Splitting density for lifting about discrete groups

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概要

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• We study splitting densities of primitive elements of a discrete subgroup of a connected non-compact semisimple Lie group of real rank one with finite center in another larger such discrete subgroup. When the corresponding cover of such a locally symmetric negatively curved Riemannian manifold is regular, the densities can be easily obtained from the results due to Sarnak or Sunada. Our main interest is a case where the covering is not necessarily regular. Specifically, for the case of the modular group and its congruence subgroups, we determine the splitting densities explicitly. As an application, we study analytic properties of the zeta function defined by the Euler product over elements consisting of all primitive elements which satisfy a certain splitting law for a given lifting.

• 東北大学の論文

著者

• Wakayama Masato

  Faculty Of Mathematics Kyushu University

• Hashimoto Yasufumi

  Graduate School of Mathematics, Kyushu University

• Hashimoto Yasufumi

  Graduate School Of Mathematics Kyushu University

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