Robert MacPherson and arithmetic groups

Research paper by Paul E. Gunnells

Indexed on: 15 May '06Published on: 15 May '06Published in: Mathematics - Differential Geometry


We survey contributions of Robert MacPherson to the theory of arithmetic groups. There are two main areas we discuss: (i) explicit reduction theory for Siegel modular threefolds, and (ii) constructions of compactifications of locally symmetric spaces. The former is joint work with Mark McConnell, the latter with Lizhen Ji.