Quadratic Entry Locus Varieties

Abstract

We shall introduce and study quadratic entry locus varieties, a class of projective algebraic varieties whose extrinsic and intrinsic geometry is very rich. Let us recall that, for an irreducible non-degenerate variety X ⊂ P of dimension n ≥ 1, the secant defect of X , denoted by δ(X), is the difference between the expected dimension and the effective… (More)

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Cite this paper

@inproceedings{Russo2009QuadraticEL, title={Quadratic Entry Locus Varieties}, author={Francesco Russo}, year={2009} }