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COLLOQUIO DE GIORGI – Dirac and Lagrange structures in energy-based mathematical modeling – Volker Mehrmann (Technische Universität Berlin)

Most real world dynamical systems consist of subsystems from different physical domains, modelled by partial-differential equations, ordinary differential equations, and algebraic equations, combined with input and output connections.…

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Algebraic classes in mixed characteristic and André’s p-adic periods – Giuseppe Ancona (Université de Strasbourg)

(Joint work with D. Fratila) Motivated by the study of algebraic classes in mixed characteristic, we define a countable subalgebra of ${\Bbb Q}_p$ which we call the algebra of “Andre’s p-adic periods”. We will explain the analogy and the difference…

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Applications of AAA Rational Approximation – Lloyd N. Trefethen (Mathematical Institute, University of Oxford)

For the first time, a method has recently become available for fast computation of near-best rational approximations on arbitrary sets in the real line or complex plane: the AAA algorithm (Nakatsukasa-Sete-T. 2018). We will present the algorithm and…

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