Symposium in Honor of C. H. Clemens.

Intro -- Contents -- Preface. Herb Clemens -- Orthogonal complex hyperbolic arrangements -- Sketches of KdV -- Vector bundles on the cubic threefold -- Using symmetry to count rational curves -- Exceptional groups and del Pezzo surfaces -- The regulator map for a general curve -- Versal deformations and superpotentials for rational curves in smooth threefolds -- The Nash conjecture for nonprojective threefolds -- 1. Introduction -- 2. Surgery on Three Dimensional Manifolds -- 3. Flops -- 4. Algebraic approximation of Möbius bands -- 5. Algebraic realization of topological flops -- 6. Torus bundles -- References -- Bounds and Q-Gorenstein smoothings of smoothable stable log surfaces -- The integral of powers of a function -- On semipositivity of sheaves of differential operators and the degree of a unipolar Q-Fano variety -- Stringy geometry and topology of orbifolds -- The Prym Torelli problem: an update and a reformulation as a question in birational geometry -- 0. Introduction. -- 1. The Prym Torelli problem and Donagi's conjecture. -- 2. The "base locus of quadrics" method for Jacobians. -- 3. The base locus of quadrics method for Prym varieties. -- 4. Andreotti's approach to Torelli via Gauss maps. -- 5. Andreotti's birational formulation of Torelli. -- References -- On the punctual Hilbert scheme of a symplectic fourfold.

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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2024. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.