Difference between a parametrized surface and manifold












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What is the difference between a parametrized surface and manifold?



Is it true that if $M subset mathbb R^n$ is an $n$-dimensional parametrized surface it is also a (parametrized?) manifold? I am stuck with understanding the concept of a manifold. In which cases would a parametrized surface not be parametrized manifold or vice versa?










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  • 1




    $begingroup$
    Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
    $endgroup$
    – xbh
    Jan 20 at 9:49










  • $begingroup$
    So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
    $endgroup$
    – Tesla
    Jan 20 at 13:34










  • $begingroup$
    As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
    $endgroup$
    – xbh
    Jan 20 at 13:39
















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$begingroup$


What is the difference between a parametrized surface and manifold?



Is it true that if $M subset mathbb R^n$ is an $n$-dimensional parametrized surface it is also a (parametrized?) manifold? I am stuck with understanding the concept of a manifold. In which cases would a parametrized surface not be parametrized manifold or vice versa?










share|cite|improve this question









$endgroup$








  • 1




    $begingroup$
    Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
    $endgroup$
    – xbh
    Jan 20 at 9:49










  • $begingroup$
    So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
    $endgroup$
    – Tesla
    Jan 20 at 13:34










  • $begingroup$
    As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
    $endgroup$
    – xbh
    Jan 20 at 13:39














2












2








2





$begingroup$


What is the difference between a parametrized surface and manifold?



Is it true that if $M subset mathbb R^n$ is an $n$-dimensional parametrized surface it is also a (parametrized?) manifold? I am stuck with understanding the concept of a manifold. In which cases would a parametrized surface not be parametrized manifold or vice versa?










share|cite|improve this question









$endgroup$




What is the difference between a parametrized surface and manifold?



Is it true that if $M subset mathbb R^n$ is an $n$-dimensional parametrized surface it is also a (parametrized?) manifold? I am stuck with understanding the concept of a manifold. In which cases would a parametrized surface not be parametrized manifold or vice versa?







manifolds parametrization






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 20 at 9:42









TeslaTesla

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  • 1




    $begingroup$
    Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
    $endgroup$
    – xbh
    Jan 20 at 9:49










  • $begingroup$
    So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
    $endgroup$
    – Tesla
    Jan 20 at 13:34










  • $begingroup$
    As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
    $endgroup$
    – xbh
    Jan 20 at 13:39














  • 1




    $begingroup$
    Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
    $endgroup$
    – xbh
    Jan 20 at 9:49










  • $begingroup$
    So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
    $endgroup$
    – Tesla
    Jan 20 at 13:34










  • $begingroup$
    As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
    $endgroup$
    – xbh
    Jan 20 at 13:39








1




1




$begingroup$
Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
$endgroup$
– xbh
Jan 20 at 9:49




$begingroup$
Roughly speaking, manifolds are kind of like the union of several parametrized surfaces with certain restrictions when the surfaces overlap.
$endgroup$
– xbh
Jan 20 at 9:49












$begingroup$
So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
$endgroup$
– Tesla
Jan 20 at 13:34




$begingroup$
So if I have a family of $(S_i)_i$ of parametrized surfaces, then the manifold is $bigcup_i S_i $, but overlaps "count only once"?
$endgroup$
– Tesla
Jan 20 at 13:34












$begingroup$
As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
$endgroup$
– xbh
Jan 20 at 13:39




$begingroup$
As a set, yes. But generally we require the parametrizations be consistent on the overlapped part, so maybe not all family could become manifolds by union.
$endgroup$
– xbh
Jan 20 at 13:39










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