Colloquium

Place: Room 614, Education and Sciences Building, University of Haifa Date and Time: December 17, 2024, 14:00-15:00 Abstract: Let G be a Lie group, L a lattice subgroup in G, and H a closed subgroup of G. Suppose that L acts on the homogeneous space…
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Zoom recording Abstract:The Aldous-Lyons conjecture from probability theory states that every (unimodular) infinite graph can be (Benjamini-Schramm) approximated by finite graphs. This conjecture is an analogue of other influential conjectures in mathematics concerning how well certain infinite objects can be…
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Place: Room 614, Education and Sciences Building (Zoom screening), University of Haifa Date and Time: November 19, 2024, 14:00-15:00 Zoom recording Abstract: Symplectic geometry, a field originating in the study of classical mechanics, explores manifolds where real-valued functions induce flows, leading to…
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Time: Tuesday, 18.06.24 at 14:00-15:00 Location: Room 614, Science and Education Building, University of Haifa. Zoom link: https://us02web.zoom.us/j/88665951849?pwd=Tjg5UlRjKzE2ZHN1NkNXWmp5R1V1dz09Meeting ID: 886 6595 1849Passcode: Contact Sefi Ladkani Abstract: The Mobius function is one of the most important arithmetic functions. There is a…
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Time: Tuesday, 21.05.24 at 14:00-15:00 Location: Room 614, Science and Education Building, University of Haifa. Zoom link: https://us02web.zoom.us/j/88665951849?pwd=Tjg5UlRjKzE2ZHN1NkNXWmp5R1V1dz09Meeting ID: 886 6595 1849Passcode: (contact Sefi Ladkani) Abstract: I shall give a survey of some recent developments in the study of equations…
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The free skew field as a version of noncommutative localization of the free algebra was constructed by Amitsur and Cohn. We will call the elements of the free skew field noncommutative (nc for short) rational functions. Recently, nc rational functions…
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We give an introduction to the theory of locally compact quantum groups and present an old-new construction called the Rieffel deformation, which allows constructing quantum groups from simple classical objects. If time permits, we show how to construct Levy processes,…
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In many machine learning tasks, the goal is to learn an unknown function which has some known group symmetries. Equivariant machine learning algorithms exploits this by devising architectures (=function spaces) which have these symmetries by construction. Examples include convolutional neural…
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 (A joint work with Waltraud Lederle) In order to avoid technicalities I will focus on one specific example for a higher (-)rank lattice: the group . This group exhibits strong rigidity properties, some of which are naturally expressed in topological terms. For example,…
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The Math colloquium will be in person next week on Tuesday the 30th of January, in room 614, Science & Education building. Zoom link: https://us02web.zoom.us/j/85060821223?pwd=cWdyY3FuZVFTbmR2VXNaM3lnbDFiZz09