Elementary Differential Singularities of Three-Dimensional Nijenhuis Operators

IF 1.7 3区物理与天体物理 Q2 PHYSICS, MATHEMATICAL

Russian Journal of Mathematical Physics Pub Date : 2023-12-25 DOI:10.1134/S1061920823040015

D. Akpan, A. Oshemkov

引用次数: 0

Abstract

In the paper, three-dimensional Nijenhuis operators are studied that have differential singularities, i.e., such points at which the coefficients of the characteristic polynomials are dependent. The case is studied in which the differentials of all invariants of the Nijenhuis operator are proportional, as well as the case when two invariants are functionally independent and the third defines a fold-type singularity. In particular, new examples of three-dimensional Nijenhuis operators with singularities of the specified type are constructed.

DOI 10.1134/S1061920823040015

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三维尼延胡斯算子的初等微分奇异性

摘要本文研究了具有微分奇点的三维尼延胡斯算子，即特征多项式系数相关的点。本文研究了尼延胡斯算子所有不变式的微分都成比例的情况，以及两个不变式在函数上是独立的，而第三个不变式定义了折叠型奇点的情况。特别是，我们构建了具有指定类型奇点的三维尼延胡斯算子的新实例。 doi 10.1134/s1061920823040015

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Mathematical Physics 物理-物理：数学物理

CiteScore

3.10

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Russian Journal of Mathematical Physics is a peer-reviewed periodical that deals with the full range of topics subsumed by that discipline, which lies at the foundation of much of contemporary science. Thus, in addition to mathematical physics per se, the journal coverage includes, but is not limited to, functional analysis, linear and nonlinear partial differential equations, algebras, quantization, quantum field theory, modern differential and algebraic geometry and topology, representations of Lie groups, calculus of variations, asymptotic methods, random process theory, dynamical systems, and control theory.