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Theorem imasaddfn 13638
Description: The image structure's group operation is a function. (Contributed by Mario Carneiro, 23-Feb-2015.) (Revised by Mario Carneiro, 10-Jul-2015.)
Hypotheses
Ref Expression
imasaddf.f  |-  ( ph  ->  F : V -onto-> B
)
imasaddf.e  |-  ( (
ph  /\  ( a  e.  V  /\  b  e.  V )  /\  (
p  e.  V  /\  q  e.  V )
)  ->  ( (
( F `  a
)  =  ( F `
 p )  /\  ( F `  b )  =  ( F `  q ) )  -> 
( F `  (
a  .x.  b )
)  =  ( F `
 ( p  .x.  q ) ) ) )
imasaddf.u  |-  ( ph  ->  U  =  ( F 
"s  R ) )
imasaddf.v  |-  ( ph  ->  V  =  ( Base `  R ) )
imasaddf.r  |-  ( ph  ->  R  e.  Z )
imasaddf.p  |-  .x.  =  ( +g  `  R )
imasaddf.a  |-  .xb  =  ( +g  `  U )
Assertion
Ref Expression
imasaddfn  |-  ( ph  -> 
.xb  Fn  ( B  X.  B ) )
Distinct variable groups:    q, p, B    R, p, q    a, b, p, q, V    .x. , p, q    F, a, b, p, q    ph, a, b, p, q    .xb , a, b, p, q
Allowed substitution hints:    B( a,  b)    R( a,  b)    .x. ( a,  b)    U( q,  p,  a,  b)    Z( q,  p,  a,  b)

Proof of Theorem imasaddfn
StepHypRef Expression
1 imasaddf.f . 2  |-  ( ph  ->  F : V -onto-> B
)
2 imasaddf.e . 2  |-  ( (
ph  /\  ( a  e.  V  /\  b  e.  V )  /\  (
p  e.  V  /\  q  e.  V )
)  ->  ( (
( F `  a
)  =  ( F `
 p )  /\  ( F `  b )  =  ( F `  q ) )  -> 
( F `  (
a  .x.  b )
)  =  ( F `
 ( p  .x.  q ) ) ) )
3 imasaddf.u . . 3  |-  ( ph  ->  U  =  ( F 
"s  R ) )
4 imasaddf.v . . 3  |-  ( ph  ->  V  =  ( Base `  R ) )
5 imasaddf.r . . 3  |-  ( ph  ->  R  e.  Z )
6 imasaddf.p . . 3  |-  .x.  =  ( +g  `  R )
7 imasaddf.a . . 3  |-  .xb  =  ( +g  `  U )
83, 4, 1, 5, 6, 7imasplusg 13629 . 2  |-  ( ph  -> 
.xb  =  U_ p  e.  V  U_ q  e.  V  { <. <. ( F `  p ) ,  ( F `  q ) >. ,  ( F `  ( p 
.x.  q ) )
>. } )
9 basfn 13411 . . . 4  |-  Base  Fn  _V
105elexd 2835 . . . 4  |-  ( ph  ->  R  e.  _V )
11 funfvex 5712 . . . . 5  |-  ( ( Fun  Base  /\  R  e. 
dom  Base )  ->  ( Base `  R )  e. 
_V )
1211funfni 5483 . . . 4  |-  ( (
Base  Fn  _V  /\  R  e.  _V )  ->  ( Base `  R )  e. 
_V )
139, 10, 12sylancr 418 . . 3  |-  ( ph  ->  ( Base `  R
)  e.  _V )
144, 13eqeltrd 2315 . 2  |-  ( ph  ->  V  e.  _V )
15 plusgslid 13466 . . . . 5  |-  ( +g  = Slot  ( +g  `  ndx )  /\  ( +g  `  ndx )  e.  NN )
1615slotex 13379 . . . 4  |-  ( R  e.  Z  ->  ( +g  `  R )  e. 
_V )
175, 16syl 14 . . 3  |-  ( ph  ->  ( +g  `  R
)  e.  _V )
186, 17eqeltrid 2325 . 2  |-  ( ph  ->  .x.  e.  _V )
191, 2, 8, 14, 18imasaddfnlemg 13635 1  |-  ( ph  -> 
.xb  Fn  ( B  X.  B ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    /\ w3a 1009    = wceq 1402    e. wcel 2209   _Vcvv 2821    X. cxp 4772    Fn wfn 5372   -onto->wfo 5375   ` cfv 5377  (class class class)co 6085   Basecbs 13352   +g cplusg 13431    "s cimas 13622
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-coll 4246  ax-sep 4249  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-ltadd 8295
This proof depends on definitions:  df-bi 117  df-3or 1010  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-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-tp 3717  df-op 3718  df-uni 3936  df-int 3971  df-iun 4014  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-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  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-plusg 13444  df-mulr 13445  df-iimas 13624
This theorem is used by: (None)
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