Algebraic Geometry Seminar
Seminar information archive ~02/06|Next seminar|Future seminars 02/07~
Date, time & place | Friday 13:30 - 15:00 ハイブリッド開催/117Room #ハイブリッド開催/117 (Graduate School of Math. Sci. Bldg.) |
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Organizer(s) | GONGYO Yoshinori, NAKAMURA Yusuke, TANAKA Hiromu |
2017/07/18
15:30-17:00 Room #122 (Graduate School of Math. Sci. Bldg.)
Fuetaro Yobuko (Tohoku University)
On a generalization of Frobenius-splitting and a lifting problem of Calabi-Yau varieties (JAPANESE)
Fuetaro Yobuko (Tohoku University)
On a generalization of Frobenius-splitting and a lifting problem of Calabi-Yau varieties (JAPANESE)
[ Abstract ]
In this talk, we introduce a notion of Frobenius-splitting height which quantifies Frobenius-splitting varieties and show that a Calabi-Yau variety of finite height over an algebraically closed field of positive characteristic admits a flat lifting to the ring of Witt vectors of length two.
In this talk, we introduce a notion of Frobenius-splitting height which quantifies Frobenius-splitting varieties and show that a Calabi-Yau variety of finite height over an algebraically closed field of positive characteristic admits a flat lifting to the ring of Witt vectors of length two.