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CombiTop SIGNED

New Interactions of Combinatorics through Topological Expansions, at the crossroads of Probability, Graph theory, and Mathematical Physics

Total Cost €

0

EC-Contrib. €

0

Partnership

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Project "CombiTop" data sheet

The following table provides information about the project.

Coordinator
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS 

Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794
website: www.cnrs.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 1˙086˙125 €
 EC max contribution 1˙086˙125 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-03-01   to  2022-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS FR (PARIS) coordinator 1˙086˙125.00

Map

 Project objective

'The purpose of this project is to use the ubiquitous nature of certain combinatorial topological objects called maps in order to unveil deep connections between several areas of mathematics. Maps, that describe the embedding of a graph into a surface, appear in probability theory, mathematical physics, enumerative geometry or graph theory, and different combinatorial viewpoints on these objects have been developed in connection with each topic. The originality of our project will be to study these approaches together and to unify them.

The outcome will be triple, as we will: 1. build a new, well structured branch of combinatorics of which many existing results in different areas of enumerative and algebraic combinatorics are only first fruits; 2. connect and unify several aspects of the domains related to it, most importantly between probability and integrable hierarchies thus proposing new directions, new tools and new results for each of them; 3. export the tools of this unified framework to reach at new applications, especially in random graph theory and in a rising domain of algebraic combinatorics related to Tamari lattices.

The methodology to reach the unification will be the study of some strategic interactions at different places involving topological expansions, that is to say, places where enumerative problems dealing with maps appear and their genus invariant plays a natural role, in particular: 1. the combinatorial theory of maps developped by the 'French school' of combinatorics, and the study of random maps; 2. the combinatorics of Fermions underlying the theory of KP and 2-Toda hierarchies; 3; the Eynard-Orantin ``topological recursion' coming from mathematical physics.

We present some key set of tasks in view of relating these different topics together. The pertinence of the approach is demonstrated by recent research of the principal investigator.'

 Publications

year authors and title journal last update
List of publications.
2019 Guillaume Chapuy
On tessellations of random maps and the $$t_g$$ t g -recurrence
published pages: 477-500, ISSN: 0178-8051, DOI: 10.1007/s00440-018-0865-6
Probability Theory and Related Fields 174/1-2 2019-12-16
2019 Baptiste Louf
A new family of bijections for planar maps
published pages: 374-395, ISSN: 0097-3165, DOI: 10.1016/j.jcta.2019.06.006
Journal of Combinatorial Theory, Series A 168 2019-11-13
2018 A. Alexandrov, G. Chapuy, B. Eynard, J. Harnad
Fermionic Approach to Weighted Hurwitz Numbers and Topological Recursion
published pages: 777-826, ISSN: 0010-3616, DOI: 10.1007/s00220-017-3065-9
Communications in Mathematical Physics 360/2 2019-11-13

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