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Theorem grplmulf1o 12800
Description: Left multiplication by a group element is a bijection on any group. (Contributed by Mario Carneiro, 17-Jan-2015.)
Hypotheses
Ref Expression
grplmulf1o.b  |-  B  =  ( Base `  G
)
grplmulf1o.p  |-  .+  =  ( +g  `  G )
grplmulf1o.n  |-  F  =  ( x  e.  B  |->  ( X  .+  x
) )
Assertion
Ref Expression
grplmulf1o  |-  ( ( G  e.  Grp  /\  X  e.  B )  ->  F : B -1-1-onto-> B )
Distinct variable groups:    x, B    x, G    x,  .+    x, X
Allowed substitution hint:    F( x)

Proof of Theorem grplmulf1o
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 grplmulf1o.n . 2  |-  F  =  ( x  e.  B  |->  ( X  .+  x
) )
2 grplmulf1o.b . . . 4  |-  B  =  ( Base `  G
)
3 grplmulf1o.p . . . 4  |-  .+  =  ( +g  `  G )
42, 3grpcl 12743 . . 3  |-  ( ( G  e.  Grp  /\  X  e.  B  /\  x  e.  B )  ->  ( X  .+  x
)  e.  B )
543expa 1201 . 2  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  x  e.  B
)  ->  ( X  .+  x )  e.  B
)
6 eqid 2173 . . . 4  |-  ( invg `  G )  =  ( invg `  G )
72, 6grpinvcl 12778 . . 3  |-  ( ( G  e.  Grp  /\  X  e.  B )  ->  ( ( invg `  G ) `  X
)  e.  B )
82, 3grpcl 12743 . . . 4  |-  ( ( G  e.  Grp  /\  ( ( invg `  G ) `  X
)  e.  B  /\  y  e.  B )  ->  ( ( ( invg `  G ) `
 X )  .+  y )  e.  B
)
983expa 1201 . . 3  |-  ( ( ( G  e.  Grp  /\  ( ( invg `  G ) `  X
)  e.  B )  /\  y  e.  B
)  ->  ( (
( invg `  G ) `  X
)  .+  y )  e.  B )
107, 9syldanl 449 . 2  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  y  e.  B
)  ->  ( (
( invg `  G ) `  X
)  .+  y )  e.  B )
11 eqcom 2175 . . 3  |-  ( x  =  ( ( ( invg `  G
) `  X )  .+  y )  <->  ( (
( invg `  G ) `  X
)  .+  y )  =  x )
12 simpll 527 . . . . 5  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  ->  G  e.  Grp )
1310adantrl 478 . . . . 5  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( ( invg `  G ) `
 X )  .+  y )  e.  B
)
14 simprl 529 . . . . 5  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  ->  x  e.  B )
15 simplr 528 . . . . 5  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  ->  X  e.  B )
162, 3grplcan 12788 . . . . 5  |-  ( ( G  e.  Grp  /\  ( ( ( ( invg `  G
) `  X )  .+  y )  e.  B  /\  x  e.  B  /\  X  e.  B
) )  ->  (
( X  .+  (
( ( invg `  G ) `  X
)  .+  y )
)  =  ( X 
.+  x )  <->  ( (
( invg `  G ) `  X
)  .+  y )  =  x ) )
1712, 13, 14, 15, 16syl13anc 1238 . . . 4  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( X  .+  ( ( ( invg `  G ) `
 X )  .+  y ) )  =  ( X  .+  x
)  <->  ( ( ( invg `  G
) `  X )  .+  y )  =  x ) )
18 eqid 2173 . . . . . . . . 9  |-  ( 0g
`  G )  =  ( 0g `  G
)
192, 3, 18, 6grprinv 12780 . . . . . . . 8  |-  ( ( G  e.  Grp  /\  X  e.  B )  ->  ( X  .+  (
( invg `  G ) `  X
) )  =  ( 0g `  G ) )
2019adantr 276 . . . . . . 7  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( X  .+  (
( invg `  G ) `  X
) )  =  ( 0g `  G ) )
2120oveq1d 5877 . . . . . 6  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( X  .+  ( ( invg `  G ) `  X
) )  .+  y
)  =  ( ( 0g `  G ) 
.+  y ) )
227adantr 276 . . . . . . 7  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( invg `  G ) `  X
