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X-WR-CALNAME:Center for Complex Geometry
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TZID:Asia/Seoul
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TZOFFSETFROM:+0900
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Seoul:20250911T160000
DTEND;TZID=Asia/Seoul:20250911T170000
DTSTAMP:20260501T003843
CREATED:20250811T074515Z
LAST-MODIFIED:20250811T075048Z
UID:4009-1757606400-1757610000@ccg.ibs.re.kr
SUMMARY:Yong Hu\, Moduli spaces of threefolds on the Noether line
DESCRIPTION:    Speaker\n\n\nYong Hu\nShanghai Jiao Tong University\n\n\n\n\n\n\nIn this talk\, we will introduce the 3-dimensional Noether inequality and completely classify the canonical threefolds on the Noether line with $p_g \ge 5$ by studying their moduli spaces. For every such moduli space\, we establish an explicit stratification\, estimate the number of its irreducible components and prove the dimension formula. A new and unexpected phenomenon is that the number of irreducible components grows linearly with the geometric genus\, while the moduli space of canonical surfaces on the Noether line with any prescribed geometric genus has at most two irreducible components of the same dimension. This is a joint work with S.Coughlan\, R.Pignatelli and T.Zhang.
URL:https://ccg.ibs.re.kr/event/2025-0911-2/
LOCATION:B236-1\, IBS\, Korea\, Republic of
CATEGORIES:Complex Geometry Seminar
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