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### Curriculum Vitae

 Name: Mariusz Tomasz Lemañczyk, Date of birth: 3.02.1958, Place of birth: Toruñ Status: married, Number of children: 2, Education: 1965-1973: Primary School in Chojnice, 1973-1977: Secondary School (Liceum im. Filomatów) in Chojnice, 1977-1981: Nicolaus Copernicus University in Toruñ. Qualifications: - master of mathematics (master thesis: Nonsurjective epimorphisms in the epireflective subcategories of \Sigma-models"), N.C. University 1981, - doctor of mathematics (dissertation: Ergodic properties of Morse sequences"), N.C. University 1985, - doctor habilitated (habilitation: Ergodic Compact Abelian Group Extensions of Rotations"), Warsaw University 1991, - title of professor, 1998. Posts held (at Nicolaus Copernicus University): 1981-1983: younger assistant, 1983-1984: assistant, 1984-1986: older assistant, 1986-1992: adiunkt, 1992-2002: professor, 2002-: full professor. Administration positions, membership in councils and scientific councils: 1999-2005 - vice-dean for science of the Faculty of Mathematics and Computer Science of Nicolaus Copernicus University (two terms), 2005-2008 - dean of the Faculty of Mathematics and Computer Science of Nicolaus Copernicus University, 1999-2008 - member of Senat of Nicolaus Copernicus University, 1996-2014 - member of the Scientific Council of the Institute of Mathematics of Polish Academy of Sciences. Visiting professor: 5.05.-16.05.1986: Université Paris-Nord and Paris VI, 13.01.-13.02.1987: The University of Maryland, 11.05.-11.06.1987: Université de Bourgogne, 17.08.-30.08.1987: The Delft University, 29.08.-5.10.1988: Université de Provence and Paris VI, 12.09.-12.10.1989: Université de Bourgogne, 8.11.-8.12.1989: The Toronto University, 4.01-17.03.1990: Université de Provence and Paris VI, 1.02-1.03.1992: The Maryland University, 10.11-14.12.1992: Keio University, 1-14.02.1993: Université de Bourgogne, 16.06-5.07.1993: University of Toronto, 1.03-1.07.1994: Université de Rouen, 7-19.09.1994: Charles University, Prague, 21.01-21.07.1995: Université Paris VI, 21.08-2.09.1995: Korean Adv. Inst. Sc. Technology, Taejon, 17-23.09.1995: Charles University, Prague, 7.02-28.02.1996: Université Paris XIII, 1.03-31.05.1996: Université de Rouen, 1.06-31.08.1996: Université de Luminy, 1.12-22.12.1996: Toronto University, 8.02-8.03.1997: E. Schrödinger Institute, Vienna, 1.07-30.09.1997: Université de Luminy, 1.10.1997-28.02.1998: Université de Tours, 13.04-22.04.1999: Institute of Low Temperature in Kharkov (also Institute of Mathematics of Ukrainian Academy of Sciences in Kiev), 8-19.09.1999: Université Paris 13, 17-31.10.1999: Hebrew University in Jerusalem, 15-27.05.2000: Schrödinger Institute (Wien), 7.04-14.04.2000: Technical University in Delft, 1.09.2000-31.08.2001: Université Paris 13, 18-25.11.2001: MGU Moscow, 7.06.-14.06.2002: Université Paris 13, 14.06-27.06.2002: Toronto University, 16.11.-29.11.2002: Tel Aviv University (also H.U. of Jerusalem and Beer Sheva University), 2-6.10.2003: KTH Stockholm, 30.01.-28.02.2004: Université Paris 6, 20.04-20.05.2004: Université de Brest, 1.07-31.07.2004: Max Planck Institute in Bonn, 20.10-20.11.2004: Penn State University, 31.01.-13-02.2005: University of Toronto, 20.06-20.07.2005: Université de Tours, 10.12-17.12.2005: Institut of Low Temperature, Kharkov, 28.01-4.02.2006: Institut fuer Mathematische Stochastik (Goettingen), 18.11-17.12.2006: Université Paris 13, 10.06-18.06.2007: Université de Rouen, 27.01-7.02.2008: Hebrew University of Jerusalem and Tel Aviv University, 1.10-1.12.2008: MSRI, Berkeley, 1.12-15.12.2008: Colorado State University, Fort Collins, 2.01-31.03.2009: Ohio State University, Columbus, 15.04-30.06.2009: Université de Tours, 17.09-23.09.2009: Université Marseille II (Luminy), 24.09-16.10.2009: Université de Tours and Université Paris 13, 3.11-3.12.2009: Université Lille I, 7-21.04.2010: Ohio State University, Columbus, 6.11-16.11.2010: Moscow State University, 21.07-1.08.2011: Ohio State University, 