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A simple theory of the covariant derivatives, deformed derivatives and relative covariant derivatives of multivector and multiform fields is presented using algebraic and analytical tools developed in previous papers.

数学物理 · 物理学 2007-05-23 V. V. Fernandez , A. M. Moya , E. Notte-Cuello , W. A. Rodrigues

In an earlier paper (arXiv:2212.11163) I constructed a complex of differential forms on a local $C^\infty$-ringed space. In this paper I define a sheaf of vector fields (``the tangent sheaf'') on a local $C^\infty$-ringed space, define…

微分几何 · 数学 2025-09-10 Eugene Lerman

The aim of the present paper is to investigate new classes of symplectically fat fibre bundles. We prove a general existence theorem for fat vectors with respect to the canonical invariant connections. Based on this result we give new…

辛几何 · 数学 2015-05-18 J. Kedra , A. Tralle , A. Woike

In this note we make use of some properties of vector fields on a manifold to give an alternate proof to [3] for the equivalence between connections and parallel transport on vector bundles over manifolds. Out of the proof will emerge a new…

微分几何 · 数学 2011-02-23 Florin Dumitrescu

Principal angles are used to define an angle bivector of subspaces, which fully describes their relative inclination. Its exponential is related to the Clifford geometric product of blades, gives rotors connecting subspaces via minimal…

度量几何 · 数学 2021-09-23 André L. G. Mandolesi

Classical field theory is considered as a theory of unparametrized surfaces embedded in a configuration space, which accommodates, in a symmetric way, spacetime positions and field values. Dynamics is defined via the (Hamiltonian)…

数学物理 · 物理学 2016-02-02 Vaclav Zatloukal

In this work a theorical framework to apply the Poincar\'e compactification technique to locally Lipschitz continuous vector fields is developed. It is proved that these vectors fields are compactifiable in the n-dimensional sphere, though…

动力系统 · 数学 2020-02-07 José Luis Bravo , Manuel Fernández , Antonio E. Teruel

We introduce the notion of a field of covariances, a contravariant functor from non-commutative probability spaces to Hilbert spaces, as the natural categorical analogue of statistical covariance. In the case of finite-dimensional…

数学物理 · 物理学 2025-10-29 Florio M. Ciaglia , Fabio Di Cosmo , Laura González-Bravo

In this article, we study the generalized Poincare problem from the opposite perspective, by establishing lower bounds on the degree of the vector field in terms of invariants of the variety.

交换代数 · 数学 2024-03-18 Marc Chardin , S. Hamid Hassanzadeh , Claudia Polini , Aron Simis , Bernd Ulrich

We develop a general framework for quantum field theory on noncommutative spaces, i.e., spaces with quantum group symmetry. We use the path integral approach to obtain expressions for $n$-point functions. Perturbation theory leads us to…

高能物理 - 理论 · 物理学 2009-10-31 Robert Oeckl

The dynamic of a classical system can be expressed by means of Poisson brackets. In this paper we generalize the relation between the usual non covariant Hamiltonian and the Poisson brackets to a covariant Hamiltonian and new brackets in…

经典物理 · 物理学 2007-05-23 A. Berard , H. Mohrbach , P. Gosselin

The notion of the genus of a quadratic form is generalized to vertex operator algebras. We define it as the modular braided tensor category associated to a suitable vertex operator algebra together with the central charge. Statements…

量子代数 · 数学 2007-05-23 Gerald Hoehn

We introduce a method to estimate the size of the domain of definition of the solutions of a meromorphic vector field on a neighborhood of its pole divisor. The corresponding techniques are, in a certain sense, quantitative versions of some…

动力系统 · 数学 2013-12-10 Julio C. Rebelo , Helena Reis

Vector algebra is a powerful and needful tool for Physics but unfortunately, due to lack of mathematical skills, it becomes misleading for first undergraduate courses of science and engineering studies. Standard vector identities are…

综合物理 · 物理学 2009-04-14 Miguel Angel Rodriguez-Valverde , Maria Tirado-Miranda

In this paper we classify invariant noncommutative connections in the framework of the algebra of endomorphisms of a complex vector bundle. It has been proven previously that this noncommutative algebra generalizes in a natural way the…

数学物理 · 物理学 2009-11-10 Thierry Masson , Emmanuel Serie

In the main part of this paper a connection is just a fiber projection onto a (not necessarily integrable) distribution or sub vector bundle of the tangent bundle. Here curvature is computed via the Froelicher-Nijenhuis bracket, and it is…

微分几何 · 数学 2016-09-06 Peter W. Michor

We present a classification of hamiltonian vector fields on multisymplectic and polysymplectic fiber bundles closely analogous to the one known for the corresponding dual jet bundles that appear in the multisymplectic and polysymplectic…

数学物理 · 物理学 2010-10-05 Michael Forger , Mário Otávio Salles

We discuss the covariant formulation of the dynamics of particles with abelian and non-abelian gauge charges in external fields. Using this formulation we develop an algorithm for the construction of constants of motion, which makes use of…

高能物理 - 理论 · 物理学 2008-11-26 J. W. van Holten

We investigate the existence of coordinate transformations which bring a given vector field on a manifold equipped with an involutive distribution into the form of a second-order differential equation field with parameters. We define…

微分几何 · 数学 2011-12-06 T. Mestdag , M. Crampin

We study the structure of an algebraically closed field with extra function resembling the classical exponentiation on complex numbers.

逻辑 · 数学 2007-05-23 Boris Zilber