Olga Paris-romaskevich

I am currently a post-doc at IRMAR in University of Rennes I.

I’m mainly interested in the study of asymptotic behavior of dynamical systems and all the rich mathematics one can come across while working on this kind of questions : integrable systems, ergodic theory, foliation theory and geometry.

My goal is to explore and to share the joy of exploring with others.


olga.romaskevich at univ-rennes1.com

IRMAR, Campus de Beaulieu, bâtiments 22 et 23
263 avenue du Général Leclerc, CS 74205
35042 RENNES
office : 434
07 68 56 36 88
email me


My research turns around dynamics and geometry, and is often inspired by some "real world" physical systems. Currently I am interested in the study of maximally superintegrable systems.

publications and preprints

O. Romaskevich Epicycles in hyperbolic sky, preprint (05.04.2017) arxiv: 1704.01339

Yu. Ilyashenko, O. Romaskevich Sternberg linearization theorem for skew products, Journal of Dynamical and Control Systems, Volume 22, Issue 3, pp. 595-614 (2016) // arxiv: 1505.05776 // journal version

L.Bowen, A.Bufetov, O. Romaskevich, Mean convergence of Markovian spherical averages for measure-preserving actions of the free group, Geometriae Dedicata, 181 (1), 293-306, (2015) // arxiv: 1502.01797 // journal version

O. Romaskevich, On the incenters of triangular orbits on elliptic billiards, L’Enseignement Mathématique (2) 60 (2014), 247–255 // arxiv: 1304.7588// journal version

A. Klimenko, O. Romaskevich , Asymptotic properties of Arnold tongues and Josephson effect, Moscow Mathematical Journal, volume 14, issue 2, pp. 367-384, (2014), // arxiv: 1305.6746 // journal version

V. Kleptsyn, I. Schurov, O. Romaskevich Josephson effect and slow-fast systems (in Russian), Nanostructures. Mathematical physics and modelling, 8:1, pp. 31–46, (2013); // arxiv: 1305.6755 // journal version


Dynamics of physical systems, normal forms and Markov chains

My thesis was written under supervision of Étienne Ghys and Yulij Ilyashenko, in-between Russia and France. This great experience is called thèse en co-tutelle in French. I had two defenses in 2016: on the 25th of October in Russia and on the 7th December in France.
I am кандидат наук and docteur en mathématiques.

Please contact me if you are interested in a complete .pdf version of my thesis (available in English with French introduction as well as in Russian).

current financial support

2016 Bourse l'Oréal-UNESCO for Women in Science



I have some teaching assistant experience accumulated (in Russian and in French). I taught courses in Higher School of Economics (HSE) in Moscow while I was a graduate student as well as at ENS de Lyon as ATER. I also organised some number of lectures and courses for motivated students. I co-organised a dynamical systems seminar at Moscow State University (MSU) when I was a graduate student and I taught some courses at the Summer School Modern Mathematics that takes place each year in Dubna, Russia.

2009 - 2011 Calculus teacher, School 57, Moscow
2011-2013 Dynamical systems seminar for undergraduates, MSU
2012-2013 TA Optimal control and variational calculus, NRU HSE
2013 Modern Mathematics, Random walks on the plane and their limits: simple random walk, LERW and SAW (with D.Chelkak)
2014 Modern Mathematics, Around n-body problem: integrable systems and KAM-theory
2016 TA L3 Algebra, L3 Topology and differential calculus, ENS de Lyon


born 6th July 1990 in Moscow, nationality: Russian


october 2017 - now postdoc at IRMAR, Université de Renes I
2016-2017 ATER at Unité des Mathématiques Pures et Appliquées, ENS de Lyon


2003-2007 Moscow School 57 (silver medal)
2007-2012 undergraduate studies: faculty of mathematics and mechanics of Moscow State University (diploma with honours in 2012)
2012-2016 graduate student on co-tutelle program between National Research University Higher School of Economics and École Normale Supérieure de Lyon (under supervision of Étienne Ghys and Yulij Ilyashenko)

