Presentations and seminars

Automorphisms of solenoids and Yuzvinskii's formula. Univ. of Warwick,
10/10/88. 
Periodic points for expansive actions of Z2. Univ. of Warwick, 22/5/89.

Connected components for Z^d actions. Univ. of Maryland, 13/9/89.

The adele group and padic entropy. Univ. of Maryland, 11/4/90.

The three dot system is Bernoullian. Univ. of New York at Albany, 1/6/90.

Abramov's (other) formula. Ohio State Univ., 26/7/90.

Entropy for Z^d actions on compact groups. Ohio State Univ., Autumn 1990
(series of seven). 
Dynamical systems of algebraic origin. Ohio State Univ., 3/10/90.

A Z^2 Bernoulli shift. IBM Thomas J. Watson Research Center, Yorktown
Heights, 11/2/91. 
Commuting automorphisms of compact groups. Univ. of Akron, Ohio, 29/3/91.

Entropy and eigenvalues. Univ. Southern California, Los Angeles, 4/4/91.

From eigenvalues to varieties. U.C.L.A., 5/4/91.

Expansive commuting automorphisms. Ohio State Univ., 29/4/91.

A family of Z^2 Bernoulli shifts. C.I.R.M., MarseilleLuminy, 29/5/91. (conference
'Ergodic Theory and Automata'). 
A family of Z^2 Bernoulli shifts. Univ. of Warwick, 13/6/91.

Periodic points for expansive N^2actions. Yale Univ., 30/7/91. (short presentation
at conference 'Symbolic Dynamics' in honour of Roy Adler) 
Entropy and hyperbolicity. Tenn. State Univ., Memphis, 30/8/91.

An ergodic approach to the Sunit theorem. Ohio State Univ., 5/11/91.

Higherorder mixing and the Sunit theorem. Ohio State Univ., 7&14/2/92.

Higherorder mixing for commuting automorphisms. Univ. of Maryland, 12/3/92.

Where are the x2, x3 periodic points? Ohio State Univ., 15/4/92.

A family of Markov shifts with group alphabets. Univ. of Porto, Portugal, 4/8/92 ('International Workshop in Dynamical Systems').

Sunits and higher order mixing. Queen Mary & Westfield, London, 3/11/92.

Entropy and additive relations in fields. Univ. of Warwick, 19/1/93.

Topological dynamics and the colouristic theorems of van der Waerden and Hindman. Univ. of East Anglia, 22/2/93.

Sunits and mixing of all orders. Univ. of Liverpool, 12/3/93.

Ergodic approach to additive relations in fields. Univ. of Reading, 31/3/93 (splinter group at 45th B.M.C.).

Mixing of all orders for special group actions. Ohio State Univ., 25/6/93 (short presentation at conference 'Convergence in Ergodic theory and Probability').

Algebraic flows: five hard proofs of an easy theorem. Ohio State Univ., 29/10/93.

Oriented local entropies for commuting automorphisms. Kansas State University, 25/3/94 (Special Session on Convergence Problems in Ergodic Theory at 981st regional meeting of the AMS).

Zeta functions and Wieferich primes. University of Warwick 15/4/94 (Workshop on Algebraic & Number Theoretic aspects of Ergodic Theory).

Rigidity and Wieferich primes. Ohio State Univ. 10/5/94.

Oriented entropy. Univ. of Warwick, 27/7/94 (Workshop on Ergodic Theory and Statistical Mechanics).

Periodic points for twodimensional systems, T.U. Delft 19/8/94 (Workshop on Ergodic Theory, Invariant Measures and Number Theory).

Higherorder mixing examples, Univ. of Warwick, 15/11/94.

Rigidity in a group of mixing unitary operators, HeriotWatt University, 5/4/95 (splinter group at 47th B.M.C.).

Higherorder mixing examples, Univ. of Bakersfield, California, 19/6/95 (NSFCBMS meeting on Probabilistic Aspects of Single Orbit Dynamics).

Higherorder mixing examples, C.I.R.M., MarseilleLuminy, 4/7/95.

Dynamical Systems of Algebraic Origin, Univ. of Edinburgh, 26/2/96 (Colloquium).

Dynamical Systems Attached to Sintegers, Imperial College, 24/1/97.

Dynamical Systems Attached to Sintegers, Univ. of Warwick, 18/2/97.

Dynamical Systems Attached to Sintegers, Erwin Schrödinger Institute, Vienna,
8/4/97. 
Periodic points in Sinteger systems: typical behaviour, SUNY Albany, Albany, NY, 11/6/97 (New York Journal of Mathematics Conference).

Dynamical Systems associated to rings of Sintegers, University of Liverpool, 15/12/97 (invited speaker at North West Dynamics Seminar).

Dynamical Systems associated to rings of Sintegers, Queen Mary &Westfield, London, 17/2/98.

Dynamical Systems associated to rings of Sintegers, University of Maryland, College Park (UMD/PSU Spring dynamics meeting), 23/3/98.

Lectures on arithmetic dynamical systems, University of Delft, Holland, 2529/5/98.

