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

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149870This 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, TEXAlgebraic GeometryThe Deformation Space of Calabi-Yau n-folds with canonical singularities can be obstructedtext