)  e.  B )
23 simprr 530 . . . . . . 7  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
y  e.  B )
242, 3grpass 12744 . . . . . . 7  |-  ( ( G  e.  Grp  /\  ( X  e.  B  /\  ( ( invg `  G ) `  X
)  e.  B  /\  y  e.  B )
)  ->  ( ( X  .+  ( ( invg `  G ) `
 X ) ) 
.+  y )  =  ( X  .+  (
( ( invg `  G ) `  X
)  .+  y )
) )
2512, 15, 22, 23, 24syl13anc 1238 . . . . . 6  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( X  .+  ( ( invg `  G ) `  X
) )  .+  y
)  =  ( X 
.+  ( ( ( invg `  G
) `  X )  .+  y ) ) )
262, 3, 18grplid 12763 . . . . . . 7  |-  ( ( G  e.  Grp  /\  y  e.  B )  ->  ( ( 0g `  G )  .+  y
)  =  y )
2726ad2ant2rl 511 . . . . . 6  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( 0g `  G )  .+  y
)  =  y )
2821, 25, 273eqtr3d 2214 . . . . 5  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( X  .+  (
( ( invg `  G ) `  X
)  .+  y )
)  =  y )
2928eqeq1d 2182 . . . 4  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( X  .+  ( ( ( invg `  G ) `
 X )  .+  y ) )  =  ( X  .+  x
)  <->  y  =  ( X  .+  x ) ) )
3017, 29bitr3d 191 . . 3  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( ( ( ( invg `  G
) `  X )  .+  y )  =  x  <-> 
y  =  ( X 
.+  x ) ) )
3111, 30bitrid 193 . 2  |-  ( ( ( G  e.  Grp  /\  X  e.  B )  /\  ( x  e.  B  /\  y  e.  B ) )  -> 
( x  =  ( ( ( invg `  G ) `  X
)  .+  y )  <->  y  =  ( X  .+  x ) ) )
321, 5, 10, 31f1o2d 6063 1  |-  ( ( G  e.  Grp  /\  X  e.  B )  ->  F : B -1-1-onto-> B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    = wceq 1351    e. wcel 2144    |-> cmpt 4056   -1-1-onto->wf1o 5204   ` cfv 5205  (class class class)co 5862   Basecbs 12425   +g cplusg 12489   0gc0g 12623   Grpcgrp 12735   invgcminusg 12736
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-io 707  ax-5 1443  ax-7 1444  ax-gen 1445  ax-ie1 1489  ax-ie2 1490  ax-8 1500  ax-10 1501  ax-11 1502  ax-i12 1503  ax-bndl 1505  ax-4 1506  ax-17 1522  ax-i9 1526  ax-ial 1530  ax-i5r 1531  ax-13 2146  ax-14 2147  ax-ext 2155  ax-coll 4110  ax-sep 4113  ax-pow 4166  ax-pr 4200  ax-un 4424  ax-cnex 7874  ax-resscn 7875  ax-1re 7877  ax-addrcl 7880
This theorem depends on definitions:  df-bi 117  df-3an 978  df-tru 1354  df-nf 1457  df-sb 1759  df-eu 2025  df-mo 2026  df-clab 2160  df-cleq 2166  df-clel 2169  df-nfc 2304  df-ral 2456  df-rex 2457  df-reu 2458  df-rmo 2459  df-rab 2460  df-v 2735  df-sbc 2959  df-csb 3053  df-un 3128  df-in 3130  df-ss 3137  df-pw 3571  df-sn 3592  df-pr 3593  df-op 3595  df-uni 3803  df-int 3838  df-iun 3881  df-br 3996  df-opab 4057  df-mpt 4058  df-id 4284  df-xp 4623  df-rel 4624  df-cnv 4625  df-co 4626  df-dm 4627  df-rn 4628  df-res 4629  df-ima 4630  df-iota 5167  df-fun 5207  df-fn 5208  df-f 5209  df-f1 5210  df-fo 5211  df-f1o 5212  df-fv 5213  df-riota 5818  df-ov 5865  df-inn 8888  df-2 8946  df-ndx 12428  df-slot 12429  df-base 12431  df-plusg 12502  df-0g 12625  df-mgm 12637  df-sgrp 12670  df-mnd 12680  df-grp 12738  df-minusg 12739
This theorem is referenced by: (None)
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