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INFO SHEET QUEEN’S UNIVERSITY AT KINGSTON Department of Mathematics and Statistics http://www.mast.queensu.ca October 6, 2015 CALENDAR Wednesday, October 7 Thursday, October 8 Department Meeting Time: 3:30 p.m. Place: Jeffery 234 Seminar on Free Probability and Random Matrices Friday, October 9 Time: 4:30 p.m. Place: Jeffery 110 (to be confirmed) Number Theory Seminar Monday, October 12 Time: 11:00 a.m. Place: Jeffery 422 Thanksgiving Day Tuesday, October 20 Conference Room Time: 1:00 p.m. Place: Jeffery 521 Presentation by Dr. Brenda Bouwer, Vice Provost and Dean, School of Graduate Studies. Department meeting will follow if time permits. Speaker: Mario Diaz, Queen’s University Title: On the Speed at which Asymptotic Liberation Sequences Deliver Freeness Abstract Attached Speaker: Arunabha Biswas, Queen’s University Title: Some aspects of higher Mahler measure Abstract Attached University offices are closed. Ph.D. Student: Joshua Pohlkamp-Hartt Title: Learning Methods for Spectrum Estimation Supervisors: G. Takahara & D. Thomson Items for the Info Sheet should reach Anne ([email protected]) by noon on Monday. The Info Sheet is published every Tuesday. Thursday, October 8, 4:30 p.m. Jeffery 110 Seminar on Free Probability and Random Matrices Speaker: Mario Diaz Title: On the Speed at which Asymptotic Liberation Sequences Deliver Freeness Abstract: It is well known that certain ensembles of unitary matrices deliver asymptotic freeness under suitable conditions. Related to the intuitive question about how random an ensemble must be in order to deliver freeness, Anderson and Farrell found a unitary ensemble which is “less random” than the Haar distributed ensemble originally proposed by Voiculescu. In this talk we propose to study the speed at which these ensembles deliver freeness as an alternative measure of “randomness”. This is joint work with Jamie Mingo. Seminar website: http://www.mast.queensu.ca/~mingo/seminar/ Friday, October 9, 11:00 a.m. Jeffery 422 Speaker: Arunabha Biswas Title: Some aspects of higher Mahler measure Number Theory Seminar Abstract: We consider the k-higher Mahler measure m_k(P) of a Laurent polynomial P as the integral of (log|P|)^k over the complex unit circle. In this talk I shall briefly discuss Mahler measure and Lehmer's conjecture; and elaborately discuss some results about higher Mahler measure.