ) )
152, 12ringcl 14045 . . . 4  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  x  e.  ( Base `  R )
)  ->  ( y
( .r `  R
) x )  e.  ( Base `  R
) )
16153com23 1235 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( y
( .r `  R
) x )  e.  ( Base `  R
) )
1714, 16eqeltrd 2308 . 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 1031 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  z  e.  ( Base `  R
) )
20 simpr2 1030 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  y  e.  ( Base `  R
) )
21 simpr1 1029 . . . 4  |-  ( ( R  e.  Ring  /\  (
x  e.  ( Base `  R )  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
) )  ->  x  e.  ( Base `  R
) )
222, 12ringass 14048 . . . 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 1275 . . 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 14103 . . . . . 6  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( y
( .r `  O
) z )  =  ( z ( .r
`  R ) y ) )
25243adant3r1 1238 . . . . 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 6034 . . . 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 14045 . . . . . 6  |-  ( ( R  e.  Ring  /\  z  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( z
( .r `  R
) y )  e.  ( Base `  R
) )
2818, 19, 20, 27syl3anc 1273 . . . . 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 14103 . . . . 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 1273 . . . 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 2264 . . 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 6033 . . . . 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 1240 . . . 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 1240 . . . . 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 14103 . . . . 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 1273 . . . 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 2264 . . 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 2275 . 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 14051 . . . 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 1275 . . 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 14062 . . . . 5  |-  ( ( R  e.  Ring  /\  y  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( y
( +g  `  R ) z )  e.  (
Base `  R )
)
42413adant3r1 1238 . . . 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 14103 . . . 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 1273 . . 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 1240 . . . 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 14103 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  z  e.  ( Base `  R )
)  ->  ( x
( .r `  O
) z )  =  ( z ( .r
`  R ) x ) )
47463adant3r2 1239 . . . 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 6036 . . 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 2274 . 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 14050 . . . 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 1275 . . 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 14062 . . . . 5  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
)  /\  y  e.  ( Base `  R )
)  ->  ( x
( +g  `  R ) y )  e.  (
Base `  R )
)
53523adant3r3 1240 . . . 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 14103 . . . 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 1273 . . 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 6036 . . 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 2274 . 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 2231 . . 3  |-  ( 1r
`  R )  =  ( 1r `  R
)
592, 58ringidcl 14052 . 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 14103 . . . 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 1273 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  O ) x )  =  ( x ( .r `  R ) ( 1r `  R
) ) )
652, 12, 58ringridm 14056 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
x ( .r `  R ) ( 1r
`  R ) )  =  x )
6664, 65eqtrd 2264 . 2  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  O ) x )  =  x )
672, 12, 1, 13opprmulg 14103 . . . 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 1273 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
x ( .r `  O ) ( 1r
`  R ) )  =  ( ( 1r
`  R ) ( .r `  R ) x ) )
692, 12, 58ringlidm 14055 . . 3  |-  ( ( R  e.  Ring  /\  x  e.  ( Base `  R
) )  ->  (
( 1r `  R
) ( .r `  R ) x )  =  x )
7068, 69eqtrd 2264 . 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 14073 1  |-  ( R  e.  Ring  ->  O  e. 
Ring )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1004    = wceq 1397    e. wcel 2202   ` cfv 5326  (class class class)co 6018   Basecbs 13100   +g cplusg 13178   .rcmulr 13179   Grpcgrp 13601   1rcur 13991   Ringcrg 14028  opprcoppr 14099
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 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8123  ax-resscn 8124  ax-1cn 8125  ax-1re 8126  ax-icn 8127  ax-addcl 8128  ax-addrcl 8129  ax-mulcl 8130  ax-addcom 8132  ax-addass 8134  ax-i2m1 8137  ax-0lt1 8138  ax-0id 8140  ax-rnegex 8141  ax-pre-ltirr 8144  ax-pre-lttrn 8146  ax-pre-ltadd 8148
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-reu 2517  df-rmo 2518  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-fv 5334  df-riota 5971  df-ov 6021  df-oprab 6022  df-mpo 6023  df-tpos 6411  df-pnf 8216  df-mnf 8217  df-ltxr 8219  df-inn 9144  df-2 9202  df-3 9203  df-ndx 13103  df-slot 13104  df-base 13106  df-sets 13107  df-plusg 13191  df-mulr 13192  df-0g 13359  df-mgm 13457  df-sgrp 13503  df-mnd 13518  df-grp 13604  df-mgp 13953  df-ur 13992  df-ring 14030  df-oppr 14100
This theorem is referenced by:  opprringbg  14112  mulgass3  14117  1unit  14140  opprunitd  14143  crngunit  14144  unitmulcl  14146  unitgrp  14149  unitnegcl  14163  unitpropdg  14181  subrguss  14269  subrgunit  14272  isridl  14537  ridl0  14543  ridl1  14544
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