Titlebook: Topics in Cohomological Studies of Algebraic Varieties; Impanga Lecture Note Piotr Pragacz Book 2005 Birkh?user Basel 2005 Algebraic topolo

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Integrable Systems and Gromov-Witten Theory, self-contained introduction to integrable systems and matrix integrals, and their relation to Witten’s original conjecture (Kontsevich’s theorem). The paper ends with a brief discussion of further developments.

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Lectures on Characteristic Classes of Constructible Functions,Schürmann. These lectures discuss the calculus of characteristic classes associated with constructible functions on possibly singular varieties, and focus on the specialization properties. The point of view of characteristic classes of Lagrangian cycles is emphasized. A Verdier-type R.iemann-Roch theorem is discussed.

Ballerina

Multiplying Schubert Classes,We show how to compute the structure constants for cohomological multiplication of Schubert classes by exploiting the action of the Weyl group and that of BGG-operators, on the cohomology ring of a flag variety. We illustrate this method with simple proofs of the Chevalley and Pieri formulas.

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Piotr PragaczExpository treatment of the material.Contains results on intersection theory on flag varieties that have not been published before.Describes, for the first time in the literature of this type, the Ric

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