Events for November 3, 2017 from General and Seminar calendars

Probability Seminar

Time: 10:00AM - 4:00PM

Location: BLOC 220

Title: UT Austin - TAMU probability day

Working Seminar on Quantum Computation and Quantum Information

Time: 10:30AM - 11:30PM

Location: BLOC 628

Speaker: Ken Dykema, TAMU

Title: Synchronous correlation matrices and Connes' Embedding Problem.

Abstract: We show that Connes' Embedding Problem is equivalent to the question regarding synchornous quantum correlations, of whether the closure of $C_q^s(n,k)$ equals $C_{qc}^s(n,k)$ for all $n$ and $k$. The proof goes, in one direction, using Kirchberg's unitary moment approximation condition and in the other by use of matricial microstates to construct finite dimensional representatios. (Joint work with Vern Paulsen).

Geometry Seminar

Time: 4:00PM - 5:00PM

Location: BLOC 628

Speaker: John Calabrese, Rice University

Title: Comparison Formulae for Donaldson-Thomas Invariants

Abstract: Donaldson-Thomas numbers are virtual enumerative invariants attached to Calabi-Yau threefolds. I will begin the talk to provide some intuition for these, in the context of curve-counting. I will then discuss a few comparison formulae.