fables
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fables [2022/06/14 09:02] – kalinin0 | fables [2023/02/28 16:53] – kalinin0 | ||
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====== Séminaire " | ====== Séminaire " | ||
- | The normal starting time of this seminar | + | ---- |
+ | |||
+ | Monday, March 6, 2023 | ||
+ | room 6-13 | ||
+ | |||
+ | **15h00 — Ali Ulaş Özgür Kişisel** | ||
+ | |||
+ | **Expected measures of amoebas of random plane curves** | ||
+ | |||
+ | There are several natural measures that one can place on the amoeba of an algebraic curve in the complex projective plane. Passare and Rullgård prove that the total mass of the Lebesgue measure on the amoeba of a degree $d$ curve is bounded above by $π^{2} d^{2} / 2$, by comparing it to another Monge-Ampère type measure, which is dual to the usual measure on the Newton polytope of the defining polynomial via the Legendre transform. Mikhalkin generalizes this upper bound to half-dimensional complete intersections in higher dimensions, by considering another measure supported on their amoebas; their multivolume. | ||
---- | ---- | ||
- | Jeudi 16 juin 2022 à 16h00, salle 1-07 | + | Monday, February 27, 2023 |
+ | room 6-13 | ||
- | Prof. Yakov Eliashberg | + | **15h00 — Evgeni Abakoumov (Paris/ |
- | | + | |
+ | **Chui' | ||
+ | |||
+ | C. K. Chui conjectured in 1971 that the average gravitaional field strength in the unit disk due to unit point masses on its boundary was the smallest when these point masses were equidistributed on the circle. We will present an elementary solution to some weighted versions of this problem, and discuss related questions concerning approximation of holomorphic functions by simple partial fractions. This is joint work with A. Borichev and K. Fedorovskiy. | ||
+ | |||
+ | **16h00 — Ferit Ozturk | ||
+ | |||
+ | **Every real 3-manifold admits a real contact structure** | ||
+ | |||
+ | We survey our results regarding real contact 3-manifolds and present our result in the title. | ||
+ | A real 3-manifold is a smooth 3-manifold together with an orientation preserving smooth involution, called a real structure. | ||
+ | A real contact 3-manifold is a real 3-manifold with a contact distribution that is antisymmetric with respect to the real structure. | ||
+ | The standard examples | ||
+ | We show that every real contact 3-manifold can be obtained | ||
+ | As a corollary we show that any oriented overtwisted contact structure on an integer homology real 3-sphere can be isotoped to be real. | ||
- | Abstract: The highly non-trivial stable homotopy groups of the Waldhausen’s | ||
- | h-cobordism space inject into the homotopy groups of spaces of appropriate Legendrian submanifolds. For instance, | ||
- | Jeudi 16 juin 2022 à 16h00, salle 1-07 | ||
---- | ---- | ||
- | Monday, Dec, 20th, 16h15 - 18h15 | ||
- | | ||
- | **On the asymptotics of Arakelov invariants** | ||
- | We will discuss | + | Monday, February 6, 2023 |
- | surfaces | + | 16:00, room 6-13 |
- | fundamental role in bounds for the number of geometric torsion points on | + | |
- | curves. We will show that their asymptotic behaviour in families | + | **Sergey Finashin (Ankara)** |
- | degenerating Riemann surfaces | + | |
+ | **“Affine Real Cubic Surfaces”** | ||
+ | |||
+ | Abstract: (A joint work with V.Kharlamov) | ||
+ | affine, transversal at infinity, non-singular real cubic surfaces | ||
+ | |||
+ | ---- | ||
+ | |||
+ | Thursday, June 16, 2022 | ||
+ | 16:00, room 1-07 | ||
+ | |||
+ | **Prof. Yakov Eliashberg (Stanford)** | ||
+ | |||
+ | **“Topology | ||
+ | |||
+ | Abstract: The highly non-trivial stable homotopy groups of the Waldhausen’s | ||
+ | h-cobordism space inject into the homotopy groups of spaces of appropriate Legendrian submanifolds. For instance, | ||
---- | ---- | ||
Fri 17.12.2021, 13h30, room 6-13 | Fri 17.12.2021, 13h30, room 6-13 |
fables.txt · Dernière modification : 2023/12/05 11:54 de slavitya_gmail.com