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Strings of group endomorphisms
Published 27 Jun 2010 in math.GR | (1006.5205v3)
Abstract: Recently the strings and the string number of self-maps were used in the computation of the algebraic entropy of special group endomorphisms. We introduce two special kinds of strings, and their relative string numbers. We show that a dichotomy holds for all these three string numbers; in fact, they admit only zero and infinity as values on group endomorphisms.
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