Monthly Archives: April 2009

Quaternion Algebras and Modular Forms

Posted on April 22, 2009 by Jim Stankewicz

Dear readers, I know I promised a post  on modular curves, but I had to devote more time to my end of semester project. Since it’s strongly related to the topic of modular curves and I present on it tomorrow, … Continue reading →

Posted in Talks | 4 Comments

Pieri and Giambelli Formulas

Posted on April 20, 2009 by Charles Siegel

It’s been a few weeks, but now I’m back and today we’ll talk about the multiplication in the cohomology ring of Grassmannians.  Though we won’t talk about the Littlewood-Richardson rule in its full glory, we will howver discuss the special … Continue reading →

Posted in Algebraic Geometry, Algebraic Topology, Cohomology, Combinatorics, Computational Methods, Enumerative Geometry, Intersection Theory, Uncategorized | 1 Comment

The Grothendieck-Riemann-Roch Theorem, Stated

Posted on April 5, 2009 by Matt DeLand

Suppose you have a proper map between smooth (quasi) projective varieties.  Then suppose you have a coherent sheaf on .  After viewing that sheaf as an element of the Grothendieck Group of coherent sheaves on , there are two things … Continue reading →

Posted in Algebraic Geometry, Big Theorems, Cohomology, Intersection Theory | 6 Comments