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2000, Journal für die reine und angewandte Mathematik (Crelles Journal)
arXiv: Algebraic Geometry
Globally generated vector bundles with $c_1 = 5$ on $\mathbb{P}^3$2018 •
We provide a classification of globally generated vector bundles with $c_1 = 5$ on the projective 3-space. The classification is complete (except for one case) but not as detailed as the corresponding classification in the case $c_1 = 4$ from our paper [Memoirs A.M.S., Vol. 253, No. 1209 (2018), also arXiv:1305.3464]. We determine, at least, the pairs of integers $(a , b)$ for which there exist globally generated vector bundles on the projective 3-space with Chern classes $c_1 = 5$, $c_2 = a$, $c_3 = b$ (except for the case $(12 , 0)$ and the complementary case $(13 , 5)$ which remain undecided), we describe the Horrocks monads of these vector bundles and we organize them into several families with irreducible bases. We use some of the results from our paper [arXiv:1502.05553] (for which we give, however, a direct self-contained proof in one of the appendices of the present paper) to reduce the problem to the classification of stable rank 3 vector bundles $F$ with $c_1(F) = -1$, $2 ...
We study the moduli space $\fM^s(6;3,6,4)$ of simple rank 6 vector bundles $\E$ on $\PP^3$ with Chern polynomial $1+3t+6t^2+4t^3$ and properties of these bundles, especially we prove some partial results concerning their stability. We first recall how these bundles are related to the construction of sextic nodal surfaces in $\PP^3$ having an even set of 56 nodes (cf. \cite{CaTo}). We prove that there is an open set, corresponding to the simple bundles with minimal cohomology, which is irreducible of dimension 19 and bimeromorphic to an open set $\fA^0$ of the G.I.T. quotient space of the projective space $\fB:=\{B\in \PP(U^\vee\otimes W\otimes V^\vee)\}$ of triple tensors of type $(3,3,4)$ by the natural action of $SL(W)\times SL(U)$. We give several constructions for these bundles, which relate them to cubic surfaces in 3-space $\PP^3$ and to cubic surfaces in the dual space $(\PP^3)^{\vee}$. One of these constructions, suggested by Igor Dolgachev, generalizes to other types of ten...
Annali Dell'universita' Di Ferrara
On the moduli space of ’t Hooft bundles2001 •
Sunto Si descrive lo spazio dei moduliM 1 (c 2) dei fibrati vettoriali di 't Hooft suP 3, cioè dei fibrati istantoni che ammettono una sezione lineare. Si dimostra che tale spazio è una varietà razionale il cui luogo singolare è costituito dai fibrati di 't Hooft speciali studiati in [HN]. Si trova, inoltre, una desingolarizzazione diM 1 (c 2) data
2005 •
By the results of the author and Chiantini in [3], on a general quintic threefold X⊂P 4 the minimum integer p for which there exists a positive dimensional family of irreducible rank p vector bundles on X without intermediate cohomology is at least three. In this paper we show that p≤4, by constructing series of positive dimensional families of rank 4 vector bundles on X without intermediate cohomology. The general member of such family is an indecomposable bundle from the extension class Ext 1 (E, F), for a suitable choice of the rank 2 ACM bundles E and F on X. The existence of such bundles of rank p=3 remains under question.
Cornell University - arXiv
Globally generated vector bundles with $c_1 = 5$ on $\mathbb{P}^n$, $n \geq 4$2020 •
Academia Letters
Time of Onset Necrotizing Enterocolitis: When We Should be Aware2022 •
The official Saudi Press Agency
International Conference on Islamic Numismatics in Riyadh - 18 to 20, at the King Abdullah Financial District (KAFD)2023 •
2019 •
Atena Editora - Engenharia elétrica: conceitos fundamentais e aplicações práticas
CRITICAL ANALYSIS OF THEORIES ON THE ORIGINS OF GEOMAGNETISM2023 •
Historica. Revue pro historii a příbuzné vědy. Roč. 15, č. 1.
Přátelství a dary v korespondenci Winfrieda / Bonifáce [Friendship and Gift-giving in the Correspondence of Winfried / Boniface]2024 •
International Journal of West Asian Studies
COMPROMISE FOR THE COMMUNITY: THE EARLY KŪFAN SOFT SHĪʿĪ TRADITIONISTS AND THE FORMATION OF THE FOUR-CALIPHS THESIS (AL-KHULAFĀʾ AL-RĀSHIDŪN2020 •
Applied Biochemistry and Biotechnology
Destressing Yeast for Higher Biofuel Yields: Can Excess Chaotropicity Be Mitigated?2020 •
동인천출장안마『카아톡NW30 』ロ「SOD30.NET」동인천출장샵ロ동인천출장아가씨ロ동인천출장샵ロ동인천출장마사지ロ동인천모텔출장ロ동인천출장샵추천
동인천출장안마『카아톡NW30 』ロ「SOD30.NET」동인천출장샵ロ동인천출장아가씨ロ동인천출장샵ロ동인천출장마사지ロ동인천모텔출장ロ동인천출장샵추천2020 •
2018 •
The Semantic Web – ISWC 2021
Towards Semantic Interoperability inHistorical Research: Documenting Research Data and Knowledge withSynthesis2021 •
International Journal of Plant Sciences
Fourier Transform Infrared Spectroscopy Studies of Cretaceous Gymnosperms from the Santa Cruz Province, Patagonia, Argentina2021 •
Visual Reflections across the Mediterranean Sea: A PIMo Collection of Essays, eds Natalie Fritz and Paola von Wyss-Giacosa
Iannuzzi, Early Modern Luxury Timekeeping2023 •
(Re)Significando o ensino e a aprendizagem de línguas estrangeiras / adicionais: aproximações teórico-metodológicas
Recursos digitais: possibilidades para o desenvolvimento de habilidades escritas e orais no ensino de línguas2024 •