General concepts and methods that occur throughout mathematics – and now also in theoretical computer science – are the subject of this book. It is a thorou

Relational structures abound in our daily environment: relational databases, data mining, scaling procedures, preference relations, etc. As the documentation of

This book constitutes the thoroughly refereed joint postproceedings of the 7th International Seminar on Relational Methods in Computer Science and the 2nd Inter

This textbook provides a first introduction to category theory, a powerful framework and tool for understanding mathematical structures. Designed for students w