Geometry and Topology Seminar

Time: 17:00 (Israel Time) Location: On Zoom Abstract.The Kan condition guarantees that a simplicial set, a formal colimit of abstract simplices, models enough features of a topological space so that classical homotopy theory can be given a completely combinatorial description. …
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Time: 17:15 Location: On Zoom and in Room 614 Haifa University Mathematics and Science Building Abstract:  I will start by reviewing some work of others: sketching a (higher) categorical approach to geometry. After that, I will explain how using this…
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Time: 17:00 Location: On Zoom and in Room 614 Haifa University Mathematics and Science Building Abstract: I will talk about the cohomology of small categories, introduced by Baues and Wirsching in 1985, and more recently discovered connections to a number…
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Time: Sunday March 13 17:00 Location: On Zoom and in Room 614 Haifa University Mathematics and Science Building Abstract: I will start by describing the concept of a parametrized motion planning algorithm which allows to achieve high degree of flexibility…
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Time:  17:00 (Israel Time) Location:  Room 614, Science & Education Building, University of Haifa                   and on Zoom (see below) https://us02web.zoom.us/rec/share/jtfNDNX5RaN1GdA09LGJykGM_nVmLaHW6dcKoTu5B-yUk5bDjL64Y-nSoQoJHyDI.vjEmMP1I3vyXjJpf Abstract. We consider the category of polynomial functors from finitely generated free groups to abelian groups. Favorite examples include…
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Time: Sunday Jan 30th, 17:00 (Israel Time) Location: On Zoom Speaker: Sanjeevi Krishnan (Ohio State University) Title: A Kan Condition for Directed Homotopy Abstract.The Kan condition guarantees that a simplicial set, a formal colimit of abstract simplices, models enough features…
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Time: Sunday Jan 16th, 16:00 (Israel Time) Location: On Zoom Speaker: Constanze Roitzheim (Kent) Title: How algebraic is a stable model category? Recording: https://us02web.zoom.us/rec/share/U3QSe8AehwtkDxuOa3c_tUrVFn2ZbHfAUbKzPdkFpM11ctz1klUclZ20C1QSPxzd.9rlLEtnAergESl5Q Abstract: There are many different notions of “being algebraic” used in stable homotopy theory. The relationships…
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Time: Sunday Jan 9, 2021, 17:00 (Israel Time) Location: On Zoom Speaker: Jerome Scherer (EPFL) Title:  Floyd’s manifold is a conjugation space. Slides: https://mathematics.haifa.ac.il/wp-content/uploads/Jerome_HaifaTopologySeminarJanuary2022.pdf Recording: https://us02web.zoom.us/rec/share/azLKTgeGE0bXGINeY_5hFcYebo_TqaJg5iUncF2quJzpdheNEOKViXb9kh0Eb13G.oSZiH6GcAjsdiC5R Abstract: This is joint work with Wolfgang Pitsch. We illustrate how equivariant stable homotopy…
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Time: Sunday Jan 2nd, 17:00 (Israel Time) Location: On Zoom Speaker: Dan Mangoubi (Hebrew University) Title: A Local version of Courant’s Nodal domain Theorem. Slides: https://mathematics.haifa.ac.il/wp-content/uploads/Haifa-University-020122-slides.pdf Abstract. Let u_k be an eigenfunction of a vibrating string (with fixed ends) corresponding…
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Time: Sunday Dec 26, 2021, 17:00 (Israel Time) Location: On Zoom Speaker: Daniel Kaner (U. Haifa) Title: Condensed mathematics. ZOOM COORDINATES: https://us02web.zoom.us/j/84987591026?pwd=aTJWcFlOSldKck5leGt2d25CYkRqZz09 Meeting ID: 849 8759 1026 Recording: https://us02web.zoom.us/rec/share/OVXg3b1h30WaEThTuyX1RTOC85Ee42zQrxdl6XzZhP_OywAe_UGYG1mlUENPznLR.ddk5ZtYnmlh5A17E A condensed set is a sheaf of sets on the category of profinite spaces (with an…
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