Excellence Initiative - Research University

University Centre of Excellence “Dynamics, Mathematical Analysis and Artificial Intelligence”

Contactul. Gagarina 11, 87-100 Toruń
e-mail: damsi@umk.pl

Dynamics and Ergodic Theory

Scientific visits, conference and seminar talks


2020

Przemysław Berk

  1. Post-doc position in Univeristy of Rouen (France), 9.2019-9.2020.
  2. Post-doc position in University of Zurich (Switzerland), 9.2020-9.2021.

Bartosz Bieganowski

  1. Research visit to Karlsruhe Institute of Technology (Germany), 10-14.02.2020; seminar talk: Bound states for the Schrödinger equation with mixed-type nonlinearites.
  2. Online seminar, the Polytechnic University of Lodz (Poland), 15.05.2020; seminar talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.

Aurelia Dymek

  1. Wandering Seminar. A conference on Ergodic Theory and Dynamical Systems, Gdańsk (Poland), 27.02-1.03.2020, talk: Automorphisms of B-free systems.

Krzysztof Frączek

  1. Visiting professor in Université de Rouen Normandie, 5-11.01.2020; Groupe de travail en Probabilités, seminar talk: Théorie Ergodique et Systèmes Dynamiques pt. On the billiard flow on nibbled ellipses.
  2. Online seminar, Séminaire de Systèmes Dynamiques-Paris, 3.07.2020; seminar talk: Recurrence of a.a. elements for smooth curves in the moduli space of translation surfaces and two applications.

Anna Gołębiewska

  1. Conference “Celestial mechanics and beyond” Puebla (Mexico), 9-13.03.2020; talk: Continuation of closed orbits from equilibria of Hamiltonian systems with Coriolis forces.

Joanna Kułaga-Przymus

  1. Online seminar, Dynamical Systems Seminar, Jagiellonian University, 9.10.2020; seminar talk: Entropy rate of product of independent processes.
  2. Online seminar, Dynamics Seminar, University of Maryland, 12.11.2020; seminar talk: Entropy rate of product of independent processes.

Mariusz Lemańczyk

  1. Visiting professor in Université de Normandie (Rouen) – February 2020.

2021

Przemysław Berk

  1. Workshop “Dynamische Systeme”, Oberwolfach, 11-17.07.2021, talk: Disjointness of translation flows with their inverses.
  2. Conference “SwissMAP Annual General Meeting”, Les Diablerets, Switzerland, 12-15.09.2021, talk: Linear rescalings of flows on surfaces.

Bartosz Bieganowski

  1. Conference “XII Forum of Partial Differential Equations”, Będlewo, 19-25.09.2021, invited talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.
  2. Seminar Differential Equations and Dynamical Systems at Faculty of Pure and Applied Mathematics, Wroclaw University of Science and Technology, 18.10.2021, seminar talk: Fractional Schroedinger equations with Hardy-type potentials.

Aurelia Dymek

  1. Online seminar, Dynamical Systems Seminar, Jagiellonian University, 26.03.2021, seminar talk: Topological dynamics of multidimensional B-free systems: proximality, minimality and the maximal equicontinuous factor.
  2. Online seminar, Ergodic Theory Seminar, Ohio State University, 26.08.2021, seminar talk: Topological dynamics of (multidimensional) B-free systems.

Krzysztof Frączek

  1. Conference ”First Dynamical Systems Summer Meeting’’, 16-20.08.2021 Będlewo, invited talk: Recurrence for smooth curves in the moduli space of translation surfaces.

Minsung Kim

  1. Probability seminar, IMPAN, Sopot 4.11.2021, seminar talk.
  2. Analysis seminar, Saitama University, Saitama, Japan (online), 4.10.2021, seminar talk.
  3. Seminar in Ergodic theory and Dynamical systems, POSTECH, Pohang, Korea (online), 15.9.2021, seminar talk.
  4. Seminar in Ergodic theory and Dynamical systems, KIAS, Seoul, Korea (online), 11.8.2021, seminar talk.

