Nov 29 2021

Algebraic Geometry Seminar: Quotient singularities in positive characteristic, by Christian Liedtke

November 29, 2021

2:00 PM - 2:50 PM




Chicago, IL

Christian Liedtke (Technical University Munich): Quotient singularities in positive characteristic

We study isolated quotient singularities by finite group schemes in positive characteristic. We compute invariants, study the uniqueness of the quotient presentation, and compute some deformation spaces. A special emphasis is laid on the dichotomy between quotient singularities by linearly reductive group schemes and by group schemes that are not linearly reductive. We essentially classify the linearly reductive ones, give applications, and make some conjectures. This is joint work with Gebhard Martin (Bonn) and Yuya Matsumoto (Tokyo).

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Kevin Tucker

Date posted

Oct 24, 2021

Date updated

Oct 24, 2021


Christian Liedtke | (Technical University Munich)