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Some more general "inheritance conditions" have been found for a given set of symmetry generators $\{\mathbf{Z}_{\bar{l}}\}$ acting on some set of coupled ordinary differential equations, once the "first integration method" has been applied…

Classical Analysis and ODEs · Mathematics 2020-02-05 T. Pailas , P. A. Terzis , T. Christodoulakis

We obtain tight bounds for the minimal number of generators of an ideal with bounded-degree generators in a polynomial ring $K[X_1,\dots,X_n],$ as well as a sharp quantification of the maximum possible size of a minimal generating set of…

Commutative Algebra · Mathematics 2025-09-23 Andrei Mandelshtam

Necessary and sufficient conditions for finite commutative semihypergroups to be built from abelian groups of the same order are established.

Representation Theory · Mathematics 2017-03-08 Stan Onypchuk

We investigate some weighted integer partitions whose generating functions are double-series. We will establish closed formulas for these $q$-double series and deduce that their coefficients are non-negative. This leads to inequalities…

Number Theory · Mathematics 2025-07-15 George E. Andrews , Mohamed El Bachraoui

We give a generalization of the ergodic theorem for semi-Markov linear-type processes. This generalization is proved for the case when a common support of distributions defining this process is not arithmetic. Also we give an uniform…

Probability · Mathematics 2016-03-22 Galina A. Zverkina

We present an algorithmic proof of the Cartan-Dieudonn\'e theorem on generalized real scalar product spaces with arbitrary signature. We use Clifford algebras to compute the factorization of a given orthogonal transformation as a product of…

Rings and Algebras · Mathematics 2021-11-05 M. A. Rodríguez-Andrade , G. Aragón-González , J. L. Aragón , Luis Verde-Star

In this paper we investigate injective generation for graded rings. We first examine the relation between injective generation and graded injective generation for graded rings. We then reduce the study of injective generation for graded…

Representation Theory · Mathematics 2025-04-08 Panagiotis Kostas , Chrysostomos Psaroudakis

In this work we define a unified generating functions for 9 different kinds of set partitions including cyclically ordered set partitions. Such generating function depends on 4 parameters. We consider property of this function and provide…

Combinatorics · Mathematics 2022-08-29 Orli Herscovici

Gardner conjectured that if two bounded measurable sets $A,B \subset \mathbb{R}^n$ are equidecomposable by a set of isometries $\Gamma$ generating an amenable group then $A$ and $B$ admit a measurable equidecomposition by all isometries.…

Metric Geometry · Mathematics 2021-09-03 Gabor Kun

Let $G$ be a finite almost simple group. It is well known that $G$ can be generated by 3 elements, and in previous work we showed that 6 generators suffice for all maximal subgroups of $G$. In this paper we consider subgroups at the next…

Group Theory · Mathematics 2016-11-21 Timothy C. Burness , Martin W. Liebeck , Aner Shalev

We classify all subgroups of $SO(3)$ that are generated by two elements, each a rotation of finite order, about axes separated by an angle that is a rational multiple of $\pi$. In all cases we give a presentation of the subgroup. In most…

Group Theory · Mathematics 2018-07-11 Charles Radin , Lorenzo Sadun

We study the coarse-graining approach to derive a generator for the evolution of an open quantum system over a finite time interval. The approach does not require a secular approximation but nevertheless generally leads to a…

Statistical Mechanics · Physics 2020-05-08 Gernot Schaller , Julian Ablaßmayer

For an aperiodic subshift of finite type $Y$ and for a subshift $X$ with topological entropy less than the topological entropy of $Y$, a theorem is proved in Krieger: On the subsystems of topological Markov chains, Ergodic Theory \&…

Dynamical Systems · Mathematics 2025-09-16 Wolfgang Krieger

We establish connections between several properties of topological dynamical systems, such as: - every point is generic for an ergodic measure, - the map sending points to the measures they generate is continuous, - the system splits into…

Dynamical Systems · Mathematics 2021-01-14 Tomasz Downarowicz , Benjamin Weiss

We form a sequence of oblong matrices by evaluating an integrable vector-valued function along the orbit of an ergodic dynamical system. We obtain an almost sure asymptotic result for the permanents of those matrices. We also give an…

Dynamical Systems · Mathematics 2016-10-24 Jairo Bochi , Godofredo Iommi , Mario Ponce

In the current paper we attempt to transfer the notion of the projectional entropy, originally defined for multidimensional subshifts, to the case of actions of amenable groups. The main theorem states that if a system is strongly…

Dynamical Systems · Mathematics 2024-03-05 Michał Prusik

In this paper, we assess possibilities of generating cluster states with different topologies being possessed of a finite squeezing resource of the initial oscillators used to generate a cluster state. We obtained the condition on minimum…

Quantum Physics · Physics 2019-04-10 S. B. Korolev , A. D. Manukhova , K. S. Tikhonov , T. Yu. Golubeva , Yu. M. Golubev

We prove that generating subspaces of matrix rings over finite fields are counted by polynomials. We use this result to define and study two-variable versions of polynomials counting isomorphism classes of absolutely irreducible…

Representation Theory · Mathematics 2025-10-09 Markus Reineke

Let $A$ be a $K$-subalgebra of the polynomial ring $S=K[x_1,\ldots,x_d]$ of dimension $d$, generated by finitely many monomials of degree $r$. Then the Gauss algebra $\GG(A)$ of $A$ is generated by monomials of degree $(r-1)d$ in $S$. We…

Algebraic Geometry · Mathematics 2018-11-09 Jürgen Herzog , Raheleh Jafari , Abbas Nasrollah Nejad

Entropy production for a system not in the thermodynamic limit is formulated using Hill's nanothermodynamics, in which a macroscopic ensemble of such systems is considered. External influence of the environment on the average nanosystem is…

Statistical Mechanics · Physics 2011-03-21 J. Carrete , L. M. Varela , L. J. Gallego
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