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math.NT2019★ 1 cited
Digital semigroups
Horst Brunotte
The well-known expansion of rational integers in an arbitrary integer base different from is exploited to study relations between numerical monoids and certain subsemigr…
math.NT2015★ 1 cited
Salem numbers from a class of star-like trees
Horst Brunotte, Jörg Thuswaldner
We study the Coxeter polynomials associated with certain star-like trees. In particular, we exhibit large Salem factors of these polynomials and give convergence properties of thei…