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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Pure Maths Colloquium: Geometric invariant theory over arbitrary fields

Presented by Ben Martin, University of Auckland

25 November 2013 16:00 in CM221

Geometric invariant theory is the study of algebraic groups
acting on algebraic varieties. If a reductive algebraic group G acts on
an affine variety V then one can form the quotient variety V//G. Points
of V//G correspond to closed G-orbits in V, so it is important to
understand the structure of the G-orbits. I will discuss some recent
work on G-orbits when the ground field is not algebraically closed.

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