raphy | Department of Mathematics

U. Haifa Topology & Geometry seminar: Sunday, Apr. 24, 2022. Speaker: Surojit Ghosh (IIT Roorkee). Title: “Slice Filtration of E”.

Author: raphy April 24, 2022

Time: 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/hgnju1bKL_ueL3VYdTVbsd1yvB737rHJxu7HK2UyAien-F4CgUYMa2iWYxL_7sHL.Yn8cQ8p8qmFdUK0e Abstract. The slice filtration is an equivariant analogue of the Postnikov tower and it is modeled on Voevodsky’s motivic filtration. I will begin by recalling the definition of slice filtration along…
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Geometry and Topology Seminar

Colloquium: Tuesday, April 12, 2022. Speaker: Ariel Yadin (Ben-Gurion). Title: “Abundance of subgroups via random walk entropy”.

Author: raphy April 7, 2022

The talk (given in person in room (614) will also be broadcasted on zoom, and the link for the meetings is:https://us02web.zoom.us/j/83337601824 Time: 14:00 Abstract: Given a (finitely generated) group, we are interested in investigating whether the group has a rich family…
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Colloquium

U. Haifa Topology & Geometry seminar: Sunday, Apr. 10, 2022. Speaker: Niles Johnson (Ohio State University). Title: “Graded Picard categories and the 2-type of the sphere”.

Author: raphy April 6, 2022

Time: 17:00 (Israel Time) Location: On Zoom Recording: https://us02web.zoom.us/rec/share/c93WMCqjj3eUShqHmo0pAyvcVQsJCDKMfFflNdJvj3NjjXnwH6rndDkFT1J8YBFJ.wkT8MPwk-Dl_yovw Slides: https://nilesjohnson.net/notes/grPic-P2S.pdf Abstract: The Stable Homotopy Hypothesis connects symmetric monoidalalgebra and stable homotopy theory. In a classical special case, thethe tensor product of graded abelian groups leads to a model for…
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Geometry and Topology Seminar, Seminar

U. Haifa Topology & Geometry seminar: Sunday, Apr. 3, 2022. Speaker: Sanjeevi Krishnan (Ohio State University). Title: “A Kan Condition for Directed Homotopy”.

Author: raphy April 1, 2022

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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Geometry and Topology Seminar, Seminar

Colloquium: Tuesday, April 5, 2022. Speaker: Speaker: Christopher Deninger (Munster). Title: “Dynamical systems for arithmetic schemes”.

Author: raphy March 31, 2022

On Zoomhttps://us02web.zoom.us/j/83337601824 Time: 14:00 Abstract: For any system of polynomials P_1, …, P_n over the polynomial ring R = Z[X_1, …, X_m] we construct a continuous time dynamical system whose periodic orbits come in compact packets that are in bijection with the…
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Colloquium

U. Haifa Topology & Geometry seminar: Sunday, Mar. 27, 2022. Speaker: Oren Ben-Bassat (Haifa). Title: “Derived Analytic Geometry”.

Author: raphy March 26, 2022

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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Geometry and Topology Seminar, Seminar

Colloquium: Tuesday, March 29, 2022. Speaker: Speaker: Christopher Voll (Bielefeld). Title: “Zeta functions of groups, rings, and modules”.

Author: raphy March 24, 2022

The zoom link for our meetings is:https://us02web.zoom.us/j/83337601824 Abstract: Zeta functions are ubiquitous in mathematics. In algebra and geometry, they often have an enumerative interpretation, prominent examples being the Dedekind zeta function of a number field and the (Weil) zeta function of…
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Colloquium

The 2022 distinguished lecture series will be given by Professor Mikahail Kapranov , U. of Tokyo, 9th, 10th and 11th of May 2022

Author: raphy March 21, 2022

Perverse sheaves and their categorification PosterPerverse sheaves are by now a classical tool in algebraic geometry, having many applications in other areas such as representation theory. The lectures are based on joint works in progress with T. Dyckerhoff,V. Schechtman, Y….
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U. Haifa Topology & Geometry seminar: Sunday, Mar. 20, 2022. Speaker: Andy Tonks (Malaga). Title: “On some generalisations of Baues-Wirsching cohomology”.

Author: raphy March 17, 2022

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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Geometry and Topology Seminar, Seminar

Colloquium: Tuesday, March 22, 2022. Speaker: Speaker: Anush Tserunyan (McGill). Title: “A story about pointwise ergodic theorems”.

Author: raphy March 17, 2022

Will be on Zoom https://us02web.zoom.us/j/83337601824 Time: 14:00 Abstract: Pointwise ergodic theorems provide a bridge between the global behaviour of the dynamical system and the local combinatorial statistics of the system at a point. Such theorems have been proven in different contexts, but…
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Colloquium

Author Archive: raphy

U. Haifa Topology & Geometry seminar: Sunday, Apr. 24, 2022. Speaker: Surojit Ghosh (IIT Roorkee). Title: “Slice Filtration of E”.

Colloquium: Tuesday, April 12, 2022. Speaker: Ariel Yadin (Ben-Gurion). Title: “Abundance of subgroups via random walk entropy”.

U. Haifa Topology & Geometry seminar: Sunday, Apr. 10, 2022. Speaker: Niles Johnson (Ohio State University). Title: “Graded Picard categories and the 2-type of the sphere”.

U. Haifa Topology & Geometry seminar: Sunday, Apr. 3, 2022. Speaker: Sanjeevi Krishnan (Ohio State University). Title: “A Kan Condition for Directed Homotopy”.

Colloquium: Tuesday, April 5, 2022. Speaker: Speaker: Christopher Deninger (Munster). Title: “Dynamical systems for arithmetic schemes”.

U. Haifa Topology & Geometry seminar: Sunday, Mar. 27, 2022. Speaker: Oren Ben-Bassat (Haifa). Title: “Derived Analytic Geometry”.

Colloquium: Tuesday, March 29, 2022. Speaker: Speaker: Christopher Voll (Bielefeld). Title: “Zeta functions of groups, rings, and modules”.

The 2022 distinguished lecture series will be given by Professor Mikahail Kapranov , U. of Tokyo, 9th, 10th and 11th of May 2022

U. Haifa Topology & Geometry seminar: Sunday, Mar. 20, 2022. Speaker: Andy Tonks (Malaga). Title: “On some generalisations of Baues-Wirsching cohomology”.

Colloquium: Tuesday, March 22, 2022. Speaker: Speaker: Anush Tserunyan (McGill). Title: “A story about pointwise ergodic theorems”.

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