排序方式: 共有49条查询结果,搜索用时 15 毫秒
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Peter Fleischmann Ingo Janiszczak 《Applicable Algebra in Engineering, Communication and Computing》1996,7(3):221-234
In this paper an algorithm is presented to determine the number of semisimple conjugacy classes for a given centralizertype for the Chevalley groupsSL
n(q) andSU
n(q). Moreover we give the exact number of regular semisimple classes of this groups and a summary of results on the generic classnumber of exceptional Chevalley groups of adjoint type.The first author acknowledges financial support by a grant of the Deutsche Forschungsgemeinschaft 相似文献
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Kengo Matsumoto 《Dynamical Systems: An International Journal》2017,32(3):423-459
λ-Graph systems are labelled Bratteli diagrams with shift operations. They present subshifts. Their matrix presentations are called symbolic matrix systems. We define skew products of λ-graph systems and study extensions of subshifts by finite groups. We prove that two canonical symbolic matrix systems are G-strong shift equivalent if and only if their presented subshifts are G-conjugate. 相似文献
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Pedro J. Catuogno Diego Sebastian Ledesma 《Dynamical Systems: An International Journal》2008,23(4):425-435
We introduce a concept of relative rotation number to unify many different approaches of rotation number in non-linear dynamical systems. We present an ergodic result of existence a.s. for stochastic systems. In higher dimension, we show that the natural idea of projecting into a plane does work well a.s. for any plane (different from deterministic systems where projections may be degenerate). A number of further properties (invariance by homotopy and by conjugacy) and applications are presented. 相似文献
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基于有限变形理论的ANSYS几何非线性算法缺陷分析 总被引:1,自引:0,他引:1
基于有限变形理论对ANSYS定义的应变、应力与物体真实应力之间的关系、位形、不平衡力的几何非线性计算等方面进行了详细分析,并针对ANSYS中的杆件单元Link8和平面单元Plane42,通过算例计算结果与理论解的对比,指出了ANSYS几何非线性算法的不足,即在计算过程中没有考虑到应变、应力的共轭关系,只是一种近似的非线性计算。 相似文献
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Victor Ayala Fritz Colonius Wolfgang Kliemann 《Journal of Dynamical and Control Systems》2007,13(3):337-362
This paper classifies continuous linear flows using concepts and techniques from topological dynamics. Specifically, the concepts
of equivalence and conjugacy are adapted to flows on vector bundles, and the Lyapunov decomposition is characterized using
the induced flows on the Grassmann and the flag bundles. These results are then applied to bilinear control systems, for which
their behavior in , on the projective space , and on the Grassmannians is characterized.
This research was partially supported by Proyecto FONDECYT No. 1060981 and Proyecto FONDECYT de Incentivo a la Cooperación
Internacional No. 7020439. 相似文献
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Abdelhamid Adouani 《Dynamical Systems: An International Journal》2012,27(2):169-186
We give a characterization of piecewise C 1 class P-homeomorphism f of the circle with irrational rotation number and finitely many break points which is piecewise C 1 conjugate to a C 1-diffeomorphism. The following properties are equivalent:
?(i)?f is conjugate to a C 1-diffeomorphism of the circle by a piecewise C 1-homeomorphism. (ii)?The product of jumps of f in the break points contained in a same orbit is trivial. (iii)?f is conjugate to a C 1-diffeomorphism of the circle by a piecewise linear (PL)-homeomorphism or a piecewise quadratic homeomorphism.
For a PL-homeomorphism f having the property (ii): f is conjugate to a rotation either by a PL-homeomorphism or by a piecewise analytic homeomorphism. 相似文献
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In this paper, we study the smooth classifications of germs of diffeomorphisms near a hyperbolic fixed point based on the smooth moduli-free polynomial normal forms of the corresponding diffeomorphisms and give the following result. On , n ≤ 5, with two kinds of exceptions, any two hyperbolic germs of diffeomorphisms with generic nonlinear parts are at least C 1 conjugated if and only if their linear parts are similar. 相似文献
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