Tomasz Klimsiak

  1. Seminar: Non-local operators, probability and singularities, Wrocław University of Science and Technology (Poland), Faculty of Pure and Applied Mathematics, seminar talk: Schrödinger equations with smooth measure potential and general measure data, 25.05.2021.

Joanna Kułaga-Przymus

  1. “8th European Congress of Mathematics”, 20-26.06.2021, Portoroz. Invited (online) talk („A journey from pure to applied mathematics” section): On arithmetic functions orthogonal to deterministic sequences.
  2. Conference “First Dynamical Systems Summer Meeting”, 16-20.08.2021, Będlewo. Invited talk: Entropy rate of product of independent processes.

Mariusz Lemańczyk

  1. “Maryland Spring Conference” (online) 2021. Invited talk: Spectral theory, Ratner properties and Furstenberg disjointness.
  2. Conference “First Dynamical Systems Summer Meeting”, Będlewo, 16-20.08.2021. Invited talk: On Furstenberg systems of some aperiodic multiplicative functions.
  3. Ohio State University, seminar talk (online): On Furstenberg systems of some aperiodic multiplicative functions.
  4. Excellence Center DAMSI, seminar talk (online): Sarnak’s conjecture on Moebius orthogonality.

2022

Przemysław Berk

  1. Visiting professor, University of Zurich, Switzerland, 4.09-10.09.2022.
  2. Conference “Combinatorics, Dynamics and Geometry on Moduli Spaces”, 19.09-23.09, Marseille, France, poster: Backward Rauzy-Veech Algorithm and Horizontal Saddle Connections.

Jamerson Bezerra

  1. Visiting professor, Faculty of sciences of Lisbon University, 01-05.02.22, Lisbon, Portugal.
  2. Visiting professor, IMPA, 13-26.02.22, Rio de Janeiro, Brasil.
  3. Visiting professor, Ecole Polytechnique 08-24.04.22, Paris, France.
  4. Visiting professor, Faculty of sciences of Lisbon University, 07-14.07.22, Lisbon, Portugal.
  5. Visiting professor, Federal University of Alagoas, 03-13.09.22, 02-23.10.22, Alagoas, Brasil.
  6. LxDS seminar, Faculty of sciences of Lisbon University, Portugal, 02.02.22, seminar talk: Analiticity of Lyapunov exponents of random product of quasi-periodic cocycles.
  7. Workshop ”New trends in Lyapunov exponents”, Lisbon, Portugal, 07-11.02.22, talk: Geometric upper bound for the regularity of Lyapunov exponent of random product of matrices.
  8. Dynamical systems seminar (online), Porto University, Portugal, 04.03.22, seminar talk: Regularity of Lyapunov exponents of random product of matrices.
  9. Workshop ”Topology and dynamics” (online), Fluminense Federal University, Brazil, 09-16.03.22, talk: Positivity of the Hausdorff dimension of generic dynamically defined Lagrange spectra.
  10. LxDS seminar (online), Faculty of sciences of Lisbon University, Portugal, 23.03.22, seminar talk: Positivity of the Hausdorff dimension of generic dynamically defined Markov and Lagrange spectra.
  11. Ergodic theory and dynamical systems seminar, Federal University of Alagoas, Brazil, 09.09.22, seminar talk: Lyapunov exponents of linear cocycles.
  12. Ergodic theory and dynamical systems seminar (online), POSTECH, Korea, 19.10.22, seminar talk: Regularity of the Lyapunov exponent of random product of matrices.

Bartosz Bieganowski

  1. Conference “Nonuniformly elliptic problems”, 05-09.09.2022, Warszawa, invited talk: Strongly indefinite variational problems with sign-changing nonlinearities.
  2. Conference “Topics in variational problems arising from models in physics”, 24-29.07.2022, Będlewo, invited talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.
  3. Conference “Equadiff”, 11-15.07.2022, Brno, Czechia; invited (within a mini-symposium) talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.
  4. “School on nonlinear PDEs”, 15-21.05.2022, Warszawa, invited talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.
  5. Confrerence “Recent trends in nonlinear and dispersive equations: equilibria, stability, dynamics”, 01-07.05.2022, Będlewo, invited talk: Normalized ground states of the nonlinear Schrödinger equation with at least mass critical growth.

