"The subject of these notes is the character variety of representations of a surface group in a Lie group. We emphasize the various points of view (combinatoria

The subject of these notes is the character variety of representations of a surface group in a Lie group. The author emphasizes the various points of view (comb

K3 surfaces are central objects in modern algebraic geometry. This book examines this important class of Calabi–Yau manifolds from various perspectives in eig

Progress in low-dimensional topology has been very quick in the last three decades, leading to the solutions of many difficult problems. Among the earlier highl

This text presents six mini-courses, all devoted to interactions between representation theory of algebras, homological algebra, and the new ever-expanding theo