Co-organized events and seminars

2016-2017 Organiser of Geometry and Dynamics Seminar (with Marco Mazzucchelli)
2014-2017 Creator and organiser of Recreative Mathematics Seminar (known as Séminaire de la détente mathématique, more info here.
june 2015 International conference Geometries in action
april 2015 International conference Knots and links in fluid flows
january 2014 International conference Attractors, foliations and limit cycles

Invited conference talks

november 2013 Young researcher meeting in geometry and dynamics, CIRM, Marseille january 2016 Geometric aspects of modern dynamics, Porto

Invited seminar talks

Dijon (11/15), Nice (02/16), UFF Rio de Janeiro (05/16), PUC Rio de Janeiro (05/16), Paris Sud (06/16), Avignon (06/16), NRU HSE Nizhny Novgorod (09/16), Rennes (11/16), ENS de Lyon (01/17), Marseille (01/17), Grenoble (01/17), Paris 13 (03/17), Bordeaux (03/17), Avignon (04/17), Luxembourg(05/17)

invited scientific sejourns

december 2012 ENS de Lyon (invited by Alexey Glutsyuk)
april-may 2016 Instituto Nacional de Matemática Pura e Aplicada, Rio de Janeiro


Russian is my native language, I am fluent in English and in French.
I have some basic knowledge of German, Spanish and Portuguese.

A complete CV is available upon request.

You are likely to meet me at the following upcoming events :

Zero Entropy Systems EventMarseille, France27 November - 1 December 2017
Tilings and Recurrence Conference Marseille, France4-8 December2017
Contemporary Math (Arnold's 80th birthday conference)Moscow, Russia 18-23 Decembre2017

I love exploring ways to share mathematics, inside mathematical community and also outside of it (both are tricky...). Here is a list of some things I have been doing with a goal to be a soldier of math.

Séminaire de la détente mathématique

Séminaire de la détente mathématique

Séminaire de la détente was intended as a weekly seminar for mathematical undergraduates but also for PhD students and researchers, for everybody with some "basic" (ha-ha) math education. But everybody is welcome !!!
The seminar takes place at the House of Mathematics and Informatics in Lyon, each Wednesday from 17h30 till 19h30. We share maths that we like with each other in the standard form of talks. The idea was to present beautiful and exciting math ideas in a relaxed atmosphere. And to make the exchanges between students and professors possible as well as make the undergraduate students motivated to not only understand maths but also explain maths well to their friends. We also eat cake (before) and drink wine (afer).
I had an idea in February 2014 but the seminar started really working (and continues to do so) because of the help of numerous friends: Marie Lhuissier, Vincent Borrelli, Valentin Seigneur, Alejandro Rivera, Léo Mathis and Bruno Sevennec. I am not more organizing the seminar but I am so happy that it still exists and works wonderfully !


Séminaire de la détente mathématique

Based on a text written by Moira Chas, we created a theater play Letters from the forth dimension with Marie Lhuissier and Valentin Seigneur. We have been presenting this play on numerous occasions in different cities: Tunis, Lyon as well as Chapelle-sur-Erdre.

This play is about life of Alicia Boole, and her pioneer work on four-dimensional regular polytopes. The play tells about her life, her relationship with her sister Lucy and her mathematics. And it tells a lot about the place of women in mathematics at her times.

Each time we play it, I am happy.

Mathématiques du ciel

Séminaire de la détente mathématique

With Marie Lhuissier and Valentin Seigneur, we created a web-site which will (we hope!) tell to a larger public the passionate story of the three-body problem and mathematical questions arising from the planetary motion. This work was done as Laboratoire Junior and was sponsored by ENS de Lyon, and on the first stages we had the support of Musée des Confluences. It was a long run but we have done it. I am very grateful for Marie and Valentin for that, and for all the people that helped us! Have a nice mathematico-spatial promenade!