**An Invitation to Applied Category Theory: Seven Sketches in Compositionality by Brendan Fong, ISBN-13: 978-1108711821**

[PDF eBook eTextbook]

- Publisher: Cambridge University Press; 1st edition (August 29, 2019)
- Language: English
- 348 pages
- ISBN-10: 1108711820
- ISBN-13: 978-1108711821

* Category theory* reveals commonalities between structures of all sorts. This book shows its potential in science, engineering, and beyond.

Category theory is unmatched in its ability to organize and layer abstractions and to find commonalities between structures of all sorts. No longer the exclusive preserve of pure mathematicians, it is now proving itself to be a powerful tool in science, informatics, and industry. By facilitating communication between communities and building rigorous bridges between disparate worlds, applied category theory has the potential to be a major organizing force. This book offers a self-contained tour of applied category theory. Each chapter follows a single thread motivated by a real-world application and discussed with category-theoretic tools. We see data migration as an adjoint functor, electrical circuits in terms of monoidal categories and operads, and collaborative design via enriched profunctors. All the relevant category theory, from simple to sophisticated, is introduced in an accessible way with many examples and exercises, making this an ideal guide even for those without experience of university-level * mathematics*.

* Brendan Fong* is a postdoctoral associate in the Department of Mathematics at the

*. His research explores how we use pictures to represent and reason about the systems around us, and how to understand the world from a relational point of view. These topics find their intersection in applied category theory.*

**Massachusetts Institute of Technology*** David I. Spivak* is a research scientist in the Department of Mathematics at the Massachusetts Institute of Technology. He has found applications of category theory ranging from database integration to knowledge representation, from materials science to dynamical systems and behaviour. He is the author of two other books in category theory.

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