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Related papers: Remarks on 5-dimensional complete intersections

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We establish the upper bound in the multiplicity conjecture of Herzog, Huneke and Srinivasan for the codimension three almost complete intersections. We also give some partial results in the case where I is the aci linked to a complete…

Commutative Algebra · Mathematics 2007-12-06 Sumi Seo , Hema Srinivasan

This article is a continuation of my previous paper on miraculous pentagrams published in Annales Scientifiques de Facult\'e des Sciences de Toulouse in 2013. We discuss the moduli space of miraculous pentagrams which is the Del Pezzo…

Algebraic Geometry · Mathematics 2025-08-20 Vadim Schechtman

This paper solves the global moduli problem for regular holonomic D-modules with normal crossing singularities on a nonsingular complex projective variety. This is done by introducing a level structure (which gives rise to…

alg-geom · Mathematics 2008-02-03 Nitin Nitsure

Several generalizations of a commutative ring that is a graded complete intersection are proposed for a noncommutative graded $k$-algebra; these notions are justified by examples from noncommutative invariant theory.

Rings and Algebras · Mathematics 2014-06-25 Ellen E Kirkman , James Kuzmanovich , James J. Zhang

We study the holomorphic sections of the Deligne-Hitchin moduli space of a compact Riemann surface that are invariant under the natural anti-holomorphic involutions of the moduli space. Their relationships with the harmonic maps are…

Differential Geometry · Mathematics 2020-03-17 Indranil Biswas , Sebastian Heller , Markus Roeser

We determine the product structure on Hochschild cohomology of commutative algebras in low degrees, obtaining the answer in all degrees for complete intersection algebras. As applications, we consider cyclic extension algebras as well as…

Commutative Algebra · Mathematics 2014-01-13 Ragnar-Olaf Buchweitz , Collin Roberts

We consider general Morse-Smale diffeomorphisms on a closed orientable two-dimentional surface. In this paper it is proved that the complete topological invariant of Morse-Smale diffeomorphisms is finite, the algorithm of the construction…

Dynamical Systems · Mathematics 2007-05-23 I. Vlasenko

This supplementary part of the paper gr-qc 9312038 contains the necessary proofs of the claims stated in the main part.

General Relativity and Quantum Cosmology · Physics 2007-05-23 S. Tertychniy

In this paper we study relations between intersection numbers on moduli spaces of curves and Hurwitz numbers. First, we prove two formulas expressing Hurwitz numbers of (generalized) polynomials via intersections on moduli spaces of curves.…

Algebraic Geometry · Mathematics 2010-10-04 Sergei Shadrin

This paper aims to undertake an exploration of the behavior of the moduli space of line arrangements while establishing its combinatorial interplay with the incidence structure of the arrangement. In the first part, we investigate…

Algebraic Geometry · Mathematics 2024-02-26 Benoît Guerville-Ballé , Juan Viu-Sos

We are interested in classifying groups of local biholomorphisms (or even formal diffeomorphisms) that can be endowed with a canonical structure of algebraic group up to add extra formal diffeomorphisms. We show that this is the case for…

Dynamical Systems · Mathematics 2022-03-25 Javier Ribón

We investigate various homotopy invariant formulations of commutative algebra in the context of rational homotopy theory. The main subject is the complete intersection condition, where we show that a growth condition implies a structure…

Algebraic Topology · Mathematics 2010-06-11 J. P. C. Greenlees , K. Hess , S. Shamir

We discuss the worldvolume description of intersecting D-branes, including the metric on the moduli space of deformations. We impose a choice of static gauge that treats all the branes on an equal footing and describes the intersection of…

High Energy Physics - Theory · Physics 2010-12-03 N. D. Lambert

I will explain my joint paper `Instantons moduli spaces and W-algebras' with A.Braverman, M.Finkelberg, arXiv:1406.2381. I will concentrate on the geometric part, that is a study of perverse sheaves on instanton moduli spaces. I place a…

Representation Theory · Mathematics 2016-11-08 Hiraku Nakajima

We propose a new definition of the elliptic genera for complete intersections, not necessarily nonsingular, in projective spaces. We also prove they coincide with the expressions obtained from Landau-Ginzburg model by an elementary…

Algebraic Geometry · Mathematics 2007-05-23 Xiaoguang Ma , Jian Zhou

We introduce an algorithm that exploits a combinatorial symmetry of an arrangement in order to produce a geometric reflection between two disconnected components of its moduli space. We apply this method to disqualify three real examples…

Algebraic Geometry · Mathematics 2015-08-11 Meirav Amram , Moshe Cohen , Hao Sun , Mina Teicher , Fei Ye , Anna Zarkh

We show that difference Painleve equations can be interpreted as isomorphisms of moduli spaces of d-connections on the projective line with given singularity structure. We also derive a new difference equation. It is the most general…

Algebraic Geometry · Mathematics 2007-06-21 D. Arinkin , A. Borodin

We review some relations occurring between the combinatorial intersection theory on the moduli spaces of stable curves and the asymptotic behavior of the 't Hooft-Kontsevich matrix integrals. In particular, we give an alternative proof of…

Algebraic Geometry · Mathematics 2013-09-30 Domenico Fiorenza , Riccardo Murri

We give a canonical birational map between the moduli space of pfaffian vector bundles on a cubic surface and the space of complete pentahedra inscribed in the cubic surface. The universal situation is also considered, and we obtain a…

Algebraic Geometry · Mathematics 2013-04-23 Frederic Han

We introduce the notion of residual intersections of modules and prove their existence. We show that projective dimension one modules have Cohen-Macaulay residual intersections, namely they satisfy the relevant Artin-Nagata property. We…

Commutative Algebra · Mathematics 2022-05-30 Alessandra Costantini , Louiza Fouli , Jooyoun Hong