Seminar on Geometric Complex Analysis

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Date, time & place Monday 10:30 - 12:00 128Room #128 (Graduate School of Math. Sci. Bldg.)
Organizer(s) Kengo Hirachi, Shigeharu Takayama

2019/05/20

10:30-12:00   Room #128 (Graduate School of Math. Sci. Bldg.)
Tomohiro Okuma (Yamagata Univ.)
Cohomology and normal reduction numbers of normal surface singularities (Japanese)
[ Abstract ]
The normal reduction number of a normal surface singularity relates the maximal degree of the generators of associated graded algebra for certain line bundles on resolution spaces. We show fundamental properties of this invariant and formulas for some special cases. This talk is based on the joint work with Kei-ichi Watanabe and Ken-ichi Yoshida.