Olga Paris-romaskevich

Séminaire de la détente mathématique

I am a mathematician working at CNRS and in Mathematics Institute in Marseille, my area is dynamical systems. I co-organize a Rauzy seminar (subscribe to our newsletter and come to Zoom talks!) and the girls only math school Cigales, in CIRM, two times per year.I am involved in mathematical outreach, surfing on the frontier between science and art. I co-founded the association Vagabond Mathematics supporting art and society math projects. Our on-going project #streetmath is devoted to regularly drawing mathematical art in the streets of Lyon, you can support us on this donation page.I love to learn and practice storytelling in any form, with a high preference to moviemaking. My last (and postponed for some time) project is a trip and blog МАТЕМАТИКА telling stories of ten women in mathematics in Russia. Now I am working on a documentary film about girls in mathematics... to come in April 2023!I am a member of SNCS (National syndicate of researchers) and of No fly climate sci. I limit my plane travel as much as I can. The last time I flew a plane was 21st September 2021. I am a member of Femmes et mathématiques because I believe that mathematical community should be inclusive and welcoming to everybody who aspires for knowledge, curiosity and creativity.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.
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olga.romaskevich at math.cnrs.fr (for mathematics)
olga at pa-ro.net (for theater and cinema projects, not necessarily related to math)
Université d'Aix-Marseille
Institut de Mathématiques de Marseille (I2M)
39, rue Frédéric Joliot Curie
13453 Marseille Cedex 13

write to me

Here are 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


Publication in the mathematical gazette (a journal of French Mathematical Society) Vers une médiation en phase avec la société : réflexion autour des Cigales, to be published in October 2022

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


[10] S.Cantat, O. Paris-Romaskevich , J. Xie Free actions of large groups on complex threefolds, Bulletin of London Mathematical Society (2022), published online

[9] O. Paris-Romaskevich Tiling billiards and Dynnikov's helicoid, arxiv: 2102.10201, Transactions of the Moscow Mathematical Society, 82:1, 157-174 (2021)

[8] S.Cantat, O. Paris-Romaskevich Automorhisms of compact Kähler manifolds with slow dynamics, Transactions of American Mathematical society, published online (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 published online (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.

My (very smart!) 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 and my LinkedIn account.


Moscow, Russia, 6th July 1990


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


I speak and think in English, French and Russian. I speak some German and Spanish.

Upcoming events for 2021-2022

Here are the upcoming events -- the research conferences we can meet each other, outreach activities in which I participate, as well as some artistic projects and events.

Research :
-- Luxembourg Multiplicities talk, 27-29 September 2022
-- Combinatorics, Dynamics and Geometry on Moduli spaces, Marseille, 19-23 September 2022
-- Big Mapping Class Group, Marseille, 10-14 October 2022

Outreach :
1. MATRIX x IMAGINARY Conference, end of August 2022, Paris
2. Journée lycéen.ne.s au CIRM 13 October 2022, Marseille
3. Let's talk about outreach conference, 23-29 October 2022 in Diablerets
4. Hippocampe stage, Marseille, IREM, 12-14 December 2022
-- (organiser) Journée-conférence collaborative autour des Cigales, 14 April 2023, CIRM
-- (organiser) Maths and art: creating together workshop, CIRM, November 2023

-- #Streetmath 17 September 2022
-- Cigales Camp for girls in science, CIRM, 31 October-4 November 2022
-- Climathics workshop on climate change and mathematical community
engagement, Diablerets, 28 Nov -- 1 Dec 2022
-- Cigales Camp for girls in science, CIRM, 17-21 April 2023

Cinema :
You are welcome to CinéMaths cinemaclub in Lyon, at Comœdia cinema, where we watch movies and discuss them and science around them. The 2022/23 program soon to be announced !


We all have a need to learn, and outreach is one of the million ways to give this opportunity to ourselves and others. I believe in the necessity of outreach as one of the tools to keep up the connection between scientific community and society, and avoid misunderstandings. On a more personal note, outreach for me is a way to practice art while working is a scientist.

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. Initially it had to be presented at ICM2022 at Saint Petersburg. ICM won't take place in Saint Petersburg. We keep you in touch about the opening of the exhibition -- we continue to work in it, in order to tell stories of Russian female mathematicians.


I am eager to learn and practice storytelling in any form, with a high preference to moviemaking (for which I have a true and consistent love). I am open to collaborations that will help me learn moviemaking, in any of its aspects.

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 have worked on (so far ;)) 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 co-written (with Denis van Waerbaeke) the animated movie Pique-nique sur le plan complexe, for Denis series Voyages aux pays des mathématiques aired on ARTE.

  • Here are some of my personal filmic experiences : Ten trees, Une grue et une abeille and Poissons du Rhône.


МАТЕМАТИКА was thought as a chorus of voices of ten women joining into one song of Russia and its mathematics. This project was dreamt as an impression of modern Russian mathematics in many of its different aspects. Initially the project was planned as an exhibition to be presented at the World Meeting for Women in Mathematics, satellite of ICM2022. The project was frozen because of the war in Ukraine (for more detail, read the statement on our site). Although, the in-detail blog telling the story of a trip through Russia that we made to prepare the exhibition is there for you to read.This is a joint project with a wonderful photographer Bertrand Paris-Romaskevich.

Mathematics of the sky

I love sharing mathematics with anybody, and I find it especially challenging and exciting to share mathematics with non-mathematicians.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.


I have been acting since 2016. It all started with improv theater, continued with clowning, and now I am exploring theater of text, with a particular interest in a so-called Stanislavsky method in all its forms. Acting is very useful for sharing mathematics in a more relatable way!Starting from the text of Moira Chas, we have created with Marie Lhuissier and Valentin Seigneur, a theater play Letters from the forth dimension, 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 like to explore different forms of mathematical storytelling, here are some eclectic projects I did, all of them somewhere on (one of the) borders between a math talk and a theater performance. I am open to opportunities that will challenge me to create new formats of mathematical storytelling.

(not too much lost in) Translation

I did translate into French a book without words... by Arseniy Akopyan. This book is called Figures sans paroles and is an ode to plane geometry. It 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.