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Motion polynomials (polynomials over the dual quaternions with nonzero real norm) describe rational motions. We present a necessary and sufficient condition for reduced bounded motion polynomials to admit factorizations into monic linear…

Rings and Algebras · Mathematics 2024-12-03 Zijia Li , Hans-Peter Schröcker , Mikhail Skopenkov , Daniel F. Scharler

Spinor polynomials are polynomials with coefficients in the even sub-algebra of conformal geometric algebra whose norm polynomial is real. They describe rational conformal motions. Factorizations of spinor polynomial corresponds to the…

Rings and Algebras · Mathematics 2024-02-23 Zijia Li , Hans-Peter Schröcker , Johannes Siegele , Daren A. Thimm

We present a new algorithm to decompose generic spinor polynomials into linear factors. Spinor polynomials are certain polynomials with coefficients in the geometric algebra of dimension three that parametrize rational conformal motions.…

Rings and Algebras · Mathematics 2023-11-14 Zijia Li , Hans-Peter Schröcker , Johannes Siegele

In this paper, we consider the existence of a factorization of a monic, bounded motion polynomial. We prove existence of factorizations, possibly after multiplication with a real polynomial and provide algorithms for computing polynomial…

Symbolic Computation · Computer Science 2015-02-27 Zijia Li , Josef Schicho , Hans-Peter Schröcker

We present an algorithm to compute all factorizations into linear factors of univariate polynomials over the split quaternions, provided such a factorization exists. Failure of the algorithm is equivalent to non-factorizability for which we…

Rings and Algebras · Mathematics 2022-11-08 Daniel F. Scharler , Hans-Peter Schröcker

We consider bivariate polynomials over the skew field of quaternions, where the indeterminates commute with all coefficients and with each other. We analyze existence of univariate factorizations, that is, factorizations with univariate…

Rings and Algebras · Mathematics 2021-11-08 Johanna Lercher , Hans-Peter Schröcker

In this paper we investigate factorizations of polynomials over the ring of dual quaternions into linear factors. While earlier results assume that the norm polynomial is real ("motion polynomials"), we only require the absence of real…

Rings and Algebras · Mathematics 2022-02-21 Johannes Siegele , Martin Pfurner , Hans-Peter Schröcker

Polynomials commute under composition are referred to as commuting polynomials. In this paper, we study division properties for commuting polynomials with rational (and integer) coefficients. As a consequence, we show an algebraic…

Commutative Algebra · Mathematics 2026-03-05 Kimiko Hasegawa , Rin Sugiyama

We consider polynomials of bi-degree $(n,1)$ over the skew field of quaternions where the indeterminates commute with each other and with all coefficients. Polynomials of this type do not generally admit factorizations. We recall a…

Rings and Algebras · Mathematics 2022-02-21 Johanna Lercher , Daniel F. Scharler , Hans-Peter Schröcker , Johannes Siegele

Polynomial factorization in conventional sense is an ill-posed problem due to its discontinuity with respect to coefficient perturbations, making it a challenge for numerical computation using empirical data. As a regularization, this paper…

Numerical Analysis · Mathematics 2021-03-09 Wenyuan Wu , Zhonggang Zeng

The so-called polynomial equations play an important role both in algebra and in the theory of functional equations. If the unknown functions in the equation are additive, relatively many results are known. However, even in this case, there…

Commutative Algebra · Mathematics 2024-03-04 Eszter Gselmann , Mehak Iqbal

In this article, we prove some factorization results for several classes of polynomials having integer coefficients, which in particular yield several classes of irreducible polynomials. Such classes of polynomials are devised by imposing…

Number Theory · Mathematics 2024-01-17 Jitender Singh , Rishu Garg

We propose a geometric explanation for the observation that generic quadratic polynomials over split quaternions may have up to six different factorizations while generic polynomials over Hamiltonian quaternions only have two. Split…

Metric Geometry · Mathematics 2018-05-10 Zijia Li , Josef Schicho , Hans-Peter Schröcker

We discuss existence of factorizations with linear factors for (left) polynomials over certain associative real involutive algebras, most notably over Clifford algebras. Because of their relevance to kinematics and mechanism science, we put…

Rings and Algebras · Mathematics 2018-09-28 Zijia Li , Daniel F. Scharler , Hans-Peter Schröcker

This article provides a gentle introduction for a general mathematical audience to the factorization theory of motion polynomials and its application in mechanism science. This theory connects in a rather unexpected way a seemingly abstract…

Rings and Algebras · Mathematics 2015-07-21 Gábor Hegedüs , Zijia Li , Josef Schicho , Hans-Peter Schröcker

Since its introduction in 2012, the factorization theory for rational motions quickly evolved and found applications in theoretical and applied mechanism science. We provide an accessible introduction to motion factorization with many…

Robotics · Computer Science 2015-06-30 Zijia Li , Tudor-Dan Rad , Josef Schicho , Hans-Peter Schröcker

Jones and Boston conjectured that the factorization process for iterates of irreducible quadratic polynomials over finite fields is approximated by a Markov model. In this paper, we find unexpected and intricate behavior for some quadratic…

Number Theory · Mathematics 2013-12-30 Vefa Goksel , Shixiang Xia , Nigel Boston

In a previous work, both the constants of motion of a classical system and the symmetries of the corresponding quantum version have been computed with the help of factorizations. As their expressions were not polynomial, in this paper the…

Mathematical Physics · Physics 2014-04-29 J. A. Calzada , Ş. Kuru , J. Negro

We give an infinite family of polynomials that have roots modulo every positive integer but fail to have rational roots. Each polynomial in this family is made up of monic quadratic factors that do not have linear term.

Number Theory · Mathematics 2022-07-19 Bhawesh Mishra

Revisiting canonical integration of the classical solid near a uniform rotation, canonical action angle coordinates, hyperbolic and elliptic, are constructed in terms of various power series with coefficients which are polynomials in a…

Exactly Solvable and Integrable Systems · Physics 2015-06-04 Jean Pierre Francoise , Pedro Garrido , Giovanni Gallavotti
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