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Francois Ziegler
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Smoothing of a KahlerKähler orbifold metric on a complex surface

Let $S$ be a smooth complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizerstabilizer $\mathbb Z_m$ along $D$. Suppose now we have a KahlerKähler orbifold metric $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth KahlerKähler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the KahlerKähler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

Smoothing of a Kahler orbifold metric on a complex surface

Let $S$ be a smooth complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

Smoothing of a Kähler orbifold metric on a complex surface

Let $S$ be a smooth complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stabilizer $\mathbb Z_m$ along $D$. Suppose now we have a Kähler orbifold metric $\omega$ on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kähler metric $\omega_{\varepsilon}$ on $S$ such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kähler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

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aglearner
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Let $S$ be a smooth complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

Let $S$ be a complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

Let $S$ be a smooth complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

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aglearner
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Let $S$ be a complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in the same cohomology class as $\omega$ and such such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

Let $S$ be a complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in the same cohomology class as $\omega$ and such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

Let $S$ be a complex projective surface and $D\subset S$ be a smooth complex curve. Fix an integer $m>1$ and consider $(S,D,m)$ as an orbifold with orbi-locus $D$ with stablizer $\mathbb Z_m$ along $D$. Suppose now we have a Kahler orbifold $\omega$ metric on $(S,D,m)$ (with metric singularity along $D$). I would like to find a short proof or a reference for the following statement:

Statement. For arbitrary small $\varepsilon$-neighborhood $U_{\varepsilon}$ of $D$ in $S$ there is a smooth Kahler metric $\omega_{\varepsilon}$ on $S$ in such that $\omega_{\varepsilon}$ coincides with $\omega$ in $S\setminus U_{\varepsilon}$.

PS. I will be happy, if the statement is proven in the following situation: $S$ is a ruled surface and $D$ is embedded in $S$ as a holomorphic section (i.e. it intersects all $\mathbb CP^1$-fibers in one point). Moreover if necessary one may assume that the Kahler orbi-metric is invariant under a holomorphic $S^1$-action on $S$ fixing $D$ pointwise.

PPS. I also removed the condition on $\omega_{\varepsilon}$ to be in the same cohomology class as $\omega$ (since it turned out to be irrelevant for me).

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aglearner
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aglearner
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aglearner
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aglearner
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aglearner
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