Différences

Ci-dessous, les différences entre deux révisions de la page.

--- start [2025/02/07 16:01] – [Seminars and conferences] g.m
+++ start [2025/11/07 21:14] (Version actuelle) – g.m
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 Johannes Josi (February 2018).
-Current members: Thomas Blomme, Francesca Carocci, Aloïs Demory, Gurvan Mével, [[Grigory Mikhalkin|Grigory Mikhalkin]], Antoine Toussaint.
+Current members: Thomas Blomme, [[Grigory Mikhalkin|Grigory Mikhalkin]], Antoine Toussaint.
-Alumni: Ivan Bazhov, Johan Bjorklund, Rémi Crétois, Weronika Czerniawska, Yi-Ning Hsiao, Jens Forsgard, Maxim Karev, Ilya Karzhemanov, Sergei Lanzat, Michele Nesci, Alina Pavlikova, Mikhail Pirogov, Johannes Rau, Arthur Renaudineau.
+Alumni: Ivan Bazhov, Johan Bjorklund, Francesca Carocci, Rémi Crétois, Weronika Czerniawska, Aloïs Demory, Yi-Ning Hsiao, Jens Forsgard, Maxim Karev, Ilya Karzhemanov, Sergei Lanzat, Gurvan Mével, Michele Nesci, Alina Pavlikova, Mikhail Pirogov, Johannes Rau, Arthur Renaudineau.
 We organize several seminars:
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-  Joé Brendel (ETHZ), Friday, Feb 21, 14h00, room 6-13 (Seminaire "Fables Géométriques")
+  Enzo Pasquereau (Université de Nantes), Monday, Oct 13, 14h00, room 01-15 (Seminaire "Fables Géométriques")
+"Combinatorial patchworking in codimension 2 and more"
+Abstract: Combinatorial patchworking is a powerful method used for constructing real algebraic hypersurfaces with controlled topology. I will discuss generalization of this method to higher codimension using real phase structure.
+In codimension 2, we give explicit patchworking rules (based on triangulations, sign distributions, and edge orientations) similar to Viro's original formulation for hypersurface.
+As an application, we obtain families of maximal T-curves in real projective 3-space. For higher codimension, we derive new bounds on the number of connected components and prove non-existence of maximal T-curves (for codimension >3) and of high codimension T-surfaces.
+  Joé Brendel (ETHZ), Friday, Feb 21, 15h15, room 6-13 (Seminaire "Fables Géométriques")
 "Split tori in S^2 x S^2, billiards and ball-embeddability"