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arXiv 1409.3756math.GR
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关于有限群自同态的动力学

On the dynamics of endomorphisms of finite groups

Alexander Bors

摘要:

为了更好地理解作为有限动力系统的有限群,我们利用群的Fitting引理证明了有限群的自同态的每个状态空间是有限有向$1$ -树的图张量积,该树的圈是具有不交并圈的圈,推广了Hernánest-Toledo关于线性有限动力系统的结果,通过“分歧行为”充分刻画了幂零自同态的状态空间的可能形式。最后,作为应用,我们在一般情况下计算了有限循环群的自同态的状态空间的同构类型,推广了Hernánove-Toledo关于奇阶准素循环群的结果.

英文摘要:

Aiming at a better understanding of finite groups as finite dynamical systems, we show that by a version of Fitting's Lemma for groups, each state space of an endomorphism of a finite group is a graph tensor product of a finite directed $1$-tree whose cycle is a loop with a disjoint union of cycles, generalizing results of Hernández-Toledo on linear finite dynamical systems, and we fully characterize the possible forms of state spaces of nilpotent endomorphisms via their "ramification behavior". Finally, as an application, we will count the isomorphism types of state spaces of endomorphisms of finite cyclic groups in general, extending results of Hernández-Toledo on primary cyclic groups of odd order.

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