论文标题

代数熵的添加性,用于本地有限基团的有限亚组

Additivity of the algebraic entropy for locally finite groups with permutable finite subgroups

论文作者

Bruno, Anna Giordano, Salizzoni, Flavio

论文摘要

众所周知,相对于精确序列的添加性是组内态代数熵的基本​​特性。通过深入利用其结构,这证明了阿伯利亚群体的证明。另一方面,最近发现了一个可解决的反例,表明它一般不存在。然而,我们为Quasihamiltonian或FC组的本地有限群体的代数熵的添加性提供了相当简短的证明。

The additivity with respect to exact sequences is notoriously a fundamental property of the algebraic entropy of group endomorphisms. It was proved for abelian groups by deeply exploiting their structure. On the other hand, a solvable counterexample was recently found, showing that it does not hold in general. Nevertheless, we give a rather short proof of the additivity of the algebraic entropy for locally finite groups that are either quasihamiltonian or FC-groups.

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