24.06-6.07.2012:Institute for Low Temperature, Kharkov, 1.09-30.09.2012: Universite de Rouen, 4.07-12.07.2013: Institute for Low Temperature, Kharkov, 5.09-17.09: Universite de Roeun, 17.09-1.10.2013: Keio University, 19.04-23.04.2014: Bielefeld University, 26.06-30.06.2014: Toronto University, 1.07-6.07.2014: Bielefeld University, 1.09-15.09.2014: Universit\'e de Marseille (Luminy), 15.09-4.10.2014: Universit\'e de Rouen, 1.11-1.12.2014: Auckland University, 15-28.02.2015: University of Crete in Heraklion, 11.06-5.07.2015: Universit\'e de Rouen, 22.07-22.08.2015: Universit\'e d'Aix-Marseille, 29.08-31.10.2015: Universit\'e de Rouen, 22-27.04.2016: Universit\'e d'Amiens, 11-22.02.2017: Vienna University of Technology, 14-24.05.2017: CIRM (Marseille). Research in Pairs (Sarnaks's conjecture - what's new), 26.08-1.09.2017: Institute for Advanced Studies, Princeton, 2-13.09.2017: Ohio State University (Columbus), 24.01-7.02.2018: Penn State University (State College), 30.01-1.02.2018: Institute for Advanced Studies (Princeton), 14-17.02.2018: Tel Aviv University, 11-15.04.2018: University of Geneva, 11-20.05.2018: Institute for Low Temperature (Kharkov), 4-10.11.2018: University of Kiel. International Conferences: - International Congress of Mathematicians, Warszawa 1983 (c), - Ergodic Theory and Related Topics II, Georgenthal 1986 (l), - Smooth Ergodic Theory, Warwick 1986 (l), - Arithmétique et Codes, Luminy 1987 (l) , - Théorie Ergodique des Nombres, Luminy 1988 (l), - Ergodic Theory and Dynamical Systems, Szklarska Porêba 1989 (l), - Ergodic Theory and Related Topics III, Güstrow 1990 (l), - Ergodic Theory, Luminy 1991 (l), - Perspectives of Mathematics, Barcelona 1991 (l), - Ergodic Theory of Amenable Group Actions, Berkeley 1992, - New Bases for Engineering Science, Okayama 1992 (l), - Algorithm, Dynamics and Fractals, Kyoto 1992 (l), - Abstract Analysis, Srni 1993 (l), - Dynamical Systems, Aachen 1993 (l), - Harmonic Analysis and Ergodic Theory, Alexandria 1993 (l), - Special Year in Dynamical Systems, Warwick 1994 (1-24.07.1994) (l), - Ergodic Theory, Dynamical Systems, Invariant Measures and Applications to Number Theory, Delft 1994 (l), - Ergodic Theory and Dynamical Systems, Toruñ 1994, - Abstract Ergodic Theory, Warsaw 1995 (l), - Ergodic Theory, Churanov 1996 (l), - Ergodic Theory and Dynamical Systems, Berlin, 1996 (l), - Ergodic Theory, Churanov 1997 (l), - Ergodic Theory and Dynamical Systems, Szklarska Porêba 1997 (l), - Ergodic Theory, Rouen 1999 (l), - Ergodic Theory and Dynamical Systems, Katsivelli (Ukraine) 2000 (l), - Ergodic Theory and Dynamical Systems, Toruñ 2000, - Ergodic Theory and Dynamical Systems, Paris 2001 (l), - Ergodic Theory and Dynamical Systems in honour of 60th birthday of Professor Jan Kwiatkowski, Toruñ 2002 (l), - Holomorphic Dynamics, Warsaw 2002, - Hayashibara Forum, Oxford-Warwick, 2003 (l), - Probability in Mathematics: in honour of Hillel Furstenberg on the occasion of his retirement, Jerusalem-Beer-Sheva, 2003 (l), - Workshop on Symbolic Dynamics and Ergodic Theory (celebration of the 60th birthdays of Klaus Schmidt and Peter Walters), Warwick 2003 (l), - Representation Theory, Dynamical Systems, and Asymptotic Combinatorics in honour of 70th birthday of Professor Anatoly Vershik, St. Petersburgh 2004 (l), - Dynamical Systems: from Algebraic to Topological Dynamics, Bonn 2004 (l), - Dynamical Systems and Applications, Roscoff 2005 (l), - Ergodic Theory and Dynamical Systems, Warsaw 2005 (l), - Ergodic Theory and Dynamical Systems, Szklarska Porêba 2006 (l), - Ergodic Theory and Limit Theorems, Rouen 2007 (l), - Ergodic Theory in Infinite Measure, Rennes 2008, - Dynamical Systems, in honor of 60th birthday of M. Misiurewicz, Bêdlewo 2008, - Ergodic Theory, in honor of 60th birthday of F. Parreau, Paris 2008 (l), - Rigidity Phenomena in Additive Combinatorics, Berkeley 2008 (l), - Dynamical Systems and Randomness, Institut H. Poincaré 2009 (l), - 2nd Pingree Park Dynamics Workshop, Colorado 2009 (l), - Progress in Dynamics. A conference on the 65th birthday