I am a mathematician working at CNRS and in Mathematics Institute in Marseille, my area is dynamical systems. I co-organize a Rauzy seminar in my laboratory, and the school Cigales, in CIRM.
I am interested in mathematical outreach, especially through art. With the association Vagabond Mathematics that I co-founded, we do Streetmath art in the streets of Lyon.I love to learn and practice storytelling in any form, with a high preference to moviemaking. My last project is the blog МАТЕМАТИКА telling stories of ten women in mathematics in Russia. Now I am working on a documentary film about girls in mathematics and a related book.I am very interested in sociology, education sciences, and very eager to work in interdisciplinary science. If you have an idea of a project to do together, write to me!I am happy to be part of SNCS (National syndicate of researchers), SMF (Société Mathématique de France) and Femmes et mathématiques. I am a member of EMS Raising Public Awareness Committee and a member of scientific council of IMéRA.If you are interested in some of my endeavours (research, outreach and art), subscribe to my newsletter ! (which is mostly in French and sporadically in English).
Institut de Mathématiques de Marseille (I2M)
39, rue Frédéric Joliot Curie
13453 Marseille Cedex 13
mail : 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)
Recreational mathematics seminar started as a weekly seminar in the House of Mathematics and Informatics in Lyon MMI. I have created it in 2014 and co-organized this seminar with M. Lhuissier, V. Borelli, V. Seigneur, A. Rivera, L. Mathis and B. Sevennec. The seminar is still ongoing, even though organizers and format changed (but there still is cake to eat!), check out their Facebook page.
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 the 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)
Here is a list of my preprints and publications, with when possible links to videos of talks and slides. All my math articles and preprints are on arxiv.
WORK IN PROGRESS
[A] O. Paris-Romaskevich Trees and flowers on a billiard table, rewrite in progress
first version of the article (submitted on 10/2019) hal-02169195
a short animated movie Refraction tilings by Ofir David
a poster presented at Illustrating Mathematics, Providence in 2019 and a highlight note prepared for NSF
a short article in French (6 pages) for a Newsletter of l'INSMI
a talk in Russian at Zoomerfest seminar
a talk at Resistencia Dynamica seminar, with a presentation of MATEMATИКА project
[B] I. Dynnikov, P. Hubert, P. Mercat, O. Paris-Romaskevich, A. Skripchenko Novikov gasket has zero Lebesgue measure, work in progress
slides in French for a talk in Jussieu (June 2020)
"Novikov's problem and tiling billiards" , video of a talk at a conference on Billiards and geometric optics, CIRM, October 2021
[C] P. Hubert, P. Mercat, O. Paris-Romaskevich Almost all minimal 4-reflections are not weakly mixing, work in progress
 S.Cantat, O. Paris-Romaskevich , J. Xie Free actions of large groups on complex threefolds, Bulletin of London Mathematical Society (2022), journal
 O. Paris-Romaskevich Tiling billiards and Dynnikov's helicoid, arxiv: 2102.10201, Transactions of the Moscow Mathematical Society, 82:1, 157-174 (2021)
slides in French for a talk at Groupes et Géometrie seminar
 S.Cantat, O. Paris-Romaskevich Automorhisms of compact Kähler manifolds with slow dynamics, Transactions of American Mathematical society, journal (2020) | arxiv:2002.03615, hal-03089240
slides for Dynamics on your screen conference (August 2020)
 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
 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
 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 math experiment by Dan Reznik
 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
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.
Co-authors (in chronological order of collaboration)
Here are s a (July 2021) version of my CV in French and my LinkedIn account.
INITIAL SPACE-TIME COORDINATES
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)
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.
Cinema club in Lyon -- Bobines de sciences
I organise a cinema-club CinéMaths (2018-23) and soon Bobines de Sciences (2023+) as a collaboration with a House of Math and Informatics (MMI) and a cinema Comœdia. For me this ciné-club is an occasion to have an active social engagement as a scientist, and make a science a tool for democracy. To come to CinéMaths, please make a reservation (a couple of weeks before the date of the event) on the site of the cinema. Here is the list of five meetings of this year.
Programme Ciné Mathématiques 2022/2023
Marcher sur l'eau, samedi 8 octobre 2022, 11h Un documentaire de Aïssa Maiga sur la pénurie d'eau à Niger, réservations pour la séance sont ouvertes
Madame Hyde, samedi 17 décembre 2022, 11h Une comédie fantastique de Serge Bozon entre l'enseignement de la physique et la folie, avec Isabelle Huppert
La fièvre de particules, samedi 25 février 2023, 11h Un documentaire intense de Mark Levinson tourné dans les laboratoires de physique et au CERN quelques semaines avant la découverte du boson de Higgs, réservations pour la séance sont ouvertes
I am your man, samedi 18 mars 2023, 11h Une comédie dramatique (et romantique) de Maria Schrader, un essai sur ce que c'est l'amour et une vision rêveuse de ce que les neurosciences pourraient proposer au monde, séance gratuite sur inscription dans le cadre de la Semaine du cerveau
La bataille de l'eau noire, samedi 17 juin 2023, 11h Un film sur la résistence citoyenne dans une ville de Couvin autour d'un mouvement populaire joyeux et efficace, tourné par Benjamin Hennot
My work for movies on math (done and in progress)
Je voudrais vous parler de mathématiques (2018, co-created with Coralie Gourdon). This movie was done in 48h and won a coup de cœur of the jury atPariScience2018 festival
Pique-nique sur le plan complexe (2021, script writing with Denis van Waerbaeke, movie director. This movie is a part of a series Voyages aux pays des mathématiques aired on ARTE.
