Olga Paris-romaskevich

Séminaire de la détente mathématique

I am a mathematician working at the CNRS in Marseille in dynamical systems. I an interested in mathematical outreach, with a goal in connecting scientific and artistic practices. I am a co-founder of the association Vagabond Mathematics that supports artistic and social projects related to math.

At the moment, I am working on a project of an exhibition МАТЕМАТИКА telling stories of ten women in mathematics in Russia. Check out the blog with stories.

If you are interested in some of my endeavours (research, outreach and/or art), subscribe to my newsletter (which is mostly in French and sporadically in English).

My newsletter around math and art

News on research, mediation of mathematics and art projects, all of it mostly in France but who knows! The letter is sent each other month.
Your mail address is only used to send you the newsletter. You can at every moment unsubscribe by clicking on the link in any of the newsletters you will receive.


olga.romaskevich at math.cnrs.fr (for mathematics)
olga at pa-ro.net (for theater and cinema projects, unrelated to math)

Université d'Aix-Marseille
Institut de Mathématiques de Marseille (I2M)
39, rue Frédéric Joliot Curie
13453 Marseille Cedex 13

07 68 56 36 88
write to me

Here are some math community initiatives that I am proud to have been a part of.

Recreational mathematics seminar in LYON (OR la détente)

Séminaire de la détente mathématique

Recreational mathematics seminar is a weekly seminar in the House of Mathematics and Informatics in Lyon MMI put in place by students for everybody, in order to speak simply about math, without pretension. I have created in 2014 and co-organized this seminar with many wonderful friends, such as M. Lhuissier, V. Borelli, V. Seigneur, A. Rivera and B. Sevennec. The seminar is still full of activity, and its organizers and format regularly change (even though, I heard, there still is cake before the seminar!).

May 12 : Celebrating Women in Mathematics

Mai 12 is an international day of Celebration of Women in Mathematics that regroups initiatives all over the world. The tradition has been launched in 2019, and it has been very fun to be part of it since the start. Check out our beautiful site, and please participate in Spring of the upcoming year, with an event in your laboratory! Here is an article telling the first year adventure of May12.

N. Agarwal, C. Araujo, P. Bonfert-Taylor, M. Mahmoudi, M. F. Ouedraogo, O. Paris- Romaskevich, M.-F. Roy, E. Strickland, A. V. Gajardo May 12: Celebrating Women in Mathematics, From One Idea to One Hundred Events, Notices of AMS, journal version (2019)

Séminaire de la détente mathématique

Here is a list of my preprints and publications, with when possible links to videos of talks and slides. The by default language is English.


[I] O. Paris-Romaskevich Trees and flowers on a billiard table, rewrite in progress

[II] I. Dynnikov, P. Hubert, P. Mercat, O. Paris-Romaskevich, A. Skripchenko Novikov gasket has zero Lebesgue measure, work in progress


[B] S.Cantat, O. Paris-Romaskevich , J. Xie Free actions of large groups on complex threefolds, soumis 02/2020 | arxiv: 2002.0049, hal-03089242


[9] O. Paris-Romaskevich Tiling billiards and Dynnikov's helicoid, arxiv: 2102.10201, Transactions of the Moscow Mathematical Society (2021)

[8] S.Cantat, O. Paris-Romaskevich Automorhisms of compact Kähler manifolds with slow dynamics, Transactions of American Mathematical society, publié en ligne (2020) | arxiv:2002.03615, hal-03089240

  • slides for Dynamics on your screen conference (August 2020)

[7] P. Hubert, O. Paris-Romaskevich Triangle tiling billiards and the exceptional family of their escaping trajectories: circumcenters and Rauzy gasket, Experimental Mathematics publié en ligne (2019) | arxiv:1804.00181

[6] O. Paris-Romaskevich Epicycles in the hyperbolic sky, Arnold Math J. 4(3), pp. 251-277, (2019) | arxiv: 1704.01339 | journal version | free journal version, no download

[5] 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

[4] 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

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

[2] 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

[1] 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

I had a chance to work on my PhD under supervision of Étienne Ghys and Yulij Ilyashenko, between Russia and France. I have defended my thesis twice (certainly, in order to understand it better) in 2016, in Moscow and in Lyon in order to become кандидат наук and docteur en mathématiques.

Always happy to see my coauthors

All my articles and preprints go to arxiv.

Curriculum Vitae

Séminaire de la détente mathématique

Here is the up-to-date (July 2021) version of my CV in French.


Moscow, Russia, 6th July 1990


2020++ research scientist at CNRS and Marseille Mathematics Institute
2017 - 2019 post-doc at IRMAR at University of Rennes I
2016-2017 teaching and research assistant at UMPA at ENS de Lyon


2007-2012 mathematics and mechanics faculty of Moscow State University
2012-2016 graduate student at National Research University Higher School of Economic in Moscow and École Normale Supérieure de Lyon (working with Étienne Ghys and Yulij Ilyashenko)

Research prize

2016 L'Oréal-UNESCO prize for Women in Science


I have been (am) part of the organization team of conferences such as
Attractors, foliations and limit cycles 2014, Knots and links in fluid flows 2015, Geometries in action 2015, Young researchers meeting GDR Platon 2021, WMWM 2021, Math&Art at CIRM 2023 and scientific seminars such as Géométrie et dynamique at UMPA 2016-2017, Séminaire de la détente mathématique 2014-2017, Teich 2020+


I have been an invited speaker to
Geometry aspects of modern dynamics, Porto 2016, Zero Entropy system 2017, Teichmüller dynamics, mapping class groups and applications 2018,
Real and complex dynamical systems, Moscow 2018, Dynamics of Parabolic Flows 2019, Swiss Knots 2019, Dynamics on your Screen 2020, Algebraic geometry in Angers 2021; Dynamical systems : uniformly and non-uniformly hyperbolic 2021; Topological Methods in dynamics-IV 2021; Differential geometry, billiards, and geometric optics 2021,


I speak and think in English, French and Russian.

