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We classify the solutions to an overdetermined elliptic problem in the plane in the finite connectivity case. This is achieved by establishing a one-to-one correspondence between the solutions to this problem and a certain type of minimal…

Differential Geometry · Mathematics 2013-03-25 Martin Traizet

These notes provide a description of the abelian categories that arise as categories of coherent sheaves on weighted projective lines. Two different approaches are presented: one is based on a list of axioms and the other yields a…

Representation Theory · Mathematics 2010-09-21 Xiao-Wu Chen , Henning Krause

We review the Atiyah-Singer Index theorem and some applications. Only basic knowledge of differential geometry and Lie groups is required.

Differential Geometry · Mathematics 2019-11-25 Konstantin Wernli

In 1957 Atiyah classified simple and indecomposable vector bundles on an elliptic curve. In this article we generalize his classification by describing the simple vector bundles on all reduced plane cubic curves. Our main result states that…

Algebraic Geometry · Mathematics 2010-03-26 Lesya Bodnarchuk , Yuriy Drozd , Gert-Martin Greuel

The group gradings on the symmetric composition algebras over arbitrary fields are classified. Applications of this result to gradings on the exceptional simple Lie algebras are considered too.

Rings and Algebras · Mathematics 2008-09-12 Alberto Elduque

We characterize subgroups of the mapping class group that stabilize a Teichmueller disk in terms of ellipses and strips that are immersed in the associated translation surface. In particular, we show that the space of immersed…

Geometric Topology · Mathematics 2010-12-24 S. Allen Broughton , Chris Judge

An abelian variety admits only a finite number of isomorphism classes of principal polarizations. The paper gives an interpretation of this number in terms of class numbers of definite Hermitian forms in the case of a product of elliptic…

Algebraic Geometry · Mathematics 2007-05-23 Herbert Lange

We enumerate plane complex algebraic curves of a given degree with one singularity of any given topological type. Our approach is to compute the homology classes of the corresponding equisingular strata in the parameter spaces of plane…

Algebraic Geometry · Mathematics 2007-05-23 Dmitry Kerner

The aim of this paper is the computation of the degree and genus of all incidence scrolls in Pn. For this, we fix the dimension of a linear space which have a base space of this fixed dimension. In this way, we can obtain all the incidence…

Algebraic Geometry · Mathematics 2007-05-23 Rosa Cid , Manuel Pedreira

We classify all prime thick subcategories in the derived category of coherent sheaves on elliptic curves, and determine the Serre invariant locus of Matsui spectrum of derived category of coherent sheaves on any smooth projective curves.

Algebraic Geometry · Mathematics 2022-08-03 Yuki Hirano , Genki Ouchi

We characterize all possible relative positions between a hyperboloid of one sheet and a sphere through the roots of a characteristic polynomial associated to these quadrics. The classification is also suitable for a hyperboloid and a…

Metric Geometry · Mathematics 2016-05-05 M. Brozos-Vázquez , M. J. Pereira-Sáez , M. J. Souto-Salorio , Ana D. Tarrío-Tobar

We give a full classification of Lie algebras of specific type in complexified Clifford algebras. These sixteen Lie algebras are direct sums of subspaces of quaternion types. We obtain isomorphisms between these Lie algebras and classical…

Mathematical Physics · Physics 2024-12-24 D. S. Shirokov

Enhancing and essentially generalizing previous results on a class of (1+1)-dimensional nonlinear wave and elliptic equations, we apply several new techniques to classify admissible point transformations within this class up to the…

Mathematical Physics · Physics 2020-07-07 Olena O. Vaneeva , Alexander Bihlo , Roman O. Popovych

In this paper, we show all k-linear abelian 1-Calabi-Yau categories over an algebraically closed field k are derived equivalent to either the category of coherent sheaves on an elliptic curve, or to the finite dimensional representations of…

Category Theory · Mathematics 2008-02-26 Adam-Christiaan van Roosmalen

This article provides a new perspective on the geometry of a projective line, which helps clarify and illuminate some classical results about projective plane. As part of the same train of ideas, the article also provides a proof of the…

General Mathematics · Mathematics 2022-05-11 Nicholas Phat Nguyen

We find the stable homotopy classification of elliptic operators on stratified manifolds. Namely, we establish an isomorphism of the set of elliptic operators modulo stable homotopy and the $K$-homology group of the singular manifold. As a…

K-Theory and Homology · Mathematics 2011-11-08 V. E. Nazaikinskii , A. Yu. Savin , B. Yu. Sternin

A classification theorem is given of projective threefolds that are covered by a two-dimensional family of lines, but not by a higher dimensional family.

Algebraic Geometry · Mathematics 2007-05-23 Emilia Mezzetti , Dario Portelli

We present the topological classification of real parts of real regular elliptic surfaces with a real section.

Algebraic Geometry · Mathematics 2009-03-31 Frédéric Bihan , Frédéric Mangolte

We provide a closed form expression for linear Hodge integrals on the hyperelliptic locus. Specifically, we find a succinct combinatorial formula for all intersection numbers on the hyperelliptic locus with one $\lambda$-class, and powers…

Algebraic Geometry · Mathematics 2019-10-17 Adam Afandi

We consider some problems of analytic number theory for elliptic curves which can be considered as analogues of classical questions around the distribution of primes in arithmetic progressions to large moduli, and of the question of twin…

Number Theory · Mathematics 2007-05-23 Emmanuel Kowalski