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Past events
Find information about past ANU MSI events.
Compactification of Lie Groups »
I will discuss compactifications of semisimple Lie groups, in particular SU(n) over the real and complex fields, as manifolds with corners.
Chebyshev polynomials, Lehmer numbers, and huge primes »
We consider the appearance of prime numbers in a family of linear recurrence sequences, labelled by a positive integer n.
Counting Sign Changes in the Prime Number Theorem »
Counting Sign Changes in the Prime Number Theorem
Lower bound of the Riesz transform kernel on Stratified Lie groups, commutators and applications »
The commutator of the Riesz transform (Hilbert transform in dimension 1) and a symbol $b$ is bounded on $L^2(\mathbb R^n)$ if and only if $b$ is in the BMO space BMO$(\mathbb R^n)$ (Coifman--Rochberg--Weiss). It is natural to ask whether it holds for commutator of Riesz transform on Heisenberg groups.
Honours Seminar »
First meeting of the Honours Seminar (25 minute talks)
Axially asymmetric traveling fronts in balanced bistable reaction-diffusion equations »
For a balanced bistable reaction-diffusion equation, an axisymmetric traveling front has been well known. We prove that an axially asymmetric traveling front with any positive speed does exist in a balanced bistable reaction-diffusion equation.
Honeycombs and polytopes: another look at representation theory »
After introducing several geometrical models that can be used to calculate multiplicities in Lie group theory, we describe associated polytopes whose volumes can be considered as approximations of those multiplicities.
Stacks, gerbes, and T-duality »
A brief introduction to stacks, bundle gerbes and their applications to T-dualities. Many examples will be presented so the talk should be accessible to anyone to some background in differential geometry and algebraic topology.
The marked length spectrum of Anosov manifolds »
We show some new rigidity result for the marked length spectrum of closed negatively curved manifolds.