of Anatole Katok, Institut H. Poincaré 2009 (l), - Topology, Geometry and Dynamics: Rokhlin Memorial, St. Petersbourgh, 2010 (l), - Operator Theory and Applications: Perspectives and Challanges, Hel 2010 (l), - Spring Dynamics, Conference in memory of Dan Rudolph, Maryland 2010, - Dynamical Systems Meeting in Lower Silesia, Trzebieszowice 2010 (l), - Propriéetées stochastiques des systemes dynamiques et marches aléeatoires, Roscoff 2010, - Infinite Ergodic Theory, Rehovot (Weizmann Institute) 2010, on the occasion of the 60th birtday of J. Aaaronson) (l), - 3rd Pingree Park Dynamics Workshop, Colorado 2010 (l), - Spectral Theory of Dynamical Systems, Warsaw 2010 (l), - Ergodic Theorems, Group Actions and Applications, Eilat 2011 (l), - Modern Dynamics and its Interaction with Analysis, Geometry and Number Theory, minisemester (school and conference), Bedlewo 2011, - Joint IMU-PTM meeting, Lodz 2011 (plenary lecture), - Ergodic Theory and Dynamical Systems, Chapel Hill 2012 (l), - Ergodic Methods in Dynamics (in honour of F. Przytycki), Bedlewo 2012 (l), - Williams Ergodic Theory Conference, Williamstown 2012 (l), - Ergodic Theory and Metric Number Theory (in honour of H. Nakada), Tokyo 2012 (l), - Ergodic Theory and Dynamical Systems, Chapel Hill 2013 (l), - Ergodic Theory with Connections to Arithmetic, Heraklion 2013 (l), - Rencontres Arithmetiques de Caen, Caen 2013 (l), - Visegrad Conference on Dynamical Systems, Olsztyn 2013, - Homogenous Dynamics, Unipotent Flows, and Applications (in honour of Marina Ratner), Jerusalem 2013 (l), - Unlikely Intersections, Marseille 2014, - Prime numbers: New perspectives, Marseille 2014 (l), - Probability, Ergodic Theory, Dynamical Systems and related fields (memorial conference of Meir Smorodinsky), Tel Aviv 2014 (l), - Ergodic Theory and Dynamical Systems, Toru\'n 2014, - Pseudo-al\'ea en th\'eorie des nombres, Marseille 2014 (l), - Recent Progress in Dynamical Systems and Related Topics (70th birthday conference of Anatole Katok), Banff 2014 (l), - Ergodic theorems and applications in probability, Eilat 2015 (l), - Ergodic Theory and Combinatorics (65th birthday conference of Vitaly Bergelson), Adger 2015 (l), - Number Theory and Dynamics, Mittag-Leffler Institute 2015 (l), - Workshop on Combinatorics, Number Theory and Dynamical Systems, IMPA 2015 (l), - Frontiers of Operator Dynamics, Luminy 2015, - Ergodic Theory, Fractals and Groups (celebrating 50 years of ergodic theory in Jerusalem), Israel Institute for Advanced Studies, 2015, - Spectral Theory of Dynamical Systems, Bedlewo 2015. Simons semester in Banach Center "Dynamical Systems'' (September-December 2015), - Journ\'ee Amienoise de Syst\`emes Dynamiques, Amiens 2016 (l), - Randomness and Determinism in Number Theory, TU Vienna 2016 (l), - New developmnet around x2 x3 conjecture and other classical problems in Ergodic Theory, Cieplice (celebrating 60 birthday of T. Downarowicz) 2016 (l), - Combining Aperiodic Order with Structural Disorder, Lorentz Center (Leiden) 2016 (l), - Spectral Theory of Dynamical Systems and Related Topics, Luminy (CIRM) 2016, - Ergodic Theory and M\"obius Disjointness, Luminy (CIRM) 2016, - Applications of Ergodic Theory in Number Theory, Luminy (CIRM) 2016, - Ergodic Theory and its Connections with Arithmetic and Combinatorics, Luminy (CIRM) 2016, - Prime numbers and automatic sequences: determinism and randomness, Luminy (CIRM) 2016, - Aperiodic Order, Bielefeld 2017 (l), - Conference on Dynamics in Number Theory and Geometry, Kingston 2017 (l), - Spectral Structures and Toplogical Methods in Mathematical Quasicrystals, Oberwolfach 2017 (l), - Workshop on Infinite Ergodic Theory and Related Fields, Jerusalem 2018 (l), - Ergodic Aspects of Modern Dynamics, Bedlewo 2018, - Modern Developmnent in Algebraic Dynamics: Challanges and Opportunities, Leiden 2018 (l), - Ergodc Aspects of Operator Theory, Kiel 2018 (l). Fellowships and other positions held: Fellowship of the French government - 9 months in France in 1992 (Marseille, Tours, Dijon, Lyon, Paris), Special research