Rodrigo Bissacot

  1. Visiting professor, Universite de Bordeaux, France,15-29.05.2022.
  2. Visiting professor, Universitity of Sao Paulo (USP), Brazil, 13-28.10.2022.
  3. Applied Mathematics Seminar – SOTO 80. In memoriam of Jorge Sotomayor. Federal University of Itajuba, UNIFEI. Itajuba, Brazil, 26.04.2022, seminar talk: Mathematical Phase Transitions.

Klaudiusz Czudek

  1. “2022 PIMS-CRM Summer School in Probability”, 30.05-15.06.2022, Vancouver, Canada, talk: CLT for additive functionals of random circle rotations.
  2. “Minikonferencja PTM”, 2-3.06.2022, Warsaw (online, in Polish), talk: Centralne twierdzenie graniczne dla losowych obrotów okręgu.
  3. Conference “Geometry of deterministic and random fractals”, 27.06-1.07.2022, Budapest, Hungary, talk: Counterexamples to CLT for random rotations.
  4. Conference “Probabilistic methods in random and time-varying dynamical systems”, 2.10-7.10.2022, Luminy, France, (invited speaker), talk: Simple symmetric random walks on the circle.
  5. Institute of Mathematics-Universidade Federal do Rio de Janeiro, Dynamical systems seminar, 6.05.2022, online seminar talk: CLT for random rotations.
  6. Wrocław University, Seminar of probability theory and stochastic modelling, 26.05.2022, seminar talk: CLT for random rotations.
  7. IM PAN, Dynamical systems seminar, 19.09.2022, seminar talk: Simple symmetric random walks on the circle.
  8. IM PAN, Seminar of aproximation theory and stochastic analysis, 20.10.2022, seminar talk: Simple symmetric random walks on the circle
  9. KTH Royal Institute of Technology, Stockholm, Sweden, 20.10.2022, online seminar talk: Simple symmetric random walks on the circle.

Krzysztof Frączek

  1. Visiting professor, Institute for Advanced Studies, Princeton, USA,7-16.11.2022.
  2. Visiting professor, University of Maryland, College Park, USA, 16-25.2022.
  3. Seminar on Dynamical Systems at IMPAN, 21.02.2022, online seminar talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  4. Special Year Research Seminar, Institute for Advanced Studies, Princeton, USA, 8.11.2022, talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  5. Dynamical Systems Seminar, University of Maryland, College Park, USA, 22.11.2022, talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.

Anna Gołębiewska

  1. Conference “Topological Methods in Nonlinear Analysis: Recent Advances; Professor Andrzej Granas Memorial Conference’’, 4-8.07.2022, Montreal, Canada, invited talk: Global bifurcation from equilibria of autonomous Hamiltonian systems.
  2. Conference “New Trends on bifurcations in ordinary differential equations’’, 6-9.09.2022, Barcelona, Spain, talk: Global bifurcation of closed orbits from equilibria of Hamiltonian systems.

Aleksander Gomilko

  1. Conference “33rd International Workshop on Operator Theory ana Applications – IWOTA 2022”, 6-10.09.2002, Kraków, Poland, talk: A new approach to rational approximation of operator semigroups.

Minsung Kim

  1. Visiting professor, Centro De Giorgi (Sculola Normale Superiore), Pisa, Italy, April 26 – 30, 2022.
  2. Visiting professor, Universita di Roma (Tor Vergata), Rome, Italy, June 12 – 19, 2022.
  3. Zoominar in Dynamical Systems at Porto, June 2022, online seminar talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  4. Ergodic theory and Dynamical systems, POSTECH, Pohang, Korea, May 2022, online seminar talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  5. Dynamics seminar, Centro De Giorgi (Sculola Normale Superiore), Pisa Apr 2022, seminar talk: Effective equidistribution for generalized higher step nilflows.
  6. Dynamics seminar, IMPAN (Polish Academy of Sciences), Warsaw, Poland, March 2022, seminar talk: Effective equidistribution for generalized higher step nilflows.

