Is every local diffeomorphism from $U subseteq mathbb{R}^k$ to a $V subseteq M$ equivalent to a chart?Smooth...

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Is every local diffeomorphism from $U subseteq mathbb{R}^k$ to a $V subseteq M$ equivalent to a chart?


Smooth chart in what sense?What does “smoothly compatible” mean?Non-smooth internal function of composition which happens to be smoothIs every local diffeomorphic chart a local isometry?Smooth structure of embedded submanifoldssmooth submersions and maps with local sectionsBijective local diffeomorphism is a diffeomorphismSmooth map between vector bundles from local coordinatesEquivalence of the two definitions of smooth mapsChoosing Coordinate Charts — Smooth Functions on Manifolds













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If we have a local diffeomorphism $F: U rightarrow V$, with $U subseteq mathbb{R}^k$ and $V subseteq M$, and $mathbb{R}^k$ with the usual smooth structure, then is it always the case that we can consider $F^{-1}$ as a chart map for $M$?



It seems so because as a diffeomorphism, $F circ psi^{-1}$ implies compatibility with the charts of $M$.










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    0












    $begingroup$


    If we have a local diffeomorphism $F: U rightarrow V$, with $U subseteq mathbb{R}^k$ and $V subseteq M$, and $mathbb{R}^k$ with the usual smooth structure, then is it always the case that we can consider $F^{-1}$ as a chart map for $M$?



    It seems so because as a diffeomorphism, $F circ psi^{-1}$ implies compatibility with the charts of $M$.










    share|cite|improve this question











    $endgroup$















      0












      0








      0





      $begingroup$


      If we have a local diffeomorphism $F: U rightarrow V$, with $U subseteq mathbb{R}^k$ and $V subseteq M$, and $mathbb{R}^k$ with the usual smooth structure, then is it always the case that we can consider $F^{-1}$ as a chart map for $M$?



      It seems so because as a diffeomorphism, $F circ psi^{-1}$ implies compatibility with the charts of $M$.










      share|cite|improve this question











      $endgroup$




      If we have a local diffeomorphism $F: U rightarrow V$, with $U subseteq mathbb{R}^k$ and $V subseteq M$, and $mathbb{R}^k$ with the usual smooth structure, then is it always the case that we can consider $F^{-1}$ as a chart map for $M$?



      It seems so because as a diffeomorphism, $F circ psi^{-1}$ implies compatibility with the charts of $M$.







      differential-geometry smooth-manifolds






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      share|cite|improve this question













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      edited 2 days ago







      Jeff

















      asked 2 days ago









      JeffJeff

      13318




      13318






















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          $begingroup$

          Given any point $p$ in $F(U) subseteq V$ and $x in F^{-1}({p})$ there exists a neighbourhood $W subseteq U $ around $x$ such that $F(W)$ is open with respect to $U$ and $F vert_W: W rightarrow F(W)$ is a diffeomorphism (by definition of local diffeomorphism).



          Now we have a problem, since there is no guarantee that $W$ is open with respect to $mathbb{R}^k$. Regardless, if $(X,phi)$ is a chart for $U$ (seeing $U$ as an embedded submanifold of $mathbb{R}^k$) with $x in X$, then $(F(W cap X),
          phi circ Fvert_{W cap X}^{-1})$
          is a chart for $M$.



          In the special case where $U$ is open, $W$ is also open in $mathbb{R}^k$, so that $(F(W), Fvert_W^{-1})$ is a chart for $M$.






          share|cite|improve this answer











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            $begingroup$

            Given any point $p$ in $F(U) subseteq V$ and $x in F^{-1}({p})$ there exists a neighbourhood $W subseteq U $ around $x$ such that $F(W)$ is open with respect to $U$ and $F vert_W: W rightarrow F(W)$ is a diffeomorphism (by definition of local diffeomorphism).



            Now we have a problem, since there is no guarantee that $W$ is open with respect to $mathbb{R}^k$. Regardless, if $(X,phi)$ is a chart for $U$ (seeing $U$ as an embedded submanifold of $mathbb{R}^k$) with $x in X$, then $(F(W cap X),
            phi circ Fvert_{W cap X}^{-1})$
            is a chart for $M$.



            In the special case where $U$ is open, $W$ is also open in $mathbb{R}^k$, so that $(F(W), Fvert_W^{-1})$ is a chart for $M$.






            share|cite|improve this answer











            $endgroup$


















              2












              $begingroup$

              Given any point $p$ in $F(U) subseteq V$ and $x in F^{-1}({p})$ there exists a neighbourhood $W subseteq U $ around $x$ such that $F(W)$ is open with respect to $U$ and $F vert_W: W rightarrow F(W)$ is a diffeomorphism (by definition of local diffeomorphism).



              Now we have a problem, since there is no guarantee that $W$ is open with respect to $mathbb{R}^k$. Regardless, if $(X,phi)$ is a chart for $U$ (seeing $U$ as an embedded submanifold of $mathbb{R}^k$) with $x in X$, then $(F(W cap X),
              phi circ Fvert_{W cap X}^{-1})$
              is a chart for $M$.



              In the special case where $U$ is open, $W$ is also open in $mathbb{R}^k$, so that $(F(W), Fvert_W^{-1})$ is a chart for $M$.






              share|cite|improve this answer











              $endgroup$
















                2












                2








                2





                $begingroup$

                Given any point $p$ in $F(U) subseteq V$ and $x in F^{-1}({p})$ there exists a neighbourhood $W subseteq U $ around $x$ such that $F(W)$ is open with respect to $U$ and $F vert_W: W rightarrow F(W)$ is a diffeomorphism (by definition of local diffeomorphism).



                Now we have a problem, since there is no guarantee that $W$ is open with respect to $mathbb{R}^k$. Regardless, if $(X,phi)$ is a chart for $U$ (seeing $U$ as an embedded submanifold of $mathbb{R}^k$) with $x in X$, then $(F(W cap X),
                phi circ Fvert_{W cap X}^{-1})$
                is a chart for $M$.



                In the special case where $U$ is open, $W$ is also open in $mathbb{R}^k$, so that $(F(W), Fvert_W^{-1})$ is a chart for $M$.






                share|cite|improve this answer











                $endgroup$



                Given any point $p$ in $F(U) subseteq V$ and $x in F^{-1}({p})$ there exists a neighbourhood $W subseteq U $ around $x$ such that $F(W)$ is open with respect to $U$ and $F vert_W: W rightarrow F(W)$ is a diffeomorphism (by definition of local diffeomorphism).



                Now we have a problem, since there is no guarantee that $W$ is open with respect to $mathbb{R}^k$. Regardless, if $(X,phi)$ is a chart for $U$ (seeing $U$ as an embedded submanifold of $mathbb{R}^k$) with $x in X$, then $(F(W cap X),
                phi circ Fvert_{W cap X}^{-1})$
                is a chart for $M$.



                In the special case where $U$ is open, $W$ is also open in $mathbb{R}^k$, so that $(F(W), Fvert_W^{-1})$ is a chart for $M$.







                share|cite|improve this answer














                share|cite|improve this answer



                share|cite|improve this answer








                edited 2 days ago

























                answered 2 days ago









                setnosetsetnoset

                36518




                36518






























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