This dissertation is concerned with calculating the group of degree three cohomological invariants of a reductive group over a eld of arbitrary characteristic.
The notion of a motive is an elusive one, like its namesake "the motif" of Cezanne's impressionist method of painting. Its existence was first suggested by Grot
Group cohomology reveals a deep relationship between algebra and topology, and its recent applications have provided important insights into the Hodge conjectur
This volume contains the proceedings of the 2015 Clifford Lectures on Algebraic Groups: Structures and Actions, held from March 2–5, 2015, at Tulane Universit
The cohomology of groups has, since its beginnings in the 1920s and 1930s, been the stage for significant interaction between algebra and topology and has led t