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arXiv · 1309.7356

Invariants and rigidity of projective hypersurfaces

Gabriel Sticlaru
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Abstract

This paper continues our researches \cite{DS1, DS2, DS3} by computing some invariants based on Hilbert-Poincaré series associated to Milnor algebras. Our computations are for some of the classical surfaces and 3-folds with different configurations of isolated singularities. As a by-product of a recent result of E. Sernesi, we give examples of classical hypersurfaces which are (or are not) projectively rigid. We also include a Singular program to compute the invariants and to decide if a singular projective hypersurface is nodal and projectively rigid.

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Gabriel Sticlaru. 2013-09-27. Invariants and rigidity of projective hypersurfaces. https://arxiv.org/abs/1309.7356

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