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In this paper we review the recently proposed path-integral counterpart of the Koopman-von Neumann operatorial approach to classical Hamiltonian mechanics. We identify in particular the geometrical variables entering this formulation and…

q-alg · Mathematics 2008-02-03 Ennio Gozzi

In this study, we introduce the concept of commutative quaternions and commutative quaternion matrices. Firstly, we give some properties of commutative quaternions and their Hamilton matrices. After that we investigate commutative…

Algebraic Geometry · Mathematics 2016-11-26 Hidayet Hüda Kösal , Murat Tosun

We consider planar noncommutative theories such that the coordinates verify a space-dependent commutation relation. We show that, in some special cases, new coordinates may be introduced that have a constant commutator, and as a consequence…

High Energy Physics - Theory · Physics 2008-11-26 D. H. Correa , C. D. Fosco , F. A. Schaposnik , G. Torroba

The possibility of reversion of the inequality in the Second Main Theorem of Cartan in the theory of holomorphic curves in projective space is discussed. A new version of this theorem is proved that becomes an asymptotic equality for a…

Complex Variables · Mathematics 2015-03-09 Alexandre Eremenko

Differential calculus on discrete sets is developed in the spirit of noncommutative geometry. Any differential algebra on a discrete set can be regarded as a `reduction' of the `universal differential algebra' and this allows a systematic…

High Energy Physics - Theory · Physics 2009-10-28 A. Dimakis , F. Müller-Hoissen

With the intent of laying the groundwork for a program that aims at explicitly describing the space of Cartan (i.e. multiplicative) connections on a general proper Lie groupoid, we begin to investigate the space of such connections in the…

Differential Geometry · Mathematics 2018-11-07 Giorgio Trentinaglia

For a couple of associative algebras we define the notion of their double and give a set of examples. Also, we discuss applications of such doubles to representation theory of certain quantum algebras and to a new type of Noncommutative…

Quantum Algebra · Mathematics 2020-10-28 Dimitri Gurevich , Pavel Saponov

In previous works, questioning the mathematical nature of the connection in the translations gauge theory formulation of Teleparallel Equivalent to General Relativity (TEGR) Theory led us to propose a new formulation using a Cartan…

General Relativity and Quantum Cosmology · Physics 2021-10-06 E. Huguet , M. Le Delliou , M. Fontanini

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…

Mathematical Physics · Physics 2025-10-29 Florio M. Ciaglia , Fabio Di Cosmo , Laura González-Bravo

The duality between the Cartesian coordinates on the Minkowski space-time and the Dirac field is investigated. Two distinct possibilities to define this duality are shown to exist. In both cases, the equations satisfied by prepotentials are…

High Energy Physics - Theory · Physics 2009-10-31 M. C. B. Abdalla , A. L. Gadelha , I. V. Vancea

Isotopic pairs and their representations are considered in a general framework of the vector superalgebra. Numerous examples of finite-dimensional and infinite-dimensional isotopic pairs are discussed. Several types of their representations…

q-alg · Mathematics 2008-02-03 Denis V. Juriev

A new approach to constructing the noncommutative scalar field theory is presented. Not only between x_i and p_j, we impose commutation relations between x_is as well as p_js, and give a new representation of x_i,p_js. We carry out both…

High Energy Physics - Theory · Physics 2009-11-07 Yoshinobu Habara

Some derivation-based differential calculi which have been used to construct models of noncommutative gauge theories are presented and commented. Some comparisons between them are made.

Mathematical Physics · Physics 2010-01-18 T. Masson

Let $K$ denote a field, and let $V$ denote a vector space over $K$ with finite positive dimension. Consider a pair of linear transformations $A:V\to V$ and $A^*:V\to V$ that satisfy both conditions below: (i) There exists a basis for $V$…

Combinatorics · Mathematics 2007-05-23 Tatsuro Ito , Kenichiro Tanabe , Paul Terwilliger

A typical example of a Cartan calculus consists of the Lie derivative and the contraction with vector fields of a manifold on the derivation ring of the de Rham complex. In this manuscript, a second stage of the Cartan calculus is…

Algebraic Topology · Mathematics 2024-05-17 Katsuhiko Kuribayashi , Takahito Naito , Shun Wakatsuki , Toshihiro Yamaguchi

Starting from the concept of the universal exterior algebra in non-commutative differential geometry we construct differential forms on the quantum phase-space of an arbitrary system. They bear the same natural relationship to quantum…

High Energy Physics - Theory · Physics 2009-10-28 M. Reuter

In this paper, complement-equivalent arithmetic Zariski pairs will be exhibited answering in the negative a question by Eyral-Oka on these curves and their groups. A complement-equivalent arithmetic Zariski pair is a pair of complex…

Algebraic Geometry · Mathematics 2018-05-04 E. Artal Bartolo , J. I. Cogolludo-Agustín

In this paper, we first provide an updated survey of the geometry of complex Cartan spaces. New characterizations for some particular classes of complex Cartan spaces are pointed out, e.g. Landsberg-Cartan, strongly Berwald-Cartan and…

Differential Geometry · Mathematics 2016-05-04 Nicoleta Aldea , Gheorghe Munteanu

An affine Cartan calculus is developed. The concepts of special affine bundles and special affine duality are introduced. The canonical isomorphisms, fundamental for Lagrangian and Hamiltonian formulations of the dynamics in the affine…

Differential Geometry · Mathematics 2007-05-23 Pawel Urbanski

There is renewed interest in the coideal subalgebras used to form quantum symmetric pairs because of recent discoveries showing that they play a fundamental role in the representation theory of quantized enveloping algebras. However, there…

Representation Theory · Mathematics 2019-01-01 Gail Letzter