BGU Math | BGU Probability and Ergodic Theory (PET) seminar

The seminar meets on Thursdays, 11:10-12:00, in -101

This Week

Date	Title	Speaker	Abstract
Apr 24	TBA	Nadav Kalma (BGU)	TBA
May 8	TBA	Shlomo Hoory (Tel-Hai College)	TBA
May 15	TBA	Yotam Shomroni (TAU)	TBA
May 22	A New Look at the Table-Maker’s Dilemma	Jonathan Devor	TBA
Jun 5	TBA	Gady Kozma (Weizmann Institute)	TBA

Date	Title	Speaker	Abstract
Mar 20	Multi-fractal spectrum of planar harmonic measures	Adi Glücksam (HUJI)	We will begin with defining the concepts of harmonic measure and different notions of dimensions. We will then connect those notions with what is called multi-fractal spectrum. Next, we will discuss finer features of the relationship between those dimensions. Lastly, we will define the universal counterparts and discuss an approximation theorem, showing the importance of domains arising from multifractal formalism. This is a developing story, based on a joint work with I. Binder.
Mar 27	Primitivity Testing in Free Group Algebras via Duality	Matan Seidel (TAU)	Let F be a free group and K a field. The free group algebra K[F] bears a strong resemblance to F, making it an excellent tool in the study of free groups. For example, by a theorem due to Cohn and Lewin, one-sided ideals in K[F] are free as K[F]-modules, analogously to the Nielsen-Schreier theorem. I will discuss this resemblance, along with other motivations for our interest in K[F] arising from the theory of word measures. I will then present a new algorithm for deciding if a given element is part of some basis of a given ideal, similarly to what Whitehead’s algorithm performs in free groups. Based on joint work with Danielle Ernst-West and Doron Puder.
Apr 3	On the tensorization of the variational distance	Aryeh Kontorovich (BGU (CS))