MenuEvents for 04/05/2019 from all calendars
Working Seminar on Quantum Groups
Time: 10:30AM - 12:00PM
Location: BLOC 624
Speaker: John Weeks, TAMU
Title: Hopf algebras, continued
Mathematical Physics and Harmonic Analysis Seminar
Time: 1:50PM - 2:50PM
Location: BLOC 628
Speaker: Burak Hatinoglu, Texas A&M University
Title: Mixed Data in Inverse Spectral Problems for the Schroedinger Operators
Abstract: In this talk, we consider the Schroedinger operator, Lu = -u''+qu on (0,pi) with a potential q\in L^1(0,\pi). Borg's theorem says that q can be uniquely recovered from two spectra. By Marchenko, q can be uniquely recovered from spectral measure. After recalling some results from inverse spectral theory of one dimensional Schroedinger operators, we will discuss the following problem: Can q be recovered from support of spectral measure, which is a spectrum, and partial data on another spectrum and the set of pointmasses of the spectral measure?
Algebra and Combinatorics Seminar
Time: 3:00PM - 4:00PM
Location: BLOC 628
Title:
Student Working Seminar in Groups and Dynamics
Time: 3:00PM - 4:00PM
Location: BLOC 605AX
Speaker: James O'Quinn
Title: The Ornstein-Weiss Quasitower theorem and an application
Douglas Lectures
Time: 4:00PM - 5:00PM
Location: Blocker 220
Speaker: Vaughan Jones, Vanderbilt University
Title: Subfactors, quantum field theory, diffeomorphism groups and Thompson groups
Abstract: Doplicher Haag and Roberts showed how subfactors arise in quantum field theory. Their examples were not terribly interesting from the point of view of subfactors but that situation has dramatically reversed in the last 30 years with the consideration of low dimensional quantum field theories, especially with conformal symmetry. Indeed interesting subfactors can be constructed from Diff$(S^1)$ which appears, as a consequence of conformal symmetry, in one dimensional QFT. An attempt to construct these QFT’s directly from subfactors has given an interesting family of unitary representations of R. Thompson’s groups F and T.
