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X-WR-CALDESC:Events for Center for Complex Geometry
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TZID:Asia/Seoul
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TZOFFSETFROM:+0900
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DTSTART:20220101T000000
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DTSTART;TZID=Asia/Seoul:20230126T160000
DTEND;TZID=Asia/Seoul:20230126T170000
DTSTAMP:20260419T001319
CREATED:20221219T040137Z
LAST-MODIFIED:20221229T014257Z
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SUMMARY:Kangjin Han\, Secant variety and its singularity I
DESCRIPTION:     Speaker\n\n\nKangjin Han\nDGIST\n\n\n\n\n\n\nSecant variety (or more generally Join) construction is one of the main methods to construct a new geometric object from the original one in classical algebraic geometry. In this series of talks\, we first consider some general facts on secant varieties and then focus on a specific topic\, i.e. singularity of secants. For this purpose\, we review some basic facts and known results in the literature and present some ideas to show (non-)singularity of points in the given secant. We also report a recent work with K. Furukawa on the singular loci of higher secant of Veronese varieties and others. The talks cover such topics as Terracini lemma\, identifiability\, tangential k-contact locus from geometric side and apolar ideal and defining equations via a Young flattening and so on from algebraic side.
URL:https://ccg.ibs.re.kr/event/2023-01-26/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20230127T103000
DTEND;TZID=Asia/Seoul:20230127T113000
DTSTAMP:20260419T001319
CREATED:20221219T040333Z
LAST-MODIFIED:20221229T014331Z
UID:1917-1674815400-1674819000@ccg.ibs.re.kr
SUMMARY:Kangjin Han\, Secant variety and its singularity II
DESCRIPTION:     Speaker\n\n\nKangjin Han\nDGIST\n\n\n\n\n\n\nSecant variety (or more generally Join) construction is one of the main methods to construct a new geometric object from the original one in classical algebraic geometry. In this series of talks\, we first consider some general facts on secant varieties and then focus on a specific topic\, i.e. singularity of secants. For this purpose\, we review some basic facts and known results in the literature and present some ideas to show (non-)singularity of points in the given secant. We also report a recent work with K. Furukawa on the singular loci of higher secant of Veronese varieties and others. The talks cover such topics as Terracini lemma\, identifiability\, tangential k-contact locus from geometric side and apolar ideal and defining equations via a Young flattening and so on from algebraic side.
URL:https://ccg.ibs.re.kr/event/2023-01-27/
LOCATION:B266\, IBS\, Korea\, Republic of
CATEGORIES:Algebraic Geometry Seminar
END:VEVENT
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