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# Web-page of the Geneva University tropical group

PhD graduated: Kristin Shaw (December 2011), Lionel Lang (December 2014), Nikita Kalinin (December 2015), Mikhail Shkolnikov (June 2017), Johannes Josi (February 2018).

Current members:Thomas Blomme, Grigory Mikhalkin, Mikhail Pirogov.

Alumni: Ivan Bazhov, Johan Bjorklund, Rémi Crétois, Weronika Czerniawska, Yi-Ning Hsiao, Jens Forsgard, Maxim Karev, Ilya Karzhemanov, Sergei Lanzat, Michele Nesci, Alina Pavlikova, Johannes Rau, Arthur Renaudineau.

We organize several seminars:

pre-2017 Battelle Seminar and

Also, you can check how tropical curves (and hypersurfaces, in general) emerge from abelian sandpile models: tropicalsand

# Seminars and conferences

Geneva-Neuchâtel Symplectic Geometry seminar (GeNeSys)

2022, October 18, Université de Genève, salle 6-13

Ilia Itenberg (Sorbonne)
Real enumerative invariants and their refinement
Salle 6-13, 14h15

Abstract:

The talk is devoted to several real and tropical enumerative problems. We suggest new invariants of the projective plane (and, more generally, of toric surfaces) that arise as results of an appropriate enumeration of real elliptic curves. These invariants admit a refinement (according to the quantum index) similar to the one introduced by Grigory Mikhalkin in the rational case. We discuss the combinatorics of tropical counterparts of the elliptic invariants under consideration and establish a tropical algorithm allowing one to compute them. This is a joint work with Eugenii Shustin.

# Geneva-Neuchâtel Symplectic Geometry Seminar

Schedule and more details: seminar page

We had our page http://www.unige.ch/math/folks/langl/battelle/

Also, there is Séminaire de Géométrie Tropicale in Paris:http://erwan.brugalle.perso.math.cnrs.fr/Seminaires/Geotrop/Geotrop.html

If you want to register, say me (Misha Shkolnikov). You should be approved user to edit pages. You can write here something. (Create a small web page about you, write about you interests, explain tropical philosophy of our group, upload articles etc).

Page creating is simple, just add internal link on non-existing page from existing.

For example еуые: .

Google “docuwiki …” to know how to do something if it is not clear.

Send me your nickname and password - to have right to create and edit pages.

Latex support is here. $\int \mathbb C + \prod\limits_{x\to \infty} f^g$

start.txt · Dernière modification : 2022/12/04 20:25 de g.m