Is there an elliptic analogue of the Mahler measure entropy?, University of Loughborough, 10/6/98 (East Midlands Mathematical Physics meeting).

Typical arithmetic dynamics?, University of Glasgow, 21/10/98 (Number Th. & Combinatorics Coll.).

Homoclinic cones, University of Warwick, 16/2/99.

Algebraic dynamical systems, Logic and its Neighbours onedaymeeting, LMS, Russel Square, London 15/9/99.

Arithmetic and geometry in Z^d actions, University of Warwick 4/4/00 (Workshop on Ergodic Theory of Z^d actions).

Adelic amoebas and dynamics, Newton Institute, Cambridge (North West Dynamics Seminar), 6/6/00.

Adelic amoebas and dynamics, University of Lancaster 15/6/00.

Adelic amoebas and dynamics, Queen Mary & Westfield College, London 10/10/00.

Asymptotic geometry, tight polyhedra, and the mixing problem, UEA, Norwich 11/12/00.

Adelic amoebas and geometry, University of Münster, Germany 11/1/01 (Colloquium).

Valuations and hyperbolicity in dynamics (2 lectures), GeorgAugustUniversitat Göttingen, PRODYN summer school, 5&6/7/01.

Higherorder mixing and polyhedra, Ohio State University, Columbus OH, 10/8/01.

Higherorder mixing and polyhedra, Univ. of Paris Villetaneuse, PRODYN workshop, 3/9/01.

A mixing rigidity property, Penn StateMaryland Dynamics conference, USA, 12/10/01.

A mixing rigidity property, Williamstown AMS meeting, MA, USA, 13/10/01.

Counting periodic points, Penn State, 17/10/01.

Entropy geometry and disjointness, Warwick University, 1/10/02.

Commuting maps and commutative algebra, Sheffield University colloquium, 2/10/02.

Mixing and Diophantine problems, Univ. of Exeter, 10/10/02.

Mixing and Diophantine problems, Royal Holloway, 15/10/02.

Entropy geometry and disjointness, Manchester University, 30/10/02.

Mahler measure and entropy, Banff Centre, Canada (BIRSPIMS conference 'The many aspects of Mahler Measure'), 27/4/03.

Rigidity in algebraic dynamics, BanffCentre, Canada (BIRSPIMS conference 'Joint Dynamics'), 30/6/03.

Ergodic theory of group automorphisms, University of Warwick (Symbolic Dynamics and Ergodic Theory conference), 15/7/03.

Mixing and Diophantine problems, University of Kent, 23/2/04.

Mixing and Diophantine problems, University of Leicester, 18/3/04.

Mixing and Diophantine problems, Queen Mary University of London, 11/5/04.

Orbit counting without hyperbolicity, Max Planck Institute, Bonn, 1/7/04.

What is abelian rigidity? University of Surrey, 1/10/04.

An example in abelian rigidity, UEA, 11/10/04.

Heights and highly effective Zsigmondy theorems, Royal Holloway (SECANTS 26), 5/3/05.

Topological rigidity on connected groups, University of Princeton, 15/3/05.

Topological rigidity on connected groups, Penn. State, 16/3/05.

Disjointness and entropy geometry, Univ. of Maryland College Park (Spring dynamics), 20/3/05.

Orbit growth for a padic extension: an exact result, Wesleyan University (Workshop on padic dynamics), 14/3/05.

Topological rigidity on connected groups, University of Warwick, 24/5/05.

Dynamical PNT and Mertens, University of East Anglia, 6/6/05.

Heights and highly effective Zsigmondy theorems, Delft University (Leiden InterCity Number Theory Seminar), 21/10/05.

Why Mahler measures arise in dynamics, Univ. South Alabama, Mobile, 9/1/06.

Orbitcounting in nonhyperbolic arithmetic dynamical systems, UKJapan Winter School (Bury St. Edmonds), 12/1/06.

Periodic points detect subdynamics in rank one, University of Warwick, 5/4/06.

Growth in entropy rank one, QMUL (one day ergodic theory meeting), 1/11/06.

Entropy in algebraic dynamics, University of Loughborough, 11/11/06.

Dynamical properties of commuting group automorphisms (series of 7 lectures), TU Graz (Summer School on Dynamical Systems and Number Theory), 913/7/07.

Elliptic curves and reduction, UEA (Arithmetic Seminar), 8/11/07.

Orbitcounting for automorphisms of finite combinatorial rank, University of Cambridge (Discrete Analysis Seminar), 22/1/08.

Slowly growing orbits, Ohio State University, 31/1/08.

Orbitcounting for automorphisms of finite combinatorial rank, University of Leicester, 28/2/08.

Orbitcounting for automorphisms of finite combinatorial rank, University of Bristol (Heilbronn seminar), 5/3/08.

Rigidity and entropy geometry, Uppsala University (DNA seminar), 8/5/08.

Rigidity and entropy geometry, University of Bielefeld, 16/5/08.

