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200 篇论文

We introduce combinatorial multivector fields, associate with them multivalued dynamics and study their topological features. Our combinatorial multivector fields generalize combinatorial vector fields of Forman. We define isolated…

动力系统 · 数学 2016-05-24 Marian Mrozek

Relying on the general theory of Lie derivatives a new geometric definition of Lie derivative for general spinor fields is given, more general than Kosmann's one. It is shown that for particular infinitesimal lifts, i.e. for Kosmann vector…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Lorenzo Fatibene , Marco Ferraris , Mauro Francaviglia , Marco Godina

We determine the most general group of equivalence transformations for a family of differential equations defined by an arbitrary vector field on a manifold. We also find all invariants and differential invariants for this group up to the…

数学物理 · 物理学 2009-11-13 J. C. Ndogmo

Finite gauge transformations in double field theory can be defined by the exponential of generalized Lie derivatives. We interpret these transformations as `generalized coordinate transformations' in the doubled space by proposing and…

高能物理 - 理论 · 物理学 2015-06-05 Olaf Hohm , Barton Zwiebach

A field algebra is a ``non-commutative'' generalization of a vertex algebra. In this paper we develop foundations of the theory of field algebras.

量子代数 · 数学 2007-05-23 Bojko Bakalov , Victor G. Kac

In this paper we introduce the concept of generalized vector groupoid. Several properties of them are established.

群论 · 数学 2011-01-10 Vasile Poputa , Gheorghe Ivan

An introductory overview of vector spaces, algebras, and linear geometries over an arbitrary commutative field is given. Quotient spaces are emphasized and used in constructing the exterior and the symmetric algebras of a vector space.…

历史与综述 · 数学 2011-10-18 Richard A. Smith

Although the vectorization operation is known and well-defined, it is only defined for 2-D matrices, and its inverse isn't as well-popularized. This work proposes to generalize the vectorization to higher dimensions, and define…

数值分析 · 数学 2023-11-08 Vitor Curtarelli

In our previous paper entitled "Axiomatic differential geometry -towards model categories of differential geometry-, we have given a category-theoretic framework of differential geometry. As the first part of our series of papers concerned…

微分几何 · 数学 2012-11-02 Hirokazu Nishimura

A general type of ray class fields of global function fields is investigated. The systematic computation of their genera leads to new examples of curves over finite fields with comparatively many rational points.

代数几何 · 数学 2007-05-23 Roland Auer

This short report establishes some basic properties of smooth vector fields on product manifolds. The main results are: (i) On a product manifold there always exists a direct sum decomposition into horizontal and vertical vector fields.…

微分几何 · 数学 2011-06-07 Stefan Kurz

We determine the universal central extension of the Lie algebra of hamiltonian vector fields, thereby classifying its central extensions. Furthermore, we classify the central extensions of the Lie algebra of symplectic vector fields, of the…

辛几何 · 数学 2016-12-21 Bas Janssens , Cornelia Vizman

Generalized gauge fields are tensor fields with mixed symmetries. For gravity and higher spins in dimensions greater than four, the fundamental field in the "magnetic representation" is a generalized gauge field. It is shown that the analog…

高能物理 - 理论 · 物理学 2015-06-16 Claudio Bunster , Marc Henneaux

We consider a family of vector fields and we assume a horizontal regularity on their derivatives. We discuss the notion of commutator showing that different definitions agree. We apply our results to the proof of a ball-box theorem and…

经典分析与常微分方程 · 数学 2013-02-20 Daniele Morbidelli , Annamaria Montanari

An alternating sum of compositions of N vector fields is called N-commutator. In general N-commutator of N vector fields is no longer a vector field. Question: is it possible to find N=N(n), such that N-commutator of any vector fields in…

环与代数 · 数学 2007-05-23 A. S. Dzhumadil'daev

A broader definition of generalized truncations of graphs is introduced followed by an exploration of some standard concepts and parameters with regard to generalized truncations.

组合数学 · 数学 2020-07-10 Brian Alspach , Joshua B. Connor

This is a review with examples concerning the concepts of affine (in particular, constant and linear) vector fields and fundamental vector fields on a manifold. The affine, linear and constant vector fields on a manifold are shown to be in…

微分几何 · 数学 2007-11-01 Bozhidar Z. Iliev

We describe the "generic" part of the character ring of general linear groups over a finite field in terms of quiver representations.

表示论 · 数学 2014-07-30 Emmanuel Letellier

Vector fields are a highly abstract physical concept that is often taught using visualizations. Although vector representations are particularly suitable for visualizing quantitative data, they are often confusing, especially when…

物理教育 · 物理学 2024-02-20 Christoph Hoyer , Raimund Girwidz

The generalized metric is a T-duality covariant symmetric matrix constructed from the metric and two-form gauge field and arises in generalized geometry. We view it here as a metric on the doubled spacetime and use it to give a simple…

高能物理 - 理论 · 物理学 2014-11-21 Olaf Hohm , Chris Hull , Barton Zwiebach