Torsors, also known as principal bundles or principal homogeneous spaces, are ubiquitous in mathematics. The purpose of this book is to present expository lectu

Lecture notes and research articles on the use of torsors and etale homotopy in algebraic and arithmetic geometry.

Lecture notes and research articles on the use of torsors and étale homotopy in algebraic and arithmetic geometry.

This book provides a largely self-contained introduction to Cox rings and their applications in algebraic and arithmetic geometry.

This is Part 2 of a two-volume set. Since Oscar Zariski organized a meeting in 1954, there has been a major algebraic geometry meeting every decade: Woods Hole