Foundations of higher dimensional category theory for graduate students and researchers in mathematics and mathematical physics.

Operads are mathematical devices which describe algebraic structures of many varieties and in various categories. From their beginnings in the 1960s, they have

A short introduction ideal for students learning category theory for the first time.

An array of general ideas useful in a wide variety of fields. Starting from the foundations, this book illuminates the concepts of category, functor, natural tr

The purpose of this book is to give background for those who would like to delve into some higher category theory. It is not a primer on higher category theory