Some links to my past...

• Otterswang
• Musikkapelle Otterswang
• Studienkolleg St. Johann

• Universität Tübingen
• University of Washington, Seattle
• Low Temperature Lab, University of Washington
• Universität Greifswald
• Institut für Mathematik und Informatik, Universität Greifswald
• Universität Bielefeld
• Fakultät für Mathematik, Universität Bielefeld
• The Open University
• Department of Mathematics, The Open University
• University of Bath
• Department of Mathematical Sciences, University of Bath

• Combinatorial Aspects of Mathematical Analysis, Edinburgh
• 8^th International Conference on Quasicrystals, Bangalore
• Joint Colloquium GDR-CINQ and SPQK, Nancy
• The Italian Summer 2003 School, Santo Stefano del Sole
• Mathematics and Physics of Disordered Systems, Oberwolfach
• Aperiodic Order: Dynamical Systems, Combinatorics and Operators, Banff
• Jahrestagung der DMV 2004, Heidelberg
• Arithmetic Geometry and Public Key Cryptography, Oberwolfach
• MASCOS Workshop on Algebraic Dynamics, Sydney
• Recent Trends of Combinatorics in the Mathematical Context, Barcelona
• Fractal 2006, Wien
• Generalized substitutions, tilings and numeration, Marseille
• AMS Spring Southeastern Section Meeting, Davidson, NC
• SET for BRITAIN Annual Reception at the House of Commons, London
• Generalized substitutions, tilings and numeration, Ile de Porquerolles
• 2007 British Combinatorial Conference, Reading
• Ordre apériodique: noveaux liens et aciens problèmes revisités, Luminy
• Aspects of Aperiodic Order, Bielefeld
• 10^th International Conference on Quasicrystals, Zürich
• Anderson Localization Transition: Introductory Training Course, Cambridge
• Combinatorial and Computational Aspects of Tilings, London
• The Pisot Conjecture - From Substitution Dynamical Systems to Rauzy Fractals and Meyer Sets, Oberwolfach
• Numération: Mathématiques et Informatique, Luminy
• Math-Info 2010 - Towards new interactions between mathematics and computer science, Luminy
• Numeration, Leiden
• Institute of Mathematics & its Applications (IMA) 3rd Conference on Mathematics in Sports, Manchester
• Geometry and Dynamics of Laminations & Dynamics - Arithmetics - Combinatorics, Ile de Porquerolles
• Almost periodic order: spectral, dynamical, and stochastic approaches, Banff
• Joint Mathematics Meeting, Boston, MA
• AMS Spring Southeastern Section Meeting, Tampa, FL
• AMS Spring Eastern Section Meeting, Washington, DC
• Macroscopic and large scale phenomena: coarse graining, mean field limits and ergodicity, Twente
• Mathematics of Distances and Applications, Varna
• Four Faces of Number Theory, Würzburg
• Elementary and Analytic Number Theory, Schloß Schney
• Joint Mathematics Meeting, San Diego, CA
• Summer school 2013: Algebraic Statistics, Nordfjordeid
• floripadynsys : Workshop on Dynamics, Numeration and Tilings, Florianopolis, SC
• Joint Mathematics Meeting, Baltimore, MD
• Informal Workshop on Tiling Dynamical Systems, Bielefeld
• Diophantine Analysis, Würzburg
• Elementary and Analytic Number Theory, Hildesheim
• Joint Mathematics Meeting, San Antonio, TX
• EquaDiff 2015, Lyon
• GeoGebra Global Gathering 2015, Linz
• French-German Summer School Galois Theory and Number Theory, Konstanz
• Joint Mathematics Meeting, Seattle, WA
• Numeration 2016, Prague
• 2016 PhD Summer School in Discrete Mathematics, Rogla
• 7^th European Congress of Mathematics, Berlin
• Joint Mathematics Meeting, Atlanta, GA
• Representation Theory and Applications to Differential Equations, Kingston
• Foundations of Computational Mathematics, Barcelona
• Joint Mathematics Meeting, San Diego, CA
• UNCG Summer School in Computational Number Theory 2018: Algorithms for Extensions of Large Degree, Greensboro, NC
• International Congress of Mathematicians 2018, Rio de Janeiro
• Joint Mathematics Meeting, Baltimore, MD
• Aperiodic Order meets Number Theory, Melbourne
• Formal Power Series and Algebraic Combinatorics (FPSAC) 2019, Ljubljana
• Sage Days 105: Free and Practical Software for Algebraic Combinatorics 2019, Ljubljana
• Joint Mathematics Meeting, Denver, CO
• Inflation Tilings versus Model Sets, Holetown