Ben Moonen, Universita'di Nijmegen On the Tate and Mumford-Tate conjectures for varieties with h^{2,0}=1 Mercoledì 06 Aprile 2016, ore 17:00 Sala di rappresentanza, Dipartimento di Matematica, Università degli Studi, Via C. Saldini 50 |
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Enzo Mitidieri, Università degli Studi di Trieste Liouville Theorems in PDE’s: old and new Martedì 15 Marzo 2016, ore 16:30 Sala Consiglio, 7 piano, Dipartimento di Matematica, Via Bonardi 9, Milano |
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Camillo De Lellis, Universitaet Zuerich Regularity and singularity of area-minimizing surfaces Venerdì 26 Febbraio 2016, ore 11:00 Sala Consiglio, 7 piano, Dipartimento di Matematica, Via Bonardi 9, Milano |
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Sir Michael Berry, H H Wills Physics Laboratory, Bristol, UK Divergent series: from Thomas Bayes’s bewilderment to today’s resurgence via the rainbow Mercoledì 24 Febbraio 2016, ore 17:00 Sala Consiglio, 7 piano, Dipartimento di Matematica, Via Bonardi 9, Milano |
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Abstract
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Following the discovery by Bayes in 1747 that Stirling’s series for the factorial is divergent, the study of asymptotic series has today reached the stage of enabling summation of the divergent tails of many series with an accuracy far beyond that of the smallest term. Several of these advances sprang from developments of Airy’s theory of waves near optical caustics such as the rainbow. Key understandings by Euler, Stokes, Dingle and Écalle unify the different series corresponding to different parameter domains, culminating in the concept of resurgence: quantifying the way in which the low orders of such series reappear in the high orders.
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