Seminar

Title: Implementing cryptography at scale 

Abstract: Many cryptographic primitives have rough edges which make them difficult to use properly (by both experts and non-experts).

Title: D. Bertsimas, I. Popescu - Optimal inequalities in probability theory: A convex optimization approach

Abstract: Abstract. We propose a semidefinite optimization approach to the problem of deriving tight moment

Title: Unitary groups over finite fields

Abstract: I will discuss the unitary groups over finite fields, and the structures on which they act (these include 2-designs and generalized quadrangles).

Title: Excluding claws in binary matroids

Abstract: A simple binary matroid is claw-free if no rank-3 flats are independent. We discuss an exact structure theorem for such matroids and sketch its proof. This is joint work with Peter Nelson.

Title: Data-driven Inverse Optimization with Imperfect Information

Abstract:

We continue our reading group with a paper by Kuhn et al with the same title as above.

Title: Morphisms of complex Hadamard matrices

Abstract:

Let M be a matrix with complex entries of unit norm. A well-known theorem of Hadamard bounds the magnitude of the determinant of M as a function of its dimension, and M is a complex Hadamard matrix if M meets Hadamard's bound with equality.

Title: A George Szekeres formula for restricted partitions

Abstract:

We give asymptotic formulas for the number of integer partitions of n with at most j parts and having largest part at most r, say A(n,j,r). We do this also for the number of partitions of n with largest part equal to  r and having exactly j parts, say C(n,j,r).

Title: What's an amplituhedron?

Abstract: 

I'll introduce the amplituhedron, focusing on why the suffix "hedron" is justified.

Title: Quantum State Transfer

Abstract:

Many quantum algorithms may be modeled as a quantum process occurring on a graph.  We interpret quantum channels implemented by spin chains as wires for transmission of states. 

Title: LWE Part 1: The problem, the cryptosystem and its relationship to lattice Problems

Abstract:

In this talk we will give an overview of the Learning With Errors problem,