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Theorem isoresbr 5831
Description: A consequence of isomorphism on two relations for a function's restriction. (Contributed by Jim Kingdon, 11-Jan-2019.)
Assertion
Ref Expression
isoresbr  |-  ( ( F  |`  A )  Isom  R ,  S  ( A ,  ( F
" A ) )  ->  A. x  e.  A  A. y  e.  A  ( x R y  ->  ( F `  x ) S ( F `  y ) ) )
Distinct variable groups:    x, y, A   
x, F, y    x, R, y    x, S, y

Proof of Theorem isoresbr
StepHypRef Expression
1 isorel 5830 . . . 4  |-  ( ( ( F  |`  A ) 
Isom  R ,  S  ( A ,  ( F
" A ) )  /\  ( x  e.  A  /\  y  e.  A ) )  -> 
( x R y  <-> 
( ( F  |`  A ) `  x
) S ( ( F  |`  A ) `  y ) ) )
2 fvres 5558 . . . . . 6  |-  ( x  e.  A  ->  (
( F  |`  A ) `
 x )  =  ( F `  x
) )
3 fvres 5558 . . . . . 6  |-  ( y  e.  A  ->  (
( F  |`  A ) `
 y )  =  ( F `  y
) )
42, 3breqan12d 4034 . . . . 5  |-  ( ( x  e.  A  /\  y  e.  A )  ->  ( ( ( F  |`  A ) `  x
) S ( ( F  |`  A ) `  y )  <->  ( F `  x ) S ( F `  y ) ) )
54adantl 277 . . . 4  |-  ( ( ( F  |`  A ) 
Isom  R ,  S  ( A ,  ( F
" A ) )  /\  ( x  e.  A  /\  y  e.  A ) )  -> 
( ( ( F  |`  A ) `  x
) S ( ( F  |`  A ) `  y )  <->  ( F `  x ) S ( F `  y ) ) )
61, 5bitrd 188 . . 3  |-  ( ( ( F  |`  A ) 
Isom  R ,  S  ( A ,  ( F
" A ) )  /\  ( x  e.  A  /\  y  e.  A ) )  -> 
( x R y  <-> 
( F `  x
) S ( F `
 y ) ) )
76biimpd 144 . 2  |-  ( ( ( F  |`  A ) 
Isom  R ,  S  ( A ,  ( F
" A ) )  /\  ( x  e.  A  /\  y  e.  A ) )  -> 
( x R y  ->  ( F `  x ) S ( F `  y ) ) )
87ralrimivva 2572 1  |-  ( ( F  |`  A )  Isom  R ,  S  ( A ,  ( F
" A ) )  ->  A. x  e.  A  A. y  e.  A  ( x R y  ->  ( F `  x ) S ( F `  y ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    e. wcel 2160   A.wral 2468   class class class wbr 4018    |` cres 4646   "cima 4647   ` cfv 5235    Isom wiso 5236
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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-14 2163  ax-ext 2171  ax-sep 4136  ax-pow 4192  ax-pr 4227
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-clab 2176  df-cleq 2182  df-clel 2185  df-nfc 2321  df-ral 2473  df-rex 2474  df-v 2754  df-un 3148  df-in 3150  df-ss 3157  df-pw 3592  df-sn 3613  df-pr 3614  df-op 3616  df-uni 3825  df-br 4019  df-opab 4080  df-xp 4650  df-res 4656  df-iota 5196  df-fv 5243  df-isom 5244
This theorem is referenced by: (None)
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