Examples of four dimensional cusp singularities. (English) Zbl 1471.14077

Summary: We give some examples of four dimensional cusp singularities which are not of Hilbert modular type. We construct them, using quadratic cones and subgroups of reflection groups.


14J17 Singularities of surfaces or higher-dimensional varieties
32S05 Local complex singularities
14B05 Singularities in algebraic geometry
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