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  • Dongsoo Shin, Deformations of Sandwiched Surface Singularities and the Semistable Minimal Model Program

    B266 IBS, Korea, Republic of
    Algebraic Geometry Seminar

         Speaker Dongsoo Shin Chungnam National Univ. A sandwiched surface singularity is a rational surface singularity that admits a birational map to the complex projective plane. de Jong and van Straten prove that deformations of sandwiched surface singularities are induced from special deformations of germs of plane curve singularities (called picture deformations). On the …

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  • Seminars on Algebraic Surfaces and Related Topics

    B236-1 IBS, Korea, Republic of
    Conferences and Workshops

         Schedule Feb. 27 N-resolutions Giancarlo Urzua (UC Chille) 13:30-14:20 Smooth Projective Surfaces with Pseudo-effective Tangent Bundles Guolei Zhong (IBS-CCG) 14:40-15:30 Nodal Surfaces and Cubic Discriminants Yonghwa Cho (IBS-CCG) 15:50-16:40 Lagrangian Fibration Structure on the Cotangent Bundle of a Del Pezzo Surface of Degree 4 Hosung Kim (IBS-CCG) 17:00-17:50 Dinner 18:20-20:00 Feb. 28 Deformations …

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  • Dongsoo Shin, Deformations of Sandwiched Surface Singularities and the Minimal Model Program

    B236-1 IBS, Korea, Republic of
    Algebraic Geometry Seminar

         Speaker Dongsoo Shin Chungnam National U. (This is a part of Seminars on Algebraic Surfaces and Related Topics.) We investigate the correspondence between three theories of deformations of rational surface singularities: de Jong and van Straten's picture deformations, Kollár's P-resolutions, and Pinkham's smoothings of negative weights. We provide an explicit method for obtaining, …

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