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Metamath Proof Explorer

Theorem imassca

Description: The scalar field of an image structure. (Contributed by Mario Carneiro, 23-Feb-2015) (Revised by Thierry Arnoux, 16-Jun-2019)

Ref Expression
Hypotheses imasbas.u 
|- ( ph -> U = ( F "s R ) )
imasbas.v 
|- ( ph -> V = ( Base ` R ) )
imasbas.f 
|- ( ph -> F : V -onto-> B )
imasbas.r 
|- ( ph -> R e. Z )
imassca.g 
|- G = ( Scalar ` R )
Assertion imassca 
|- ( ph -> G = ( Scalar ` U ) )

Proof

Step Hyp Ref Expression
1 imasbas.u 
 |-  ( ph -> U = ( F "s R ) )
2 imasbas.v 
 |-  ( ph -> V = ( Base ` R ) )
3 imasbas.f 
 |-  ( ph -> F : V -onto-> B )
4 imasbas.r 
 |-  ( ph -> R e. Z )
5 imassca.g 
 |-  G = ( Scalar ` R )
6 5 fvexi 
 |-  G e. _V
7 eqid 
 |-  ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) = ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } )
8 7 imasvalstr 
 |-  ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) Struct <. 1 , ; 1 2 >.
9 scaid 
 |-  Scalar = Slot ( Scalar ` ndx )
10 snsstp1 
 |-  { <. ( Scalar ` ndx ) , G >. } C_ { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. }
11 ssun2 
 |-  { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } C_ ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } )
12 10 11 sstri 
 |-  { <. ( Scalar ` ndx ) , G >. } C_ ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } )
13 ssun1 
 |-  ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) C_ ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } )
14 12 13 sstri 
 |-  { <. ( Scalar ` ndx ) , G >. } C_ ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } )
15 8 9 14 strfv 
 |-  ( G e. _V -> G = ( Scalar ` ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) ) )
16 6 15 ax-mp 
 |-  G = ( Scalar ` ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) )
17 eqid 
 |-  ( +g ` R ) = ( +g ` R )
18 eqid 
 |-  ( .r ` R ) = ( .r ` R )
19 eqid 
 |-  ( Base ` G ) = ( Base ` G )
20 eqid 
 |-  ( .s ` R ) = ( .s ` R )
21 eqid 
 |-  ( .i ` R ) = ( .i ` R )
22 eqid 
 |-  ( TopOpen ` R ) = ( TopOpen ` R )
23 eqid 
 |-  ( dist ` R ) = ( dist ` R )
24 eqid 
 |-  ( le ` R ) = ( le ` R )
25 eqid 
 |-  ( +g ` U ) = ( +g ` U )
26 1 2 3 4 17 25 imasplusg 
 |-  ( ph -> ( +g ` U ) = U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( F ` ( p ( +g ` R ) q ) ) >. } )
27 eqid 
 |-  ( .r ` U ) = ( .r ` U )
28 1 2 3 4 18 27 imasmulr 
 |-  ( ph -> ( .r ` U ) = U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( F ` ( p ( .r ` R ) q ) ) >. } )
29 eqidd 
 |-  ( ph -> U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) = U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) )
30 eqidd 
 |-  ( ph -> U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } = U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } )
31 eqidd 
 |-  ( ph -> ( ( TopOpen ` R ) qTop F ) = ( ( TopOpen ` R ) qTop F ) )
32 eqid 
 |-  ( dist ` U ) = ( dist ` U )
33 1 2 3 4 23 32 imasds 
 |-  ( ph -> ( dist ` U ) = ( x e. B , y e. B |-> inf ( U_ n e. NN ran ( g e. { h e. ( ( V X. V ) ^m ( 1 ... n ) ) | ( ( F ` ( 1st ` ( h ` 1 ) ) ) = x /\ ( F ` ( 2nd ` ( h ` n ) ) ) = y /\ A. i e. ( 1 ... ( n - 1 ) ) ( F ` ( 2nd ` ( h ` i ) ) ) = ( F ` ( 1st ` ( h ` ( i + 1 ) ) ) ) ) } |-> ( RR*s gsum ( ( dist ` R ) o. g ) ) ) , RR* , < ) ) )
34 eqidd 
 |-  ( ph -> ( ( F o. ( le ` R ) ) o. `' F ) = ( ( F o. ( le ` R ) ) o. `' F ) )
35 1 2 17 18 5 19 20 21 22 23 24 26 28 29 30 31 33 34 3 4 imasval 
 |-  ( ph -> U = ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) )
36 35 fveq2d 
 |-  ( ph -> ( Scalar ` U ) = ( Scalar ` ( ( { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , ( +g ` U ) >. , <. ( .r ` ndx ) , ( .r ` U ) >. } u. { <. ( Scalar ` ndx ) , G >. , <. ( .s ` ndx ) , U_ q e. V ( p e. ( Base ` G ) , x e. { ( F ` q ) } |-> ( F ` ( p ( .s ` R ) q ) ) ) >. , <. ( .i ` ndx ) , U_ p e. V U_ q e. V { <. <. ( F ` p ) , ( F ` q ) >. , ( p ( .i ` R ) q ) >. } >. } ) u. { <. ( TopSet ` ndx ) , ( ( TopOpen ` R ) qTop F ) >. , <. ( le ` ndx ) , ( ( F o. ( le ` R ) ) o. `' F ) >. , <. ( dist ` ndx ) , ( dist ` U ) >. } ) ) )
37 16 36 eqtr4id 
 |-  ( ph -> G = ( Scalar ` U ) )