description:
The goal of this course is to study the most recent advances in enumeration of integer points in polyhedra. We will start from basic definitions relating to polyhedra, and then after developing the theories of the algebra of polyhedra and the idea of valuation, we describe algorithms that count the number of integer points in rational polytopes.
This reading course will be based on Barvinok's new book "Integer points in polyhedra". Below is the table of contents
Chapter 1: Introduction
Chapter 2: The algebra of polyhedra
Chapter 3: Linear transformations and polyhedra
Chapter 4: The structure of polyhedra
Chapter 5: Polarity
Chapter 6: Tangent cones. Decompositions modulo polyhedra with lines
Chapter 7: Open polyhedra
Chapter 8: The exponential valuation
Chapter 9: Computing volumes
Chapter 10: Lattices, bases, and parallelepipeds
Chapter 11: The Minkowski Convex Body Theorem
Chapter 12: Reduced basis
Chapter 13: Exponential sums and generating functions
Chapter 14: Totally unimodular polytopes
Chapter 15: Decomposing a 2-dimensional cone into unimodular cones via continued fractions
Chapter 16: Decomposing a rational cone of an arbitrary dimension into unimodular cones
Chapter 17: Efficient counting of integer points in rational polytopes
Chapter 18: The polynomial behavior of the number of integer points in polytopes
Chapter 19: A valuation on rational cones
Chapter 20: A "local" formula for the number of integer points in a polytope
Our plan is to have 9 lectures to go through this book: 3 lectures for Chapters 1--7, then single lectures covering Chapters 8--9, Chapters 10--12, Chapters 13--14, Chapters 15--16, Chapters 17--18, and Chapters 19--20. I did not plan a lecture on the week of April 27 since I won't be around, but if we are behind schedule by then, we will add one extra lecture at that week.
schedule:
3/30: Fu
4/6: Brandon
4/13: Josh
4/20: Matt
4/27: (no lectures)
5/4: Robert
5/11: Jianqiu
5/18: Jesus
5/27 (Wednesday): Matthias
6/1: Fu