Tomasz Klimsiak

  1. Conference “Probability and Analysis 2022”, Wrocław, 19-23.09.2022, talk: Asymptotics for degenerate logistic equations with Dirichlet fractional Laplacian.
  2. Conference “Advances in Stochastic Control and Optimal Stopping with Applications in Economics and Finance”, 12-16.09.2022, CIRM Luminy, France, talk: Reflected BSDEs with integrable data – existence, a priori estimates and related non-linear Dynkin games.
  3. Conference “IFIP TC7 System Modeling and Optimization”, 4-8.07.2022, Warsaw University of Technology, invited lecture: Non-semimartingale solutions to reflected BSDEs with applications to non-linear Dynkin games.
  4. “MFO-RIMS Tandem Workshop: Nonlocality in Analysis, Probability and Statistics”, 20-26.03.2022, Oberwolfach, Mathematisches Forschungsinstitut Oberwolfach, Germany, invited lecture: Elliptic (non-local) PDEs with singular data – the method of orthogonal projection.
  5. Conference “Kolmogorov operators and their applications”, 12-18.07.2022, Cortona, Italy, invited lecture: Strong maximum principle for local and non-local Schrodinger operators with singular potential.
  6. Wrocław University of Science and Technology, Seminar on Markov Semigroups and Schroedinger Operators, 29.04.2022, seminar talk: Lematy typu Hopfa dla podrozwiazan równan całkowo-rózniczkowych.

Joanna Kułaga-Przymus

  1. Dynamical Systems seminar, The Open University, UK, 1.06.2022, online seminar talk: Around Sarnak’s conjecture.

Mariusz Lemańczyk

  1. Conference “ICM 2022”, invited online talk: Furstenberg disjointness, Ratner properties and Sarnak’s conjecture.
  2. Conference “Dynamics Week in Jerusalem, Ergodic Theory and Beyond”, 1-8.07.2022, online talk: Furstenberg disjointness, Ratner properties and Sarnak’s conjecture.
  3. Conference “Elementare und Analytische Zahlentheorie (ELAZ)”, 22-26.08.2022, Poznań; plenary talk: On autocorrelations of some aperiodic multiplicative functions.
  4. Conference “Recent Advances in Dynamics, Geometry, and Number Theory. Conference in honor of Svetlana Katok’s birthday”, 28.08.2022 PennState University, USA, talk: On Furstenberg systems of some aperiodic multiplicative functions.
  5. Penn State University: two seminar talks Furstenberg disjointness and Sarnak’s conjecture and Möbius orthogonality in topological models of ergodic automorphisms.
  6. Visiting professor, Penn State University, USA, 29-31.08.2022.
  7. Membership, Institute for Advanced Studies, Princeton, USA, 1.09.2022-31.07.2023.

Jarosław Sarnowski

  1. Research visit, UAM, Poznań, December 2022.

Daniel Sell

  1. “Summer School on Aperiodic Order”, 6-9.09.2022, Edmonton, Canada, talk: Periodic structures in B-free Toeplitz subshifts.
  2. “Workshop on Functional Analysis, Operator Theory and Dynamical”, 19-22.09.2022, Potsdam, Germany, talk: About endomorphisms of B-free, B-admissible subshifts.

Yuriy Tomilov

  1. Conference „Special Session of PTM”, IM PAN, 2-3.06.2022, talk: O reprezentacjach macierzowych operatorów liniowych na przestrzeni Hilberta.
  2. “International conference on operator theory and its applications (IWOTA)”, Kraków, Poland, 06-10.09.2022, two talks (semi-plenary and invited): Functional calculi for semigroup generators: in depth, around and beyond. What can spectral theory do for (nonlinear) instability?
  3. Functional Analysis Seminar, Delft University of Technology, 12.02.2022, seminar talk: A Besov algebra calculus for semigroup generators and its applications.

