Notiziario Scientifico
a cura del Dipartimento di Matematica G. Castelnuovo, Sapienza Università di Roma
Settimana dal 06-04-2020 al 12-04-2020
Martedì 07 aprile 2020
Ore 16:00, aula Conversi, in teleconferenza. Per seguire il seminario collegarsi al seguente link: meet.google.com/xvf-zchw-phc, Dipartimento di Fisica Sapienza Università di Roma
Seminari delle meccaniche
Carlo Doglioni (Istituto Nazionale di Geofisica e "Sapienza")
Earth's geodynamics and earthquakes
The combination of the secular cooling of a heterogeneous and stratified mantle, and the astronomical tuning are inferred as the main controlling factors of plate tectonics. The Earth’s rotation and the tidal despinning generate a torque acting on the lithosphere, producing a net westerly directed rotation of the lithosphere with respect to the underlying mantle. During the interseismic stage, a dilatational band forms in the brittle upper crust. The stretching is recovered during the coseismic stage when the fault hangingwall falls releasing its gravitational energy on a normal fault. On the contrary, for a thrust fault, during the interseismic stage an over compressed band forms above the brittle–ductile transition, which is opposingly dilated during the earthquake, delivering elastic energy.
Mercoledì 08 aprile 2020
Ore 14:00, in teleconferenza, per seguire il seminario collegarsi al link: https://meet.google.com/vsz-nxkm-hav, Dipartimento di Matematica, Sapienza Università di Roma
Seminario di Algebra e Geometria
Gustavo Jasso (Bonn)
The symplectic geometry of higher Auslander algebras
It is well known that the partially wrapped Fukaya category of a marked disk is equivalent to the perfect derived category of a Dynkin quiver of type A. In this talk I will present a higher-dimensional generalisation of this equivalence which reveals a deep connection between three a priori unrelated subjects: * Floer theory of symmetric products of marked surfaces * Higher Auslander-Reiten theory in the sense of Iyama * Waldhausen K-theory of differential graded categories. If time permits, as a first application of the above relationship, I will outline a symplecto-geometric proof of a recent result of Beckert concerning the derived equivalence between higher Auslander algebras of different dimensions. This is a report on joint work with Tobias Dyckerhoff and Yankı Lekili.
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