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arXiv 1706.01080math.RA
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有限维代数流的构造

Construction of flows of finite-dimensional algebras

M. Ladra, U. A. Rozikov

摘要:

最近,我们引入了有限维代数的流(依赖于时间)的概念。代数流(FA)是连续时间动力系统的一种特殊情况,其状态是有限维代数,其结构常数的(立方)矩阵满足Kolmogorov-Chapman方程(KCE)的类似物。由于三次矩阵之间有几种乘法,我们首先要确定一个乘法,然后考虑关于固定乘法的KCE。KCE的解的存在提供了FA的存在。本文的目的是找到相应的KCE有解的乘法的充分条件。主要给出了关于三次矩阵的固定乘法的三次矩阵代数(ACM)的条件。在一些假设下的ACM(如权力结合,酉,结合,交换),我们描述了广泛的一类FA,其中包含代数的任意有限维。特别地,采用连续时间马尔可夫过程的理论,我们构造了一类由立方矩阵的矩阵指数给出的FA。此外,我们显着地扩展了关于我们以前的论文(J.代数470(2017)263- 288)的Maksimov乘法给出的FA集。对于几个FA,我们研究了代数的时间依赖行为(动力学)。我们推导出一个系统的微分方程的FA。

英文摘要:

Recently, we introduced the notion of flow (depending on time) of finite-dimensional algebras. A flow of algebras (FA) is a particular case of a continuous-time dynamical system whose states are finite-dimensional algebras with (cubic) matrices of structural constants satisfying an analogue of the Kolmogorov-Chapman equation (KCE). Since there are several kinds of multiplications between cubic matrices one has fix a multiplication first and then consider the KCE with respect to the fixed multiplication. The existence of a solution for the KCE provides the existence of an FA. In this paper our aim is to find sufficient conditions on the multiplications under which the corresponding KCE has a solution. Mainly our conditions are given on the algebra of cubic matrices (ACM) considered with respect to a fixed multiplication of cubic matrices. Under some assumptions on the ACM (e.g. power associative, unital, associative, commutative) we describe a wide class of FAs, which contain algebras of arbitrary finite dimension. In particular, adapting the theory of continuous-time Markov processes, we construct a class of FAs given by the matrix exponent of cubic matrices. Moreover, we remarkably extend the set of FAs given with respect to the Maksimov's multiplications of our previous paper (J. Algebra 470 (2017) 263--288). For several FAs we study the time-dependent behavior (dynamics) of the algebras. We derive a system of differential equations for FAs.

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