Local tubular neighborhood
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Let $MsubsetBbb R^n$ be a $C^1$ manifold. I need to prove that for any $xin M$, there exist $epsilon>0$ and a neighborhood $V$ of $x$ in $M$ such that the map $$phi:{(v,w)in N: vin V, |w|<epsilon}toBbb R^n, (v,w)mapsto v+w,$$
is a diffeomorphism between $N_{V,epsilon}$ and its image, where $N$ is the normal bundle of $M$.
Thanks in advance.
differential-geometry
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add a comment |
$begingroup$
Let $MsubsetBbb R^n$ be a $C^1$ manifold. I need to prove that for any $xin M$, there exist $epsilon>0$ and a neighborhood $V$ of $x$ in $M$ such that the map $$phi:{(v,w)in N: vin V, |w|<epsilon}toBbb R^n, (v,w)mapsto v+w,$$
is a diffeomorphism between $N_{V,epsilon}$ and its image, where $N$ is the normal bundle of $M$.
Thanks in advance.
differential-geometry
$endgroup$
add a comment |
$begingroup$
Let $MsubsetBbb R^n$ be a $C^1$ manifold. I need to prove that for any $xin M$, there exist $epsilon>0$ and a neighborhood $V$ of $x$ in $M$ such that the map $$phi:{(v,w)in N: vin V, |w|<epsilon}toBbb R^n, (v,w)mapsto v+w,$$
is a diffeomorphism between $N_{V,epsilon}$ and its image, where $N$ is the normal bundle of $M$.
Thanks in advance.
differential-geometry
$endgroup$
Let $MsubsetBbb R^n$ be a $C^1$ manifold. I need to prove that for any $xin M$, there exist $epsilon>0$ and a neighborhood $V$ of $x$ in $M$ such that the map $$phi:{(v,w)in N: vin V, |w|<epsilon}toBbb R^n, (v,w)mapsto v+w,$$
is a diffeomorphism between $N_{V,epsilon}$ and its image, where $N$ is the normal bundle of $M$.
Thanks in advance.
differential-geometry
differential-geometry
asked Jan 17 at 4:18
DinoDino
1026
1026
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1 Answer
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$begingroup$
HINT: Compute $Dphi_{(x,0)}colon T_{(x,0)}N to Bbb R^n$. Note that $T_{(x,0)}N cong T_xMoplus N_xM$.
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1 Answer
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1 Answer
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active
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$begingroup$
HINT: Compute $Dphi_{(x,0)}colon T_{(x,0)}N to Bbb R^n$. Note that $T_{(x,0)}N cong T_xMoplus N_xM$.
$endgroup$
add a comment |
$begingroup$
HINT: Compute $Dphi_{(x,0)}colon T_{(x,0)}N to Bbb R^n$. Note that $T_{(x,0)}N cong T_xMoplus N_xM$.
$endgroup$
add a comment |
$begingroup$
HINT: Compute $Dphi_{(x,0)}colon T_{(x,0)}N to Bbb R^n$. Note that $T_{(x,0)}N cong T_xMoplus N_xM$.
$endgroup$
HINT: Compute $Dphi_{(x,0)}colon T_{(x,0)}N to Bbb R^n$. Note that $T_{(x,0)}N cong T_xMoplus N_xM$.
answered Jan 17 at 7:13
Ted ShifrinTed Shifrin
63.9k44591
63.9k44591
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