Integral in termsof supremum











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I am facing difficulty to prove the following fact:
If $w$ is a locally integrable positive function in $Omega$, then
$$
sup_{B(x,R)}lvert vrvert=lim_{ptoinfty}lVert vrVert_{L^p(B(x,R),w))},
$$

where $B(x,R)subset Omega$ and $Omega$ is a bounded domain, and $lVert vrVert_{L^p(B(x,R),w))}$ is defined to be
$$
left(int_{B(x,R)}lvert vrvert^pw(x),dxright)^{1/p}.
$$

For $w=1$, I know this is true. But for non-constant $w$, even for $A_p$ weights does the same hold true? I have sen this fact is applied in the paper attached in the link: see page 15 or 16.
http://imar.ro/journals/Mathematical_Reports/Pdfs/2017/3/3.pdf










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  • 1




    If $w=0$ this cannot be true.
    – daw
    Nov 13 at 7:48






  • 1




    For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
    – user10354138
    Nov 13 at 8:53










  • Thank you very much.
    – Mathlover
    Nov 13 at 12:31










  • Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
    – Mathlover
    Nov 13 at 13:07















up vote
1
down vote

favorite
1












I am facing difficulty to prove the following fact:
If $w$ is a locally integrable positive function in $Omega$, then
$$
sup_{B(x,R)}lvert vrvert=lim_{ptoinfty}lVert vrVert_{L^p(B(x,R),w))},
$$

where $B(x,R)subset Omega$ and $Omega$ is a bounded domain, and $lVert vrVert_{L^p(B(x,R),w))}$ is defined to be
$$
left(int_{B(x,R)}lvert vrvert^pw(x),dxright)^{1/p}.
$$

For $w=1$, I know this is true. But for non-constant $w$, even for $A_p$ weights does the same hold true? I have sen this fact is applied in the paper attached in the link: see page 15 or 16.
http://imar.ro/journals/Mathematical_Reports/Pdfs/2017/3/3.pdf










share|cite|improve this question




















  • 1




    If $w=0$ this cannot be true.
    – daw
    Nov 13 at 7:48






  • 1




    For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
    – user10354138
    Nov 13 at 8:53










  • Thank you very much.
    – Mathlover
    Nov 13 at 12:31










  • Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
    – Mathlover
    Nov 13 at 13:07













up vote
1
down vote

favorite
1









up vote
1
down vote

favorite
1






1





I am facing difficulty to prove the following fact:
If $w$ is a locally integrable positive function in $Omega$, then
$$
sup_{B(x,R)}lvert vrvert=lim_{ptoinfty}lVert vrVert_{L^p(B(x,R),w))},
$$

where $B(x,R)subset Omega$ and $Omega$ is a bounded domain, and $lVert vrVert_{L^p(B(x,R),w))}$ is defined to be
$$
left(int_{B(x,R)}lvert vrvert^pw(x),dxright)^{1/p}.
$$

For $w=1$, I know this is true. But for non-constant $w$, even for $A_p$ weights does the same hold true? I have sen this fact is applied in the paper attached in the link: see page 15 or 16.
http://imar.ro/journals/Mathematical_Reports/Pdfs/2017/3/3.pdf










share|cite|improve this question















I am facing difficulty to prove the following fact:
If $w$ is a locally integrable positive function in $Omega$, then
$$
sup_{B(x,R)}lvert vrvert=lim_{ptoinfty}lVert vrVert_{L^p(B(x,R),w))},
$$

where $B(x,R)subset Omega$ and $Omega$ is a bounded domain, and $lVert vrVert_{L^p(B(x,R),w))}$ is defined to be
$$
left(int_{B(x,R)}lvert vrvert^pw(x),dxright)^{1/p}.
$$

For $w=1$, I know this is true. But for non-constant $w$, even for $A_p$ weights does the same hold true? I have sen this fact is applied in the paper attached in the link: see page 15 or 16.
http://imar.ro/journals/Mathematical_Reports/Pdfs/2017/3/3.pdf







real-analysis functional-analysis pde sobolev-spaces






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share|cite|improve this question













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edited Nov 13 at 8:20









user10354138

6,294623




6,294623










asked Nov 13 at 6:52









Mathlover

1038




1038








  • 1




    If $w=0$ this cannot be true.
    – daw
    Nov 13 at 7:48






  • 1




    For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
    – user10354138
    Nov 13 at 8:53










  • Thank you very much.
    – Mathlover
    Nov 13 at 12:31










  • Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
    – Mathlover
    Nov 13 at 13:07














  • 1




    If $w=0$ this cannot be true.
    – daw
    Nov 13 at 7:48






  • 1




    For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
    – user10354138
    Nov 13 at 8:53










  • Thank you very much.
    – Mathlover
    Nov 13 at 12:31










  • Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
    – Mathlover
    Nov 13 at 13:07








1




1




If $w=0$ this cannot be true.
– daw
Nov 13 at 7:48




If $w=0$ this cannot be true.
– daw
Nov 13 at 7:48




1




1




For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
– user10354138
Nov 13 at 8:53




For $A_p$ weights $w$ of course $w$ is nonzero (a.e.), so the same proof works.
– user10354138
Nov 13 at 8:53












Thank you very much.
– Mathlover
Nov 13 at 12:31




Thank you very much.
– Mathlover
Nov 13 at 12:31












Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
– Mathlover
Nov 13 at 13:07




Can you kindly have a look at the foolwing question in the link : math.stackexchange.com/questions/2996709/…
– Mathlover
Nov 13 at 13:07















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