Blowing Up SchemesStudent-Run Algebraic Geometry Seminar
|Speaker:||Xiang He, UC Davis|
|Start time:||Wed, Nov 12 2014, 4:10PM|
We define the Proj of a graded sheaf of algebras over a scheme X, and we give two important examples, namely the projective bundle associated with a locally free sheaf, and the definition of blowing up with respect to a coherent sheaf of ideals. cf. Hartshorne “Algebraic Geometry” Chapter II section 7.