談話会・数理科学講演会

過去の記録 ~05/02次回の予定今後の予定 05/03~

担当者 会田茂樹,大島芳樹,志甫淳(委員長),高田了
セミナーURL https://www.ms.u-tokyo.ac.jp/seminar/colloquium/index.html

2024年06月21日(金)

15:30-16:30   数理科学研究科棟(駒場) 大講義室(auditorium)号室
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Mircea Mustaţă 氏 (The University of Michigan)
The minimal exponent of hypersurface singularities (English)
[ 講演概要 ]
The log canonical threshold of a hypersurface is an invariant of singularities that plays an important role in birational geometry, but which arises in many other contexts and admits different characterizations. A refinement of this invariant is Saito's minimal exponent, whose definition relies on the theory of b-functions, an important concept in D-module theory. The new information (by comparison with the log canonical threshold) provides a numerical measure of rational singularities. In this talk I will give an introduction to minimal exponents, highlighting recent progress and open questions.
[ 参考URL ]
https://docs.google.com/forms/d/e/1FAIpQLSdUrEZYZ4fvi8So3pUVkxF08M2jbVdo7hTew_B1S5l-opFyzg/viewform?usp=sharing