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Spherical and geodesic growth rates of right-angled Coxeter and Artin groups are Perron numbers

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 نشر من قبل Alexander Kolpakov
 تاريخ النشر 2018
  مجال البحث
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We prove that for any infinite right-angled Coxeter or Artin group, its spherical and geodesic growth rates (with respect to the standard generating set) either take values in the set of Perron numbers, or equal $1$. Also, we compute the average number of geodesics representing an element of given word length in such groups.



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