**Toposes, Triples and Theories**

by Michael Barr, Charles Wells

**Publisher**: Springer-Verlag 2005**ISBN/ASIN**: 0387961151**ISBN-13**: 9780387961156**Number of pages**: 302

**Description**:

As its title suggests, this book is an introduction to three ideas and the connections between them. Chapter 1 is an introduction to category theory which develops the basic constructions in categories needed for the rest of the book. Chapters 2, 3 and 4 introduce each of the three topics of the title and develop them independently up to a certain point. We assume that the reader is familiar with concepts typically developed in first-year graduate courses, such as group, ring, topological space, and so on.

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