In this book the author illustrates the power of the theory of subcartesian differential spaces for investigating spaces with singularities. Part I gives a deta

A complete presentation of the theory of differential spaces, with applications to the study of singularities in systems with symmetry.

A complete presentation of the theory of differential spaces, with applications to the study of singularities in systems with symmetry.

Arithmetic groups are generalisations, to the setting of algebraic groups over a global field, of the subgroups of finite index in the general linear group with

The first expository book-length introduction to intersection homology from the viewpoint of singular and piecewise linear chains.