Categories, homological algebra, sheaves and their cohomology furnish useful methods for attacking problems in a variety of mathematical fields. This textbook p

The landscape of homological algebra has evolved over the last half-century into a fundamental tool for the working mathematician. This book provides a unified

Homological algebra first arose as a language for describing topological prospects of geometrical objects. As with every successful language it quickly expanded

On its original publication, this algebraic introduction to Grothendieck's local cohomology theory was the first book devoted solely to the topic and it has sin

Constructible and perverse sheaves are the algebraic counterpart of the decomposition of a singular space into smooth manifolds. This introduction to the subjec