SPASS
Seminari di Probabilità, Analisi Stocastica e Statistica
Seminars in Probability, Stochastic Analysis and Statistics
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SPASS
September 25th 2025 at 09:00 CEST - Aula Seminari, Dip. Matematica, UNIPI
Speaker: Michele Coti Zelati (Imperial College London)
Title: Alpha-unstable flows and the fast dynamo problem
Abstract: The fast dynamo problem concerns the generation and maintenance of magnetic fields by fluid motion through the process of electromagnetic induction. In passive vector advection, this can be formulated as the exponential growth of the magnetic energy, at a resistivity-independent rate. In this talk, I will provide a construction of a Lipschitz, divergence-free and time-independent velocity field that is a fast dynamo on the whole space.
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SPASS nasce nel 2011 per raccogliere i seminari sui temi che ne compongono l'acronimo organizzati a Pisa, al Dipartimento di Matematica e alla Scuola Normale Superiore. A partire dal 2022 la piattaforma si estende al gruppo di ricerca in Probabilità delle Università di Firenze e Siena.
SPASS dates back to 2011, when it was created as a joint seminar group in Pisa on the subjects composing the acronym, at the Department of Mathematics and Scuola Normale Superiore. In 2022 the research groups in Probability Theory of Universities of Florence and Siena joined the group.
Gianmarco Bet è ricercatore al Dipartimento di Matematica dell'Università di Firenze; Alessandra Caraceni è ricercatrice presso la Scuola Normale Superiore; Francesco Grotto è ricercatore al Dipartimento di Matematica dell'Università di Pisa; Giovanni Zanco è ricercatore al Dipartimento di Matematica dell'Università di Siena.
Gianmarco Bet is a researcher at the Department of Mathematics at University of Florence; Alessandra Caraceni is a researcher at Scuola Normale Superiore; Francesco Grotto is a researcher at the Department of Mathematics of University of Pisa; Giovanni Zanco is a researcher at the Department of Mathematics at University of Siena.
The SPASS Research Group
Marco Romito (Uni Pisa)
Franco Flandoli (Scuola Normale Superiore)
Luca Avena (Uni Firenze)
Dario Trevisan (Uni Pisa)
Mario Maurelli (Uni Pisa)
Andrea Agazzi (former SPASS organizer, University of Bern)
Alessandra Caraceni (Scuola Normale Superiore)
Giovanni Zanco (Uni Siena)
Gianmarco Bet (Uni Firenze)
Francesco Grotto (Uni Pisa)
Katerina Papagiannouli (Uni Pisa)
Maurizio Pratelli (Uni Pisa)
Gian Marco del Sarto (SNS)
Marta Lenzi (SNS)
Eliseo Luongo (SNS)
Silvia Morlacchi (SNS)
Leonardo Roveri (Uni Pisa)
Federico Butori (SNS)
Francesco Triggiano (SNS)
Eloy Mosig (UniPi)
Samuele Saviozzi (UniPi)
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