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Quaternions are an important tool to describe the orientation of a molecule. This paper considers the use of quaternions in matching two conformations of a molecule, in interpolating rotations, in performing statistics on orientational…

Computational Physics · Physics 2007-05-23 Charles F. F. Karney

A formal description of quaternions by means of exterior calculus is presented. Considering a three-dimensional space-time characterized by three time-like coordinates, we have been able to consistently recover a suitable formulation of…

General Physics · Physics 2026-04-14 Ivano Colombaro

The theory of commutative monads on cartesian closed categories provides a framework where aspects of the theory of distributions and other extensive quantities can be formulated and some results proved. We make explicit a link between our…

Category Theory · Mathematics 2011-08-31 Anders Kock

The main properties of hypercomplex generalization of quaternion system as antiquaternion are presented in this article. Definitions and studied of antiquaternions conjugation are introduced, their norm and zero divisor, and how to perform…

Numerical Analysis · Computer Science 2014-06-16 Yakiv O. Kalinovsky , Dmitry V. Lande , Dr. Sc. , Yuliya E. Boyarinova , Alina S. Turenko

In this paper we obtained several properties that the characteristic polynomials of the unit-primitive matrix satisfy. In addition, using these properties we have shown that the recurrence relation given as in the formula (1) is true. In…

Combinatorics · Mathematics 2023-05-09 Byeong-Gil Choe , Hyeong-Kwan Ju

We develop several methods, based on the geometric relationship between the eigenspaces of a matrix and its adjoint, for determining whether a square matrix having distinct eigenvalues is unitarily equivalent to a complex symmetric matrix.…

Functional Analysis · Mathematics 2010-03-16 Stephan Ramon Garcia , Levon Balayan

This article is a short review on the relationship between convergent matrix integrals, formal matrix integrals, and combinatorics of maps. We briefly summarize results developed over the last 30 years, as well as more recent discoveries.…

Mathematical Physics · Physics 2007-05-23 Bertrand Eynard

Standard (Arnold-Liouville) integrable systems are intimately related to complex rotations. One can define a generalization of these, sharing many of their properties, where complex rotations are replaced by quaternionic ones. Actually this…

Mathematical Physics · Physics 2016-11-23 G. Gaeta , P. Morando

Based on a brief review on developments of number system, a new developed pattern is proposed. The quaternion is extended to a matrix form aI+bC+cB+dA, in which the unit matrix I and three special matrices C,B,A correspond to number 1 and…

General Mathematics · Mathematics 2009-06-23 Yi-Fang Chang

An algebraic investigation on bicomplex numbers is carried out here. Particularly matrices and linear maps defined on them are discussed. A new kind of cartesian product, referred to as an idempotent product, is introduced and studied. The…

Representation Theory · Mathematics 2023-12-04 Anjali , Fahed Zulfeqarr , Akhil Prakash , Prabhat Kumar

Let p and q be two positive primes. In this paper we obtain a complete characterization of quaternion division algebras H_K(p,q) over the composite K of n quadratic number fields. Also, in Section 6, we obtain a characterization of…

Number Theory · Mathematics 2018-03-20 Vincenzo Acciaro , Diana Savin

For a permutation $\pi$, and the corresponding permutation matrix, we introduce the notion of {\em discrete derivative}, obtained by taking differences of successive entries in $\pi$. We characterize the possible derivatives of…

Combinatorics · Mathematics 2019-08-13 Richard A. Brualdi , Geir Dahl

We discuss an unusual phenomenon in (integral) positive ternary quadratic forms. We also describe an interesting pairing of genera of ternary forms.

Number Theory · Mathematics 2012-05-11 William C. Jagy

Matrices are very popular and widely used in mathematics and other fields of science. Every mathematician has known the properties of finite-sized matrices since the time of study. In this paper, we consider the basic theory of infnite…

General Mathematics · Mathematics 2021-08-19 Lukasz Matysiak , Weronika Przewozniak , Natalia Rulinska

We review known factorization results in quaternion matrices. Specifically, we derive the Jordan canonical form, polar decomposition, singular value decomposition, the QR factorization. We prove there is a Schur factorization for commuting…

Operator Algebras · Mathematics 2014-01-16 Terry A. Loring

In this survey article, we describe recent work that connects three separate objects of interest: totally nonnegative matrices; quantum matrices; and matrix Poisson varieties.

Quantum Algebra · Mathematics 2009-11-17 S. Launois , T. H. Lenagan

This paper presents a comprehensive description of the coordinate rings and Poisson brackets associated with the fourth Calogero-Moser space and invariant commuting pairs of matrices of size four. As an application, we compute their…

Algebraic Geometry · Mathematics 2025-02-21 Farkhod Eshmatov , Xabier García-Martínez , Zafar Normatov , Rustam Turdibaev

An introductory theory of frames on finite dimensional quaternion Hilbert spaces is demonstrated along the lines of their complex counterpart.

Mathematical Physics · Physics 2017-02-23 M. Khokulan , K. Thirulogasanthar , S. Srisatkunarajah

We introduce the concept of Almost-Companion Matrix (ACM) by relaxing the non-derogatory property of the standard Companion Matrix (CM). That is, we define an ACM as a matrix whose characteristic polynomial coincides with a given monic and…

Quantum Physics · Physics 2023-02-22 L. A. Markovich , A. Migliore , A. Messina

The goal of this study is to present quaternion Kaehler analogue of Hamiltonian mechanics. Finally, the some results related to quaternion Kaehler dynamical systems were also given.

Mathematical Physics · Physics 2009-02-24 Mehmet Tekkoyun