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Alessandro Della Corte (Università di Camerino, Italy)

Seminar is over: watch it on our YouTube channel (link below)

Speaker: Alessandro Della Corte  (Università di Camerino, Italy) Title: The simplest erasing substitution Abstract: The symbolic action of a substitution on the binary expansion generates naturally an interval map. In case of erasing substitutions, the map is typically Baire-1 and not Darboux. As a model case, we consider what is arguably the simplest erasing substitution, mapping 0s … Continue reading Alessandro Della Corte (Università di Camerino, Italy)

Álvaro del Pino Gómez (Utrecht University, The Netherlands)

Seminar is over: watch it on our YouTube channel (link below)

Speaker: Álvaro del Pino Gómez  (Utrecht University, The Netherlands) Title: Billiards in subriemannian geometry Abstract: When one considers manifolds with boundary, billiard dynamics are the natural analogue of standard geodesic dynamics. Namely, instead of having geodesics escape at the boundary, we force them back into the manifold using the reflection law. In other dynamical settings, … Continue reading Álvaro del Pino Gómez (Utrecht University, The Netherlands)

Eva Miranda (Universitat Politècnica de Catalunya) and Daniel Peralta-Salas (Instituto de Ciencias Matemáticas, Spain)

Seminar is over: watch it on our YouTube channel (link below)

Speakers: Eva Miranda (Universitat Politècnica de Catalunya), Daniel Peralta-Salas (Instituto de Ciencias Matemáticas, Spain) Title: Looking at Euler flows through a contact mirror: Universality and Turing completeness Abstract: The dynamics of an inviscid and incompressible fluid flow on a Riemannian manifold is governed by the Euler equations. Recently, Tao launched a programme to address the global … Continue reading Eva Miranda (Universitat Politècnica de Catalunya) and Daniel Peralta-Salas (Instituto de Ciencias Matemáticas, Spain)

Tanja Schindler (Scuola Normale Superiore, Italy)

Seminar is over: watch it on our YouTube channel (link below)

Speaker: Tanja Schindler  (Scuola Normale Superiore, Italy) Title: Almost sure asymptotic behaviour of Birkhoff sums for infinite measure-preserving dynamical systems Abstract: We are interested in the limit behaviour of Birkhoff sums over an infinite sigma-finite measure space. If the observable is integrable then -- by a classical theorem by Aaronson -- there exists no sequence … Continue reading Tanja Schindler (Scuola Normale Superiore, Italy)

Selim Ghazouani (Université d’Orsay, France)

Seminar is over: watch it on our YouTube channel (link below)

Speaker: Selim Ghazouani  (Université d’Orsay, France) Title: Piecewise affine homeomorphisms of the circle and dilation surfaces Abstract: In this talk I will consider the following question: if one picks a piecewise affine map of the circle "at random”, what dynamical behaviour are we likely to observe? The case of standard circle diffeomorphisms has been studied by … Continue reading Selim Ghazouani (Université d’Orsay, France)

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