Geometry and Topology Seminar

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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Time: Sunday Dec 19, 17:00 (Israel Time) Location: On Zoom Speaker: Omer Bobrowski (Technion) Title: Topological Phase Transitions in Random Geometric Complexes Abstract. Connectivity and percolation are two well studied phenomena in random graphs.  In this talk we will discuss…
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Time: Sunday Dec 12, 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/XY3l8ev_WpQUpjD0RzE-X862TBv9ntxuNhe1PI7MSYyf3yb4JhYuMMM27v2MXFde.hYunCTG7Me2VAC6e Speaker: Kate Ponto (Kentucky) Title: Iterated Traces Abstract. The trace of a matrix does not seem like an operation that should be iterated, but if we step back…
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Time: Sunday December 5th 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/MjyzxaBsbY7S1RGjShKMSBcfKtgqm8STy9-_KzeHeMdz8bwJhZ-F1wJuG0QhDrUv.aa8mS84tuLDHuHHs Slides: http://categorified.net/Haifa.pdf Speaker: Theo Johnson-Freyd (Dalhousie/Perimeter Institute) Title: Algebraically Closed Higher Categories Abstract. Super Tannakian duality can be interpreted as saying that the symmetric monoidal category Vec is…
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Time: Sunday November 28th 17:00 (Israel Time) Location: On Zoom Speaker: Jereon Hekking (KTH) Title: Graded algebras, projective spectra and blow-ups in derived algebraic geometry Recording: https://us02web.zoom.us/rec/share/Cb6AhzbntZk0ipwpYjRkoAlQNTYyhGOuiY42sSP0AcoSz7i0hacCJNQrrVoqlWw.sOAp1cmjCc-0TKjv Abstract. The goal of this talk is to define the derived blow-up of…
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Time: Sunday November 21st 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/ARtScxOE0tfOqjHkNNFBUYhtya5XHrPsWCKXQBbEAqVIs6HooFHsRKGe0cl6EHc.Fz4o-ycGSOsZ49J- Speaker: Yoav Len (St. Andrews) Title: The Geometry of Graphs and Algebraic Curves Abstract. My talk will revolve around combinatorial aspects of algebraic curves. Via tropical geometry, problems…
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Time: Sunday, Nov, 14 at 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/5KZWjr3mjh7ltmMa2ijysTj_WKFy8JBOOku8XFclUB3xibnXenLooKeN3Tp0ORw.EGSolWYiClpROhFg Abstract:  Given a group G, an Eilenberg-MacLane space X = K(G,1) provides a topological model of both G and Aut(G). The latter is understood via Whitehead’s theorem…
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Time: Sunday, Nov, 7 at 17:00 (Israel Time) Location: On Zoom https://us02web.zoom.us/rec/share/58OVaq8ckzWZflq-rW1yThWtxr3XgOwYqF7VHk25SRGMOrJkdKFFQznre3OHdRX6.gG2nOZHpg4sDYSvP Speaker: Andrea Gagna (Czech Academy of Sciences) Title:  “(∞, 2)-categories and where to find them” Abstract: In this talk I will briefly review some of the reasons why ∞-categories were…
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Time: Sunday, Oct. 31st, 17:00Location: On Zoom and in Room 614 Haifa University Mathematics and Science BuildingSpeaker: Philippe Charron (Technion) Zoom recording: https://us02web.zoom.us/rec/share/nTEecWyLErYjpRjDfvxPASSzEj9Hy4pu4C4tjVVJudtLZ-tUwjR3knb_vbe7nTLP.0WWEpalVf2X4D9Ee Title: Pleijel’s theorem for Schrödinger operatorsWe will discuss some recent results regarding the number of nodal domains…
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Time: Sunday Oct. 24th 17:00 Speaker: Yaniv Ganor (Technion) Title: Big Fiber Theorems and Ideal-Valued Measures in Symplectic Topology Location: On Zoom and in Room 614 Haifa University Mathematics and Science Building Zoom link: https://us02web.zoom.us/recording/detail?meeting_id=Sk9IUknKRJGknIqZ1jWJ7g%3D%3D Abstract: In various areas of…
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