A First Course in Category Theory

“This book is a basic introduction to category theory at an undergraduate level, aimed at facilitating and making as accessible as possible the learning of the main notions, problems, ideas and techniques of the theory to any student or researcher without background in the field. … Each chapter is accompanied by a final section of recapitulation exercises, many of which are solved at the end of the book, and which offer a good test for students.” (Federico Giovanni Infusino, Mathematical Reviews, October, 2024)