Directional dynamics (Symmetries and Invariants of Dynamical Systems), University of Bielefeld, 26/9/08.

Orbitgrowth and related numbertheory problems, Number Theory Seminar, Oxford University, 7/5/09.

Orbit growth and arithmetic, zeta functions and Dirichlet series, Max Planck Institute, Bonn, 19/5/09.

Mixing for commuting automorphisms, The Open University, Milton Keynes, 5/6/09.

Orbit counting for group actions, Max Planck Institute, Bonn, 16/6/09.

An overview of commuting maps, University of Leicester (Workshop on Aperiodic Order), 8/9/09.

Conversations between ergodic theory and number theory, Queen Mary University of London (Oneday workshop), 30/10/09.

Uniform uniform distribution of periodic points, University of Bielefeld (Workshop
on Dynamical Systems and Symbolic Dynamics), 19/5/10. 
Uniform uniform distribution of periodic points, University of Bristol (Oneday conference), 27/5/10.

Uniformities for commuting maps, University of Warwick (ETDS 30th Anniversary Conference), 8/9/10.

Uniformities for commuting maps, University of Cambridge (Discrete Analysis Seminar), 26/10/10.

Counting closed orbits on groups, University of Liverpool (Colloquium), 5/11/10.

Counting fixed points of group automorphisms, University of Utrecht (InterCity Number Theory Seminar), 25/2/11.

Dynamical invariants for group automorphisms, University of Utrecht (Colloquium), 10/3/11.

Group automorphisms from a dynamical point of view, BMC morning talk, University of Leicester, 20/4/11.

Group automorphisms from a dynamical point of view, University of Amsterdam (Colloquium), 11/5/11.

The work of Einsiedler, Katok and Lindenstrauss on the Littlewood problem, University of Utrecht (InterCity Number Theory Seminar), 13/5/11.

Group automorphisms as dynamical systems, University of Bielefeld (Colloquium), 8/12/11.

Group automorphisms as dynamical systems, University of Exeter (Colloquium), 15/12/11.

Dynamics and number theory, University of Bristol (LMS Prospects meeting), 16/12/11.

Group automorphisms as dynamical systems, University of Bristol (Heilbronn Seminar), 7/3/12.

Group automorphisms as dynamical systems, Mimar Sinan University, Istanbul, 2/4/12.

Group automorphisms as dynamical systems, Durham University (Colloquium), 26/11/12.

Group automorphisms as dynamical systems, The Maharaja Sayajirao University of Baroda, India, 28/12/12.

Orbitcounting problems, TU Delft (workshop), 2/4/13.

Ergodic theory and number theory, Univ. of Witwatersrand, Johannesburg (colloquium), 5/8/13.

Natural boundaries in dynamics, Kavli Royal Society Centre, Chicheley Hall (Royal Society International Scientific Seminar), 26/11/13.

Group automorphisms as dynamical systems, University of St Andrews, 30/1/14.

An overview of group automorphisms as dynamical systems, University of Liverpool, 19/3/14.

A PólyaCarlson dichotomy in dynamics, Nicholas Copernicus University, Torun, 13/5/14.

Rigid and flexible properties of group automorphisms, Newton Institute, Cambridge, 12/6/14.

Rigid and flexible properties of group automorphisms, University of Manchester, 10/7/14.

Natural boundaries in dynamics, University of Bielefeld (colloquium), 16/10/14.

Natural boundaries in dynamics, University of East Anglia, 20/10/14.

Rigid and flexible properties of group automorphisms, UNSW, Sydney, 6/2/15.

Homogeneous dynamics, Jagiellonian University, Krakow, Poland, 30/3/15.

Mixing then and now, Universitetet i Agder, Norway, 12/6/15.

Dynamics on onesolenoids, Universitatea BabesBolyai, Romania, 18/9/15.

Two classes of dynamically defined integer sequences, C.I.R.M., MarseilleLuminy, 29/3/16.

The space of group automorphisms, University of Sheffield Colloquium, 16/11/16.

The space of group automorphisms, University of Leeds Colloquium, 12/10/17.

Solenoids, seafood, sets of primes, and Schmidt, Lorentz Centre Leiden, 24/8/2018.

Integer sequences and dynamics, keynote at 2nd IMA Conference on Theoretical and Computational Discrete Mathematics, University of Derby, 15/9/18.

Timechanges preserving zeta functions, University of Exeter, 8/4/19.

Timechanges preserving zeta functions, AGH University of Science and Technology, Krakow, 16/9/19.

Periodic points in dynamics (minicourse over 7 seminars; main speaker at 'Wandering seminar in dynamics'), Gdansk, 27/2/201/3/20.

Timechanges preserving zeta functions, University of Warwick, 2/2/21.

Dirichlet series for slow growth dynamics, Leeds Applied Nonlinear Dynamics group seminar, Leeds, 16/2/21.

Timechanges preserving zeta functions, Newcastle University Algebra seminar, 10/5/21.

Order of mixing in algebraic systems, 'Dynamics of (semi)group actions', Łódź, Poland, 24/6/21.