2023

Przemysław Berk

  1. Visiting professor, 26.02-04.03.2023, Institute Fourier, Grenoble, France.
  2. Visiting professor, 23.04-29.04.2023, University of Vienna, Austria.
  3. Visiting professor, 14.06-14.07.2023, Universität Zürich, Switzerland.
  4. Visiting professor, 6.09-30.09.2023, University of Utah (Salt Lake City) and University of Maryland (College Park), USA.
  5. Visiting professor, 8.12-14.12.2023, Université de Rouen Normandie, France.
  6. Séminaire de Topologie, Institute Fourier, Grenoble, France 3.03.2023, seminar talk: Ergodicity of skew products over symmetric interval exchange transformations.
  7. Seminar Ergodic Theory and Dynamical Systems, University of Vienna, Austria, 27.04.2023, seminar talk: Ergodicity of skew products over symmetric interval exchange transformations.
  8. Max Dehn Seminar on Geometry, Topology, Dynamics, and Groups, University of Utah, Salt Lake City, USA, 13.09.2023, seminar talk: Disjointness of translation flows with their inverses.
  9. Dynamics Seminar, University of Maryland, College Park, USA, 28.09.2023, seminar talk: Ergodicity of infinite symmetric extensions of IETs.
  10. Seminar on Dynamical Systems at IMPAN, Warszawa, 23.10.2023, seminar talk: Rigidity of linearisation for piece-wise smooth circle maps.

Jamerson Bezerra

  1. Visiting professor, Centro di Ricerca Matematica Ennio De Giorgi, Scuola Normale Superiore at Pisa, Italy, 25-31.03.2023.
  2. Visiting professor, Faculty of sciences of Lisbon University, Portugal, 09-20.07.2023.
  3. School and Workshop “Ergodic theory and parabolic dynamics”, Warszawa, Poland, 22.05.23-03.06.23, talk: Regularity of Lyapunov exponent of linear cocycles.

Bartosz Bieganowski

  1. Visiting professor, 11-15.09.2023, Politecnico di Bari, Italy.

Aurelia Dymek

  1. Postdoc position in University of Vienna, 6.02-4.08.2023, supervisor: prof. Henk Bruin, research on chaos in B-free subshifts.
  2. Seminar on Ergodic Theory and Dynamical Systems University of Vienna, seminar talks: Minimality of B-free systems (in number fields), 2.09.2023 and 9.09.2023.

Krzysztof Frączek

  1. Visiting professor, Scuola Normale Superiore di Pisa, Italy, 26.02-04.03.2023.
  2. “DynamIST Seminar”, Institute of Science and Technology Austria, Klosterneuburg, 14.02.2023, seminar talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  3. “Seminari di Sistemi Dinamici”, Scuola Normale Superiore di Pisa, Italy, 02.03.2023, seminar talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  4. Conference “Probability and Dynamics”, Roscoff, France, 08-12.05.2023, talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces.
  5. “Conference on Dynamics and Finance: from KAM Tori to ETFs”, Trieste, Italy, 09-13.10.2023, talk: Deviation spectrum of ergodic integrals for locally Hamiltonian flows on surfaces

Anna Gołębiewska

  1. “Workshop on Differential Equations and Their Applications”, 02-08.07.2023, Będlewo, Poland, talk: Bifurcation of closed orbits from equilibria of Newtonian systems with Coriolis forces.

Stanisław Kasjan

  1. Visiting professor, IAS Princeton, USA, 04-11.06.2023.

Tomasz Klimsiak

  1. Conference “Nonlocal Operators and Markov Processes”, Będlewo, 20-24.03.2023, talk: Harmonically small solutions to the Dirichlet problem for semilinear partial integro-differential equations.
  2. Conference “Stochastic modeling and control”, 8-13.05.2023 Będlewo, Poland, talk: Nonlinear reflected BSDEs and their applications to Dynkin games: beyond the semimartingale framework.

