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Theorem plusfvalg 12594
Description: The group addition operation as a function. (Contributed by Mario Carneiro, 14-Aug-2015.)
Hypotheses
Ref Expression
plusffval.1  |-  B  =  ( Base `  G
)
plusffval.2  |-  .+  =  ( +g  `  G )
plusffval.3  |-  .+^  =  ( +f `  G
)
Assertion
Ref Expression
plusfvalg  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .+^  Y )  =  ( X  .+  Y ) )

Proof of Theorem plusfvalg
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 plusffval.1 . . . 4  |-  B  =  ( Base `  G
)
2 plusffval.2 . . . 4  |-  .+  =  ( +g  `  G )
3 plusffval.3 . . . 4  |-  .+^  =  ( +f `  G
)
41, 2, 3plusffvalg 12593 . . 3  |-  ( G  e.  V  ->  .+^  =  ( x  e.  B , 
y  e.  B  |->  ( x  .+  y ) ) )
543ad2ant1 1008 . 2  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  -> 
.+^  =  ( x  e.  B ,  y  e.  B  |->  ( x 
.+  y ) ) )
6 oveq12 5851 . . 3  |-  ( ( x  =  X  /\  y  =  Y )  ->  ( x  .+  y
)  =  ( X 
.+  Y ) )
76adantl 275 . 2  |-  ( ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B
)  /\  ( x  =  X  /\  y  =  Y ) )  -> 
( x  .+  y
)  =  ( X 
.+  Y ) )
8 simp2 988 . 2  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  X  e.  B )
9 simp3 989 . 2  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  Y  e.  B )
10 plusgslid 12490 . . . . . 6  |-  ( +g  = Slot  ( +g  `  ndx )  /\  ( +g  `  ndx )  e.  NN )
1110slotex 12421 . . . . 5  |-  ( G  e.  V  ->  ( +g  `  G )  e. 
_V )
122, 11eqeltrid 2253 . . . 4  |-  ( G  e.  V  ->  .+  e.  _V )
13123ad2ant1 1008 . . 3  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  .+  e.  _V )
14 ovexg 5876 . . 3  |-  ( ( X  e.  B  /\  .+  e.  _V  /\  Y  e.  B )  ->  ( X  .+  Y )  e. 
_V )
158, 13, 9, 14syl3anc 1228 . 2  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .+  Y
)  e.  _V )
165, 7, 8, 9, 15ovmpod 5969 1  |-  ( ( G  e.  V  /\  X  e.  B  /\  Y  e.  B )  ->  ( X  .+^  Y )  =  ( X  .+  Y ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    /\ w3a 968    = wceq 1343    e. wcel 2136   _Vcvv 2726   ` cfv 5188  (class class class)co 5842    e. cmpo 5844   Basecbs 12394   +g cplusg 12457   +fcplusf 12584
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-coll 4097  ax-sep 4100  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-cnex 7844  ax-resscn 7845  ax-1re 7847  ax-addrcl 7850
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-ral 2449  df-rex 2450  df-reu 2451  df-rab 2453  df-v 2728  df-sbc 2952  df-csb 3046  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-iun 3868  df-br 3983  df-opab 4044  df-mpt 4045  df-id 4271  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-f1 5193  df-fo 5194  df-f1o 5195  df-fv 5196  df-ov 5845  df-oprab 5846  df-mpo 5847  df-1st 6108  df-2nd 6109  df-inn 8858  df-2 8916  df-ndx 12397  df-slot 12398  df-base 12400  df-plusg 12470  df-plusf 12586
This theorem is referenced by: (None)
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