Results 41 to 50 of about 407 (175)
Quarterly Journal of the Royal Meteorological Society, EarlyView.We investigate whether Central European heatwaves (HWs) forming under omega blocking differ from those enabled by subtropical ridges, in terms of both air‐mass origin and processes warming air parcels along their way. Using ERA5‐based backward trajectories and a Lagrangian temperature anomaly decomposition, we identify significant differences in the ...
Alexander Lemburg +3 more
wiley +1 more source
Geometry of the theta divisor of a compactified jacobian
Journal of the European Mathematical Society, 2009 The object of this paper is the theta divisor of the compactified jacobian of a nodal curve. We determine its irreducible components and give it a geometric interpretation. A characterization of hyperelliptic irreducible stable curves is appended as an application.
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The Gauss Map of a Genus Three Theta Divisor [PDF]
Transactions of the American Mathematical Society, 1992 Let \(C\) be a smooth complex curve of genus three. By Andreotti's proof of Torelli's theorem the curve \(C\) is determined by the Gauss map \(\gamma\) of the theta divisor \(\Theta\) associated to \(C\). The \((-1)\)-map on the Jacobian of \(C\) restricts to a \(\mathbb{Z}/2\mathbb{Z}\)-action on \(\Theta\) with respect to which \(\gamma\) is ...
McCrory, Clint +2 more
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Converting an Integer to a Decimal String in Under Two Nanoseconds
Software: Practice and Experience, EarlyView.ABSTRACT Objective Converting binary integers to variable‐length decimal strings is a fundamental operation in computing. Conventional fast approaches rely on recursive division and small lookup tables. The goal of this work is to develop a significantly faster method for this task.
Jaël Champagne Gareau, Daniel Lemire
wiley +1 more source
On the geometry of rank two vector bundles and two-theta divisors on a curve [PDF]
, 2003 This thesis aims at presenting results and remarks concerning the study of subvarieties of the projective space |2Ɵ| associated to a smooth projective curve C of genus at least 3 and its connections to the moduli space SU(_c)(2) of rank 2 semi-stable ...
Scataglini, Giovanna
core
The primitive cohomology of theta divisors [PDF]
, 2015 The primitive cohomology of the theta divisor of a principally polarized abelian variety of dimension $g$ is a Hodge structure of level $g-3$. The Hodge conjecture predicts that it is contained in the image, under the Abel-Jacobi map, of the cohomology ...
Jie Wang +3 more
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Teaching Statistics, EarlyView.Abstract Statistical hypothesis testing (SHT) is widely employed across numerous scientific disciplines, and a clear understanding of its underlying logic is essential for the broader scientific community. Here, drawing upon both epistemological and statistical perspectives, we aim to clarify—primarily for educational purposes—the logical relationship ...
Maria Cristina Amoretti +1 more
wiley +1 more source
Summands of theta divisors on Jacobians [PDF]
Compositio Mathematica, 2020 We show that the only summands of the theta divisor on Jacobians of curves and on intermediate Jacobians of cubic threefolds are the powers of the curve and the Fano surface of lines on the threefold. The proof only uses the decomposition theorem for perverse sheaves, some representation theory and the notion of characteristic cycles.
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Torsion points on theta divisors and semihomogeneous vector bundles
, 2021 We generalize to n-torsion a result of Kempf’s describing 2-torsion points lying on a theta divisor. This is accomplished by means of certain semihomogeneous vector bundles introduced and studied by Mukai and Oprea.
Pareschi Giuseppe
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Theta divisors of stable vector bundles may be nonreduced [PDF]
, 2014 A generic strictly semistable bundle of degree zero over a curve X has a reducible theta divisor, given by the sum of the theta divisors of the stable summands of the associated graded bundle.
Pauly, Christian, Hitching, George Harry
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