This book develops a new theory of multi-parameter singular integrals
associated with Carnot-Carathéodory balls. Brian Street first details
the classical theory of Calderón-Zygmund singular integrals and
applications to linear partial differential equations. He then outlines
the theory of multi-parameter Carnot-Carathéodory geometry, where the
main tool is a quantitative version of the classical theorem of
Frobenius. Street then gives several examples of multi-parameter
singular integrals arising naturally in various problems. The final
chapter of the book develops a general theory of singular integrals that
generalizes and unifies these examples. This is one of the first general
theories of multi-parameter singular integrals that goes beyond the
product theory of singular integrals and their analogs. Multi-parameter
Singular Integrals will interest graduate students and researchers
working in singular integrals and related fields.