Finiteness Properties of Arithmetic Groups Acting on Twin Buildings

Finiteness Properties of Arithmetic Groups Acting on Twin Buildings
ISBN-10
3319064770
ISBN-13
9783319064772
Category
Mathematics
Pages
113
Language
English
Published
2014-07-16
Publisher
Springer
Author
Stefan Witzel

Description

Providing an accessible approach to a special case of the Rank Theorem, the present text considers the exact finiteness properties of S-arithmetic subgroups of split reductive groups in positive characteristic when S contains only two places. While the proof of the general Rank Theorem uses an involved reduction theory due to Harder, by imposing the restrictions that the group is split and that S has only two places, one can instead make use of the theory of twin buildings.

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