position - Institute of Mathematics of Polish Academy of Sciences, 1.10.2009 - 30.09.2010. Special research position - CIRM, holder of the Chair Morlet position: 1.08.2016 - 31.01.2017. Experience: Ergodic theory and dynamical systems: (i) Ergodic properties of measure-preserving systems: - metric invariants (the rank, the centralizer, the sequence entropy, rigidity), - properties of ergodic joinings of transformations, Markov operators, multiplier problem, disjointness in the sense of Furstenberg, - classification of transformations by ergodic joinings, - ergodic theory of Gaussian dynamical systems and other systems of probabilistic origin (Poisson suspensions, \alpha-stable processes), - special flows and smooth systems on low dimensional manifolds, Ratner's property, nilflows, - self-similarity and reversibility problem for flows, - theory of simplicity of joinings for automorphisms, - relative ergodic theory, structure theory of dynamical systems. (ii) Spectral theory of dynamical systems: - constructions of dynamical systems with Lebesgue component of finite multiplicity (Banach problem), - spectral multiplicity problem, - mixing properties of dynamical systems, - spectral theory of smooth flows on surfaces, interval exchange transformations, - spectral theory of Gaussian automorphisms, and other systems of probabilistic origin, - spectral analysis of weighted unitary operators, - rigidity phenomena (including the realization problem of sequences of rigidity or IP-rigidity), ultrafilters and p-limits, - spectral theory for actions of general groups, isospectrality problem, - spectral stability properties for nilflows. (iii) Cohomology of cocycles: - ergodic properties of group extensions of rotations, - cocycles on the circle (smoothness and coalescence property, invariants of cohomology, discrepancy), - Fourier series and ergodicity of circle cocycles, - cohomology of cocycles in pseudo-homogenous Banach spaces, - ergodicity and squashability problem of cocycles for infinite measure-preserving transformations, - ergodic theory of Rokhlin cocycles, - applications of non-singular ergodic theory in classical ergodic theory, - groups of L^\infty-eigenvalues for non-singular automorphisms, - random ergodic theorems with times given by cocycles. (iv) Entropy: - entropy of Gaussian group actions, - entropy and relative entropy in topological dynamics. (v) Ergodic theory in its interactions with arithmetic and (combinatorial) number theory: - Sarnak's conjecture on orthogonality of zero entropy dynamical systems with the Moebius function, - Dynamics of $B$-free sets, - Properties of multiplicative functions, - Non-conventional ergodic theorems, - Ultrafilters, p-limits, polynomial actions of unitary operators. (vi) Topological dynamics: - classification of topological cocycles over distal transformations, - minimal subsets for cylindrical transformations, and Hausdorff dimension of the set of discrete orbits. (vii) Information theory - filtering problem for stationary stochastic signals. Scientific rewards: - Reward of the Minister of Science and High Education for the Ph.D. 1986, - Reward of Polish Mathematical Society for young mathematicians 1986, - K. Kuratowski Reward of Polish Mathematical Society 1987, - Reward of Polish Academy od Sciences 1987, - S. Banach Reward of Polish Mathematical Society 1998, - Reward of the Minister of Science and High Education for scientic achievements 1998, - 24 W. Orlicz Special Lecture, 3.03.2017 at AMU (Poznañ). Editorial committees of international mathematical journals: - Editorial Committee of Colloquium Mathematicum (from 1998 to 2016), - Editorial Committee of Studia Mathematica (from 2006), - Editorial Committee of Ksiêgozbiór Matematyczny. PhD students: - Artur Siemaszko (1996), - Krzysztof Fr¹czek (1998), - Dariusz Skrenty (2003), - Magdalena Wysokiñska (2008), - Joanna Ku³aga (2011), - Agata Piêkniewska (2013), - Adam Kanigowski (2015), - (current) Eugeniusz Dymek, - (current) Aurelia Dymek.
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