Characteristic Classes of Singular Varieties -- Lectures on the Geometry of Flag Varieties -- Combinatorial K-theory -- Morse Functions and Cohomology of Homogeneous Spaces -- Integrable Systems and Gromov-Witten Theory -- Multiplying Schubert Classes -- Lectures on Characteristic Classes of Constructible Functions -- Algebraic K-theory of Schemes -- Gromov-Witten Invariants and Quantum Cohomol…