演講者：秋山茂樹 教授

　　　　Institute of Mathematics, University of Tsukuba　　　

日　期：2016年9月14日（星期三） 15:00

地　點：國立高雄大學理學院408室

講　題：A construction of non Parry numbers

摘　要：

Beta expansion generalizes decimal or binary expansion to a arbitrary real number base. When the corresponding symbolic system is sofic, we call such a base Parry number. Parry numbers are algebraic integers having specific distribution of conjugates. A question is whether such distribution characterizes Parry numbers among algebraic integers. The answer is known to be negative, and we can construct a large family of non Parry numbers whose distribution is exactly the same as Parry numbers.