Institut de recherche mathématique avancée
L'institut
À la une !
Agenda
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Du 19 au 23 mai 2025 conférence
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Géométrie d’Arakelov et mathématiques condensées
- Lieu : IRMA
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Mardi 27 mai 2025 - 10h45 Séminaire Calcul stochastique
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Julie Tourniaire :
A branching particle system as a model of FKPP fronts
- Lieu : Salle de séminaires IRMA
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Résumé : The FKPP equation is a common model in population dynamics, describing how a population spreads and grows over time and space, resulting in wave-like patterns. Recent studies by Birzu, Hallatschek and Korolev on the noisy FKPP equation with Allee effects (or cooperation) suggest the existence of three classes of fluctuating wavefronts: pulled, semipushed and fully pushed fronts. In this talk, I will introduce an analytically tractable model for fluctuating fronts, describing the internal mechanisms that drive the invasion of a habitat by a cooperating population. I will then use this model to explain how such mechanisms shape the genealogy of the population.
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Mardi 27 mai 2025 - 14h00 Séminaire ART
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Dmitry Rumynin :
Symmetric spaces, where Topology meets Representation Theory
- Lieu : Salle de séminaires IRMA
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Résumé : Résumé : We will use Representation Theory to calculate systematically and efficiently the topological invariants of compact Lie groups and homogeneous spaces. Most of the talk is covered by our second paper on ArXiv with John Jones and Adam Thomas, who are both at Warwick. The paper is a part of the ongoing project to study the topological invariants of the four exceptional Rosenfeld projective planes.
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Mercredi 28 mai 2025 - 14h00 Séminaire Arithmétique et géométrie algébrique
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Pol Van Hoften :
p-adic Fourier theory in families
- Lieu : Salle de séminaires IRMA
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Résumé : Classical Fourier theory describes measures on a locally compact abelian group in terms of functions on its Pontryagin dual. In this talk, I will explain an analogous theory for (families of) p-divisible rigid analytic groups and their duals that recovers the Amice transform when applied to the open unit disk considered as multiplicative group. This is joint work with Andrew Graham and Sean Howe.
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Mercredi 28 mai 2025 - 16h30 Séminaire Doctorants
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Virgile Bertrand :
À venir
- Lieu : A confirmer
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Lundi 2 juin 2025 - 15h30 Séminaire Géométrie et applications
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Vincent Humilière :
À venir
- Lieu : Salle de séminaires IRMA