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.
By:
Stefan Witzel Imprint: Springer International Publishing AG Country of Publication: Switzerland Edition: 2014 ed. Volume: 2109 Dimensions:
Height: 235mm,
Width: 155mm,
Spine: 7mm
Weight: 2.117kg ISBN:9783319064765 ISBN 10: 3319064762 Series:Lecture Notes in Mathematics Pages: 113 Publication Date:28 July 2014 Audience:
Professional and scholarly
,
Undergraduate
Format:Paperback Publisher's Status: Active
Basic Definitions and Properties.- Finiteness Properties of G(Fq[t]).- Finiteness Properties of G(Fq[t; t-1]).- Affine Kac-Moody Groups.- Adding Places.