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Revista Matemática Complutense
Article . 2005 . Peer-reviewed
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Real Hypersurfaces with Many Simple Singularities

Real hypersurfaces with many simple singularities
Authors: Eric Westenberger;

Real Hypersurfaces with Many Simple Singularities

Abstract

This paper extends the results of \textit{E. Shustin} and \textit{E. Westenberger} [J. Lond. Math. Soc., II. Ser. 70, No. 3, 609--624 (2004; Zbl 1075.14034)] on the existence of algebraic hypersurfaces with prescribed simple singularities to the real case. The main result states that, given a collection of real simple singularities (with repetitions) of finitely many types satisfies the condition that the total Milnor number does not exceed \(d^n/n!+O(d^{n-1})\), there exists a real projective \((n-1)\)-dimensional hypersurface of degree \(d\), whose real singularity set coincides with the given collection, and, furthermore, the germ of the corresponding equisingular stratum in the space of hypersurfaces of degree \(d\) is smooth of expected dimension. The proof reduces to an application of the patchworking construction along the lines of the above cited article.

Keywords

real hypersurfaces, simple singularities, Hypersurfaces and algebraic geometry, Topology of real algebraic varieties, Singularities of surfaces or higher-dimensional varieties, patchworking construction

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
bronze