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Book ChapterDOI

Type de Scindage Généralisé Pour les Fibrés Stables

TLDR
In this article, the methode de demonstration raffine une idee de VAN DE VEN [17], who traitait le cas des fibres uniformes de rang 2, and it was deja reprise par GRAUERT-MULICH [6], BARTH [2], ELENCWAJG [3].
Abstract
Dans un recent travail, SPINDLER [15] a demontre le resultat suivant: Si E est un fibre semi-stable sur ℙn(ℂ), alors sa restriction a une droite generale est de la forme E|L ≅ OL(a1) ⊕...⊕ 0L(ar), avec ai ≥ ai+l ≥ ai−1 (La Suite a1 ≥ a2 ≥...≥ ar s’appelle type de scindage generique de E). La methode de demonstration raffine une idee de VAN DE VEN [17], qui traitait le cas des fibres uniformes de rang 2, idee deja reprise par GRAUERT-MULICH [6], BARTH [2], ELENCWAJG [3]. Elle consiste a montrer que si E est un fibre de type de scindage generique al ≥ a2 ≥ ... ≥ ar avec ai − a.i+1 ≥ 2 pour au moins un i, il existe un sous-faisceau F ⊂ E de type de scindage generique a1 ≥ ...≥ ai.

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Citations
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Book

The geometry of moduli spaces of sheaves

TL;DR: In this paper, the Grauert-Mullich Theorem is used to define a moduli space for sheaves on K-3 surfaces, and the restriction of sheaves to curves is discussed.
Posted Content

A view on contractions of higher dimensional varieties

TL;DR: In this paper, the authors discuss some recent results about extremal contractions of complex algebraic varieties and present a proper surjective map, φ: X\longrightarrow Z, of normal varieties with connected fibers such that $X$ has mild singularities (in particular $X is $Q$-Gorenstein) and the anticanonical divisor of
References
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Journal ArticleDOI

Vector Bundles Over an Elliptic Curve

TL;DR: In this article, the authors studied vector bundles over an algebraically closed field k and proved that the vector bundles are a direct sum of line-bundles over the field k. The results are valid in both characteristic 0 and p.
Journal ArticleDOI

On the cohomology groups of moduli spaces of vector bundles on curves

TL;DR: In this article, a synthetic rubber filler ring between an annular metal case and a flexible non-elastomeric polytetrafluoroethylene (PE) sealing element is made by molding the filler ring such that it chemically bonds to the metal case.