PrerequisiteBasic algebraic topology and number theoryAbstractI will talk about the basics of cohomology of arithmetic groups focusing on Harder's new book. I will start from simplest cases of the group SL_2 over Z (which covers the chapter 2 and 3 of the book of Harder) and try to be as concrete as possible. The goal is to under these cohomology groups from the point of view of geometry and ar...
PrerequisiteComplex analysis in one variableAbstractThis is an undergraduate and first year graduate course on arithmetic of elliptic curves and modular forms with an eye toward generalizations for Calabi-Yau varieties, and in particular Calabi-Yau threefolds. The course will consist of two sub courses. The first one will be dedicated to many well-known topics related to elliptic curves and it ...