Commutative Algebra and Algebraic Geometry: The Fellowship of the Ring: The excess intersection formula

Seminar | February 27 | 5-6 p.m. | 939 Evans Hall

 Ritvik Ramkumar, UC Berkeley

 Department of Mathematics

We will give examples of situations where intersections do not have the expected codimension. We will describe the excess intersection formula which allows us to compute the portion of the intersection that has the expected codimension. Time permitting, we will compute the Chow ring of a blowups along smooth subschemes.