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Is the region bounded by a point the entire plane?


Triple integral over a region bounded by surfaces.Are continuous functions with compact support bounded?Find volume of tetrahedron bounded by $x=0$,$y=0$,$z=0$ and the plane $z=1+x-y$.Distance between plane and point.Calculating the volume bounded between a paraboloid and a planeFind the area of the following region D on $xy$-planeHow to determine whether domain is an open or a closed region (or both open and closed)?Finding surface integral of a vector field over quarter of a cylinderFind volume where the region is bounded by $z=1-4(x^2+y^2)$ and the xy plane?Integrating over region bounded by two ellipses













0












$begingroup$


Is the region bounded by a point the entire plane? Recently came across this issue in a question - for which the answer implied the affirmative. Can someone elaborate on what the meaning of bounded is? Is there a technical definition?










share|cite|improve this question









$endgroup$











  • $begingroup$
    First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 6:50










  • $begingroup$
    @AniruddhaDeshmukh You going to need to elaborate...
    $endgroup$
    – helios321
    Mar 14 at 8:54










  • $begingroup$
    The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:42










  • $begingroup$
    There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:43










  • $begingroup$
    @AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
    $endgroup$
    – helios321
    Mar 14 at 12:44















0












$begingroup$


Is the region bounded by a point the entire plane? Recently came across this issue in a question - for which the answer implied the affirmative. Can someone elaborate on what the meaning of bounded is? Is there a technical definition?










share|cite|improve this question









$endgroup$











  • $begingroup$
    First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 6:50










  • $begingroup$
    @AniruddhaDeshmukh You going to need to elaborate...
    $endgroup$
    – helios321
    Mar 14 at 8:54










  • $begingroup$
    The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:42










  • $begingroup$
    There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:43










  • $begingroup$
    @AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
    $endgroup$
    – helios321
    Mar 14 at 12:44













0












0








0





$begingroup$


Is the region bounded by a point the entire plane? Recently came across this issue in a question - for which the answer implied the affirmative. Can someone elaborate on what the meaning of bounded is? Is there a technical definition?










share|cite|improve this question









$endgroup$




Is the region bounded by a point the entire plane? Recently came across this issue in a question - for which the answer implied the affirmative. Can someone elaborate on what the meaning of bounded is? Is there a technical definition?







real-analysis multivariable-calculus






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Mar 14 at 6:28









helios321helios321

56149




56149











  • $begingroup$
    First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 6:50










  • $begingroup$
    @AniruddhaDeshmukh You going to need to elaborate...
    $endgroup$
    – helios321
    Mar 14 at 8:54










  • $begingroup$
    The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:42










  • $begingroup$
    There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:43










  • $begingroup$
    @AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
    $endgroup$
    – helios321
    Mar 14 at 12:44
















  • $begingroup$
    First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 6:50










  • $begingroup$
    @AniruddhaDeshmukh You going to need to elaborate...
    $endgroup$
    – helios321
    Mar 14 at 8:54










  • $begingroup$
    The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:42










  • $begingroup$
    There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
    $endgroup$
    – Aniruddha Deshmukh
    Mar 14 at 9:43










  • $begingroup$
    @AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
    $endgroup$
    – helios321
    Mar 14 at 12:44















$begingroup$
First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 6:50




$begingroup$
First, to even think of "boundedness", we need a way to find the "distance" between any two points? Do we have it?
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 6:50












$begingroup$
@AniruddhaDeshmukh You going to need to elaborate...
$endgroup$
– helios321
Mar 14 at 8:54




$begingroup$
@AniruddhaDeshmukh You going to need to elaborate...
$endgroup$
– helios321
Mar 14 at 8:54












$begingroup$
The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 9:42




$begingroup$
The whole notion of boundedness comes from the intuition that a "bounded" set should be one such that the maximum distance between any two points should be finite (or less than some finite quantity). To establish this, we need a way to measure distance between points. Do we have it in this case?
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 9:42












$begingroup$
There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 9:43




$begingroup$
There is no way we can have the notion of "boundedness" in terms of "bounded by a point". If you want to have one, you have to define it yourself and see to it that other intuitions do not fail at the same time.
$endgroup$
– Aniruddha Deshmukh
Mar 14 at 9:43












$begingroup$
@AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
$endgroup$
– helios321
Mar 14 at 12:44




$begingroup$
@AniruddhaDeshmukh Ok then so theres no real "official"position on what to do with a point?
$endgroup$
– helios321
Mar 14 at 12:44










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