Joanna Kułaga-Przymus

  1. Visiting professor, 20-26.02.2023, Princeton IAS, USA.
  2. “Workshop on Dynamics, Discrete Analysis and Multiplicative Number Theory”, 27.02-04.03.2023, Institute for Advanced Study, Princeton, USA, talk: Thermodynamic Formalism for B-free Dynamical Systems.
  3. Conference “Thermodynamic Formalism: Non-additive Aspects and Related Topics”, 16-17.05.2023, Będlewo, talk: Thermodynamic formalism for B-free systems.
  4. Conference “Numbers in the Universe: recent advances in number theory and its applications”, 9-11.08.2023, Warsaw/Kiev, Poland/Ukraine, talk: Introduction to Sarnak’s conjecture – II.
  5. Conference Journées de dynamique, 4-6.10.2023, Paris, France, talk: Invariant measures for B-free systems and beyond.

Mariusz Lemańczyk

  1. Special Year Research Seminar, Institute for Advanced Studies, Princeton, USA, 17.01.2023, seminar talk: On Furstenberg systems of a class of multiplicative functions.
  2. Dynamical Systems Seminar, University of Maryland, College Park, USA, 2.05.2023, seminar talk: Characteristic classes in ergodic theory and Sarnak’s conjecture.
  3. Conference “Numbers in the Universe: recent advances in number theory and its applications”, 9-11.08.2023, Warsaw/Kiev, Poland/Ukraine, talk: Introduction to Sarnak’s conjecture – I.

Stavroula Makri

  1. Workshop “Topology BTW3: Morse and Floer Theories”, 30 January-03 February 2023, CIRM, France, talk: The Fukaya category.

Graccyela Salcedo

  1. Research visit, Department of Mathematics, Jagiellonian University, 01.10.2023- 07.10.2023, Krakow.
  2. Dynamical Seminar at the Jagiellonian University, Kraków, 06.10.2023, seminar talk: Contracting on average IFSs on the circle by a metric change.
  3. Research visit, Laboratoire d’Analyse et de Mathematiques Appliquees of Universite Gustave Eiffel. 16 – 27.10.2023, Paris.


Jarosław Sarnowski

  1. Seminar of Operator Theory at Adam Mickiewicz University in Poznań, Poland, seminar talks 03.01.23 and 10.01.23.
  2. Conference IWOTA (Internation Workshop on Operator Theory), 30.07.23-05.08.23, Helsinki, Finland, talk: Extrapolation of boundedness of periodic Fourier multipliers.

Daniel Sell

  1. Research visit at Friedrich Schiller University Jena (Germany); 10.04.2023 – 16.04.2023.
  2. Research Seminar on Dynamical Systems and Mathematical Physics, 13.04.2023, Friedrich Schiller University Jena, Germany, seminar talk: Finitely many asymptotic classes in Toeplitz subshifts.
  3. 10th Visegrad Conference on Dynamical Systems, 29.06-01.07.2013, Łódź University, talk: On invariant measures of B-free subshifts.
  4. The annual conference of the German Mathematical Society (DMV), 25-28.089.2023, Technische Universität Ilmenau, Germany, talk: On entropy and invariant measures of B-free subshifts.

Yuriy Tomilov

  1. Visiting professor, Technical University Dresden, Germany, 03.02-11.02.2023.
  2. Visiting professor, Institute of Mathematics of the Czech Academy of Sciences, Prague, 31.03-14.03.20223.
  3. Session of laureates of Mlak and Opial Prize, 1-3.03.2034, Kraków, talk: Teoria operatorów a asymptotyka rozwiązań równań nieliniowych.
  4. “34th International Workshop on Operator Theory and its Applications” (IWOTA), Helsinki, Finland, 31.07-04.08.2023, two talks: Instability for semilinear evolution equations via operator theory, Rational Approximations of Semigroups Revisited.