Upcoming events for 2021-2022

Here are the upcoming events -- the research conferences we can meet each other, and outreach activities in which I participate, as well as some artistic projects (cinemaclub/theater plays where I act or direct/ exhibition openings) to which I am especially happy to invite you all.

Research :
-- (Minicourse speaker) Winter School on billiards of GDR Platon, Autrans, 17-21 January 2021
-- (Minicourse speaker) Lectures Sophie Kowalevski, 20 May - 1 June 2022, Angers
-- Geometry seminar in Nancy, 13 June 2022
-- (participant, exhibition author) ICM2022, St Petersburg, July 2022

Outreach :
-- Mediatraining workshop, 24-25 November 2021 in Paris
-- Séminaire de la détente talk, 16 February 2022
-- MATRIX x IMAGINARY Conference 2020, 4-6 April 2022 in Paris
-- project of an exhibition МАТЕМАТИКА about women in math in Russia 2020--2022 (you are welcome to the opening of the exhibition on the 5th July 2022 at WM2 meeting in St Petersburg)

-- Cigales Camp for girls in science, CIRM, 25-29 October 2021

Cinema :
You are welcome to CinéMaths cinemaclub in Lyon, at Comœdia cinema, where we watch movies and discuss them and science around them. Here are the four séances of this year, all at 11AM in the morning, on Saturdays.
-- 30 October 2021 Chasseurs des truffes
-- 8 January 2022 I am your man
-- 19 March 2022 Cinq nouvelles du cerveau
-- 14 May 2022 Short animation movies from Clermont Ferrand festival

Theater :
You are welcome to these two theater plays, I play one of the main roles in the first one and do the assistant director job in the second one.
-- 5 December 2021 (in Russian with French subs) Naked King of Evgeny Schwartz at Espace Tonkin
-- 28-30 April 2022 (in French) Contes d'Italie of Maxime Gorky presented by Bazar Slave theater company at Espace Tonkin

good memories

I had/am having lots of fun doing each of the following projects.

Mathématiques vagabondes

On the 12th May 2020 we have created with my friend Marie Lhuissier, a group Mathématiques Vagabondes, or Vagabond Mathematics. Our goal is to live through art and science together, with a particular attention to mathematics. Here are the two projects that we work on now.

The first communal project, with Marie Lhuissier and myself, is #streetmath, drawing mathematics in the streets of Lyon.

Our second project, with Bertrand Paris-Romaskevich and myself, is an exhibition МАТЕМАТИКА. Its goal is to tell stories of ten women in mathematics in Russia today, through a series of interviews and portraits. To prepare this exhibition, we travelled through Russia for two months with Bertrand, from Khabarovsk to St Petersburg. Our project is supported by Committee for Women in Mathematics (CWM) of International Mathematical Union and will be presented at International Congress of Mathematicians in 2022. We also hope to prepare a compagnon book.


Séminaire de la détente mathématique
  • Since 2018 CinéMaths cinema club works in collaboration with a House of Math and Informatics in Lyon, and a cinema Comœdia in Lyon. We create a program together with Coline David, and I animate the discussion around the movie, on math and cinema. After difficult pandemic times, it would be wonderful to see each other one more time, check the #upcoming page to see the agenda of the cinemaclub this 2021-22 year. I hope you enjoy a delicious program of this year.

  • I have done two movies about mathematics : first, a movie Je voudrais vous parler de mathématiques created with Coralie Gourdon in 48h that won a coup de cœur of the jury on PariScience2018 festival; second, I have recently wrote a script for the animated movie Pique-nique sur le plan complexe, in collaboration with its director Denis van Waerbaeke.

  • Here are some of my personal filmic experiences that I did not find completely uninteresting : Ten trees, Une grue et une abeille and Poissons du Rhône.

Mathematics of the sky

With my PhD sister Marie Lhuissier and my PhD brother Valentin Seigneur, we have created a website to share mathematics around planetary motion. This site has received a coup de coeur of Prix D'Alembert jury in 2018. Three of us have also written the texts for Mathematical Calendar 2021, under direction of Ana Rechtman, in the spirit of the mathematics of the sky.

Letters from the forth dimension

Starting from the text of Moira Chas, we have created with Marie Lhuissier and Valentin Seigneur, a theater play about a mathematician Alicia Boole, her work on regular polytopes of dimension 4, her relationship with her sister Lucy and life in Victorian England for a woman of her talent and ambition.

Séminaire de la détente mathématique

Conferences and performances


I did translate into French a book without words... by Arseniy Akopyan. This book Figures sans paroles is accessible at Amazon for now, and we are happy it exists in this way already. Although we hope to find an editing house in France to help us edit this book better.