Decomposition theorem of Beilinson, Bernstein and Deligne

In mathematics, especially algebraic geometry, the decomposition theorem of Beilinson, Bernstein and Deligne or BBD decomposition theorem is a set of results concerning the cohomology of algebraic varieties. It was originally conjectured by Gelfand and MacPherson.[1]

  1. ^ Conjecture 2.10. of Sergei Gelfand & Robert MacPherson, Verma modules and Schubert cells: A dictionary.