This unique book is devoted to the detailed study of the recently
discovered commutative C*-algebras of Toeplitz operators on the Bergman
space over the unit disk. Surprisingly, the key point to understanding
their structure and classifying them lies in the hyperbolic geometry of
the unit disk. The book develops a number of important problems whose
successful solution was made possible and is based on the specific
features of the Toeplitz operators from these commutative algebras.