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I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective $\mathbb{Q}$-Cartier divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

My expectation, is that such deformation theory is determined by the corresponding deformation of the normal bundle of $D$ on $X$.

I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

My expectation, is that such deformation theory is determined by the corresponding deformation of the normal bundle of $D$ on $X$.

I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective $\mathbb{Q}$-Cartier divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

My expectation, is that such deformation theory is determined by the corresponding deformation of the normal bundle of $D$ on $X$.

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user73577
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I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

My expectation, is that such deformation theory is determined by the corresponding deformation of the normal bundle of $D$ on $X$.

I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.

My expectation, is that such deformation theory is determined by the corresponding deformation of the normal bundle of $D$ on $X$.

Source Link
user73577
  • 405
  • 3
  • 5

Deformation of pairs (X,D) isotrovial along D

I have a log pair $(X,D)$ which is purely log terminal and $D$ is a projective divisor ($X$ may not be projective). Moreover, $D$ is a variety of Fano type. Is there a space of finite type parametrizing first order deformation theory of the pair $(X,D)$ which are isotrivial along $D$? i.e. the induced flat deformation on $D$ is isotrivial.