(in writing) Two episodes for the second season for Voyages aux pays des mathématiques (directed by Denis van Waerbaeke), one of which is Alicia aux pays des polytopes telling the story of Alicia Boole Stott and her discoveries of geometry in dimension 4.
(in writing) One episode for the mathematical history and culture series of Cassia Sakarovitch Grande Aventure des Mathématiques
short movie experiences
Here are some of my personal filmic experiences : Ten trees, Une grue et une abeille and Poissons du Rhône. I also did several trailers for friendly theater companies in collaboration with Bertrand Paris-Romaskevich.
Upcoming events for 2022-2023
Here are the research conferences we can meet each other, outreach activities in which I participate, as well as some artistic projects and events. And join Cinémaths and Street math !
-- 27 February -- 3 March (workshop/residence) writing our book Matheuses with Clémence Perronnet and Claire Marc, CIRM
-- (scientific visit and talk) 18-23 May Scientific visit to Heidelberg
-- (marraine and learning math :)) 30 May-2 June Lectures Kowalevski, Angers
-- 4 - 10 June (workshop/residence) writing our book Matheuses with Clémence Perronnet and Claire Marc, Roscoff station
-- 29 June, Journée parité de communauté mathématique, Lyon
-- 15 March Streetmath at Gerland library
-- 22 March Mathematics of the sky, talk at St-Étienne
-- 17-21 April Les Cigales Edition, Marseille
-- (co-organiser with Rémi Coulon et Arnaud Chéritat) Maths and art: creating together workshop, CIRM, November 2024, Marseille
Matheuses : LES FILLES SONT LE FUTUR DES MATHÉMATIQUES
Matheuses is an ongoing project of a book about girls in mathematics, co-written in collaboration with a sociologist Clémence Perronnet and science mediator Claire Marc. The writing is in progress, we hope to publish the book in the end of 2023!The genesis of the project. This project is born from the encounter between sociology and mathematics. As an organizer of a school for girls in mathematics called Cicadas in CIRM, Marseille, I was interested to answer the two questions. First, why there is a problem with girls in mathematics in France? Why there are not enough female researchers in math, and girls choose less the mathematical professional paths? And second, can we share mathematics with girls without sharing our sexism? These are two questions I was not sure to master... I turned to sociology! I contacted Clémence Perronnet who is a PhD in sociology, consultant at Agence Phare, who works on the questions of culture and socialization with respect to sciences, and she is a specialist of social and gender inequality with respect to scientific culture. With Alice Pavie, PhD student in sociology, they conducted a 2-week sociological observation study at our math school.Presentation of research project (by Clémence Perronnet). This research project aims to investigate the relationship between mathematics and society by focusing on the discovery and practice of mathematics among young people. The goal is to uncover the social processes and conditions that influence individuals' attitudes and engagement with maths and to better understand social inequalities in relation to science and mathematics. Groups such as women, people from working-class backgrounds and minorities are indeed very underrepresented in scientific fields and careers.This is particularly true for women, and the recent French high school reform has exacerbated this issue, with the proportion of girls studying mathematics in high school declining significantly. The proportion of girls in high school maths suffered a 25-years set back. In 2021, one out of two girls (45 %) no longer study maths in Première (which was the case for only 17 % of girls in 2019).Content of the book. To address this issue, the book will present the findings from a sociological survey conducted during the Cigales workshop, which was the first study of high school girls experiencing the reformed high school. Our book will combine sociology, mathematics, and drawing. This book will be a valuable resource for young girls who love mathematics by providing identification materials, making visible other similar girls and providing tools for overcoming difficulties by making them explicit. Additionally, the book will introduce professionals to sociological research to help them understand the key findings of social science on mathematics and science and to act for inclusion.Intention of the book. We want to transmit what girls themselves think about mathematics, through their personal stories seen through the science of sociology. We want to deconstruct the idea that mathematics is a pure and objective activity, without conflicts of power -- that is false. Mathematics is a social science, responsible for social inequality, that of class and gender.
NEWS OF THE PROJECT
10 October 2022 An article describing the school Cigales is published in in the mathematical gazette (a journal of French Mathematical Society), and re-published on Images des Mathématiques, O. Paris-Romaskevich Vers une médiation en phase avec la société : réflexion autour des Cigales (2022)
15 November 2022 Our project received a support prize Défi diffusion of INSMI at Assises des Mathématiques ! We will be able to pay Claire Marc for her mediation and graphics work, as well as organize two weeks of collaboration on the project.
December 2022 The video of the prize reception is online! You can see our (very nice :)) almost improvized speach at 2:34:30.