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We present alternative postulates for Euclidean geometry whose merit is that they lead to a new class of invariants and associated geometries for real finite-dimensional unital associative algebras.

Rings and Algebras · Mathematics 2025-09-11 Fred Greensite

The variational properties of the scalar so--called ``Universal'' equations are reviewed and generalised. In particular, we note that contrary to earlier claims, each member of the Euler hierarchy may have an explicit field dependence. The…

High Energy Physics - Theory · Physics 2008-11-26 J. A. Mulvey

Geometric algebra is the natural outgrowth of the concept of a vector and the addition of vectors. After reviewing the properties of the addition of vectors, a multiplication of vectors is introduced in such a way that it encodes the famous…

General Mathematics · Mathematics 2018-02-23 Sergio Ramos Ramirez , Jose Alfonso Juarez Gonzalez , Garret Sobczyk

We discuss various old and new definitions of the notion of a vector field on a convenient manifold that can be proved to give rise to Lie algebras, and are in finite dimensions equivalent to the standard notion of a vector field.

Differential Geometry · Mathematics 2026-04-21 Arnold Neumaier , Phillip Josef Bachler

We examine the visualization of quantum mechanics in phase space by means of the Wigner function and the Wigner function flow as a complementary approach to illustrating quantum mechanics in configuration space by wave functions. The Wigner…

Quantum Physics · Physics 2011-01-17 Heiko Bauke , Noya Ruth Itzhak

We hypothesise that properties of space could underly some patterns observed in nature. We explore the possibility that the observed variety of matter particles and the pattern of their properties arise due to the non-orientability of the…

General Physics · Physics 2007-05-23 V. N. Yershov

We study a class of algebras with non-Lie commutation relations whose symplectic leaves are surfaces of revolution: a cylinder or a torus. Over each of such surfaces we introduce a family of complex structures and Hilbert spaces of…

Quantum Algebra · Mathematics 2007-05-23 M. V. Karasev , E. M. Novikova

This note should clarify how the behavior of certain invariant objects reflects the geometric convexity of balanced domains.

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug

Complementary idempotent paravectors and their ordered compositions, are used to represent multivector basis elements of geometric Clifford algebra for 3D Euclidean space as the states of a geometric byte in a given frame of reference. Two…

Quantum Physics · Physics 2009-11-13 Victor I. Tarkhanov , Michael M. Nesterov

A multidimensional basis of p-adic wavelets is constructed. The relation of the constructed basis to a system of coherent states (i.e. orbit of action) for some $p$-adic group of linear transformations is discussed. We show that the set of…

Mathematical Physics · Physics 2011-05-10 S. Albeverio , S. V. Kozyrev

In contrast to many known results concerning periodic tilings of the Euclidean plane with pentagons, here tilings with rotational symmetry are investigated. A certain class of convex pentagons is introduced. It can be shown that for any…

Metric Geometry · Mathematics 2025-07-02 Bernhard Klaassen

A $\lambda$-translating soliton with density vector $\vec{v}$ is a surface in Euclidean space whose mean curvature $H$ satisfies $2H=2\lambda+\langle N,\vec{v}\rangle$, where $N$ is the Gauss map. We classify all $\lambda$-translating…

Differential Geometry · Mathematics 2018-02-23 Rafael López

We present two geometric interpretations for complex multivectors and determinants: a little known one in terms of square roots of volumes, and a new one which uses fractions of volumes and allows graphical representations. The fraction…

Complex Variables · Mathematics 2025-08-22 André L. G. Mandolesi

We show that Wigner's infinite spin particle classically is described by a reparametrization invariant higher order geometrical Lagrangian. The model exhibit unconventional features like tachyonic behaviour and momenta proportional to…

High Energy Physics - Theory · Physics 2009-11-11 Ludde Edgren , Robert Marnelius , Per Salomonson

The algebra of fourvectors is described. The fourvectors are more appropriate than the Hamilton quaternions for its use in Physics and the sciences in general. The fourvectors embrace the 3D vectors in a natural form. It is shown the…

Mathematical Physics · Physics 2007-11-22 Diego Saa

A representation of the central extension of the unitary Lie algebra coordinated with a skew Laurent polynomial ring is constructed using vertex operators over an integral Z_2-lattice. The irreducible decomposition of the representation is…

Quantum Algebra · Mathematics 2021-03-17 Fulin Chen , Yun Gao , Naihuan Jing , Shaobin Tan

Vectors fields defined on surfaces constitute relevant and useful representations but are rarely used. One reason might be that comparing vector fields across two surfaces of the same genus is not trivial: it requires to transport the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Amine Bohi , Guillaume Auzias , Julien Lefèvre

A survey of some recent and important results which have to do with integrable equations and their relationship with the theory of surfaces is given. Some new results are also presented. The concept of the moving frame is examined, and it…

Mathematical Physics · Physics 2009-09-23 Paul Bracken

We elucidate consistency of the so-called corner equations which are elementary building blocks of Euler-Lagrange equations for two-dimensional pluri-Lagrangian problems. We show that their consistency can be derived from the existence of…

Exactly Solvable and Integrable Systems · Physics 2016-03-08 Raphael Boll , Matteo Petrera , Yuri B. Suris

We introduce the notion of (maximal) multi-truncations on a vector lattice as a generalization of the notion of truncations, an object of recent origin. We obtain a Johnson-Kist type representation of vector lattices with maximal…

Functional Analysis · Mathematics 2020-07-24 Karim Boulabiar , Rawaa Hajji