This textbook arises from a master's course taught by the author at the University of Coimbra. It...

A Handbook of Categorical Algebra, in three volumes, is a detailed account of everything a mathem...

Develops Galois theory in a more general context, emphasizing category theory.

Categorical algebra and its applications contain several fundamental papers on general category t...

Focusing methodologically on those historical aspects that are relevant to supporting intuition i...

This book presents the classical theory of curves in the plane and three-dimensional space, and t...

Develops Galois theory in a more general context, emphasizing category theory.

Third in a three part set, this volume introduces topos theory and the idea of sheaves.

The second volume, which assumes familiarity with the material in the first, introduces important...

Focusing methodologically on those historical aspects that are relevant to supporting intuition i...

This is a unified treatment of the various algebraic approaches to geometric spaces. The study of...

Second in a three part set, this volume introduces important classes of categories (abelian, mona...