The Deformation Space of Calabi-Yau n-folds with canonical singularities can be obstructed

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This paper gives a simple example of a family of Calabi-Yaus of any dimension with canonical singularities of dimension one, whose Kuranishi space is singular. Thus the Bogomolov-Tian-Todorov unobstructedness theorem is not true for Calabi-Yaus with canonical singularities.
10 pages, TEX

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Algebraic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/149870

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/alg-geom/9402014
 http://arxiv.org/abs/alg-geom/9402014

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arXiv