Math 662: Seminar in Algebra Title: Symmetric Functions and Combinatorial Hopf Algebras Instructor: Frank Sottile Topics: The first half will cover the classical theory of Symmetric functions and symmetric polynomials, in particular the topics: Classical bases, including the Schur functions. Young Tableaux, Schensted insertion, Schutzenberger's jeux-de-taquin. Pieri and Littlewood-Richardson rules. The later part of the course will study quasi-symmetric funtions and their role in combinatorial enumeration, specifically P-partitions and combinatorial Hopf algebras. We will also study generalizations of Schur functions, such as Schup P- and Q- functions and Hall-littlewood functions, and other Hopf algebras such as non-commutative symmetric functions, the Malvenuto-Reutenauer Hopf algebra of permutations and the Loday-Ronco Hopf algebra of trees. Because the later material is not found in any book, I will not assign a text for the course, but point out the main sources for the classical material, which include: Chapter 7 of Stanley's "Enumerative Combinatorics, Volume 2", Chapter I of Macdonald's "Symmetric functions and Hall polynomials", and Chapter 4 (and part of chapter 3) of Sagan's "The Symmetric group". I will have extra copies of these books available for short-term loan. The prerequisite will be first semester of graduate algebra (but it would be good to be at least taking the second semester concurrently.)