ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  shftdm Unicode version

Theorem shftdm 10779
Description: Domain of a relation shifted by  A. The set on the right is more commonly notated as  ( dom  F  +  A ) (meaning add  A to every element of  dom  F). (Contributed by Mario Carneiro, 3-Nov-2013.)
Hypothesis
Ref Expression
shftfval.1  |-  F  e. 
_V
Assertion
Ref Expression
shftdm  |-  ( A  e.  CC  ->  dom  ( F  shift  A )  =  { x  e.  CC  |  ( x  -  A )  e. 
dom  F } )
Distinct variable groups:    x, A    x, F

Proof of Theorem shftdm
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 shftfval.1 . . . 4  |-  F  e. 
_V
21shftfval 10778 . . 3  |-  ( A  e.  CC  ->  ( F  shift  A )  =  { <. x ,  y
>.  |  ( x  e.  CC  /\  ( x  -  A ) F y ) } )
32dmeqd 4811 . 2  |-  ( A  e.  CC  ->  dom  ( F  shift  A )  =  dom  { <. x ,  y >.  |  ( x  e.  CC  /\  ( x  -  A
) F y ) } )
4 19.42v 1899 . . . . 5  |-  ( E. y ( x  e.  CC  /\  ( x  -  A ) F y )  <->  ( x  e.  CC  /\  E. y
( x  -  A
) F y ) )
5 simpr 109 . . . . . . . 8  |-  ( ( A  e.  CC  /\  x  e.  CC )  ->  x  e.  CC )
6 simpl 108 . . . . . . . 8  |-  ( ( A  e.  CC  /\  x  e.  CC )  ->  A  e.  CC )
75, 6subcld 8223 . . . . . . 7  |-  ( ( A  e.  CC  /\  x  e.  CC )  ->  ( x  -  A
)  e.  CC )
8 eldmg 4804 . . . . . . 7  |-  ( ( x  -  A )  e.  CC  ->  (
( x  -  A
)  e.  dom  F  <->  E. y ( x  -  A ) F y ) )
97, 8syl 14 . . . . . 6  |-  ( ( A  e.  CC  /\  x  e.  CC )  ->  ( ( x  -  A )  e.  dom  F  <->  E. y ( x  -  A ) F y ) )
109pm5.32da 449 . . . . 5  |-  ( A  e.  CC  ->  (
( x  e.  CC  /\  ( x  -  A
)  e.  dom  F
)  <->  ( x  e.  CC  /\  E. y
( x  -  A
) F y ) ) )
114, 10bitr4id 198 . . . 4  |-  ( A  e.  CC  ->  ( E. y ( x  e.  CC  /\  ( x  -  A ) F y )  <->  ( x  e.  CC  /\  ( x  -  A )  e. 
dom  F ) ) )
1211abbidv 2288 . . 3  |-  ( A  e.  CC  ->  { x  |  E. y ( x  e.  CC  /\  (
x  -  A ) F y ) }  =  { x  |  ( x  e.  CC  /\  ( x  -  A
)  e.  dom  F
) } )
13 dmopab 4820 . . 3  |-  dom  { <. x ,  y >.  |  ( x  e.  CC  /\  ( x  -  A ) F y ) }  =  { x  |  E. y ( x  e.  CC  /\  ( x  -  A ) F y ) }
14 df-rab 2457 . . 3  |-  { x  e.  CC  |  ( x  -  A )  e. 
dom  F }  =  { x  |  (
x  e.  CC  /\  ( x  -  A
)  e.  dom  F
) }
1512, 13, 143eqtr4g 2228 . 2  |-  ( A  e.  CC  ->  dom  {
<. x ,  y >.  |  ( x  e.  CC  /\  ( x  -  A ) F y ) }  =  { x  e.  CC  |  ( x  -  A )  e.  dom  F } )
163, 15eqtrd 2203 1  |-  ( A  e.  CC  ->  dom  ( F  shift  A )  =  { x  e.  CC  |  ( x  -  A )  e. 
dom  F } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    <-> wb 104    = wceq 1348   E.wex 1485    e. wcel 2141   {cab 2156   {crab 2452   _Vcvv 2730   class class class wbr 3987   {copab 4047   dom cdm 4609  (class class class)co 5851   CCcc 7765    - cmin 8083    shift cshi 10771
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 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-coll 4102  ax-sep 4105  ax-pow 4158  ax-pr 4192  ax-un 4416  ax-setind 4519  ax-resscn 7859  ax-1cn 7860  ax-icn 7862  ax-addcl 7863  ax-addrcl 7864  ax-mulcl 7865  ax-addcom 7867  ax-addass 7869  ax-distr 7871  ax-i2m1 7872  ax-0id 7875  ax-rnegex 7876  ax-cnre 7878
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-csb 3050  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3566  df-sn 3587  df-pr 3588  df-op 3590  df-uni 3795  df-iun 3873  df-br 3988  df-opab 4049  df-mpt 4050  df-id 4276  df-xp 4615  df-rel 4616  df-cnv 4617  df-co 4618  df-dm 4619  df-rn 4620  df-res 4621  df-ima 4622  df-iota 5158  df-fun 5198  df-fn 5199  df-f 5200  df-f1 5201  df-fo 5202  df-f1o 5203  df-fv 5204  df-riota 5807  df-ov 5854  df-oprab 5855  df-mpo 5856  df-sub 8085  df-shft 10772
This theorem is referenced by:  shftfn  10781
  Copyright terms: Public domain W3C validator