{"id":132,"date":"2020-09-25T20:03:54","date_gmt":"2020-09-25T20:03:54","guid":{"rendered":"http:\/\/silicio.math.unifi.it\/wordpress\/FIPISI\/?page_id=132"},"modified":"2020-10-20T14:37:28","modified_gmt":"2020-10-20T14:37:28","slug":"programma-terzo-incontro","status":"publish","type":"page","link":"https:\/\/silicio.math.unifi.it\/wordpress\/FIPISI\/programma-terzo-incontro\/","title":{"rendered":"Programma (terzo incontro)"},"content":{"rendered":"

Incontri di Analisi Matematica
\ntra Firenze, Pisa e Siena<\/h1>\n

MathAnalysis(at)UniFIPISI, III<\/h2>\n

venerd\u00ec 30 ottobre 2020
\nUniversit\u00e0 di Siena
\nStreaming<\/h3>\n

Invitiamo gli interessati a compilare il modulo di registrazione<\/a>. Gli utenti registrati riceveranno le informazioni per accedere alla piattaforma informatica per seguire i seminari da remoto.<\/p>\n

PROGRAMMA<\/h3>\n

14:30 apertura
\n14:40\u00a0<\/em>Alessandra Pluda<\/strong> (Universit\u00e0 di Pisa):\u00a0<\/em>Elastic energy for networks<\/em>
\n15:40\u00a0<\/em>Matteo Focardi<\/strong> (Universit\u00e0 di Firenze): On the regularity of singular sets\u00a0 of minimizers for the Mumford-Shah energy
\n<\/em>16:40 pausa
\n<\/em>16:50\u00a0<\/span>Riccardo Scala<\/strong> (Universit\u00e0 di Siena): <\/span>Some recent developments in the problem of relaxation of the area functional<\/em><\/p>\n

ABSTRACTS<\/h3>\n

Alessandra Pluda<\/strong>:\u00a0Elastic energy for networks<\/em><\/p>\n

In the last decades the study of the Willmore functional for surfaces
\nand curves raised the attention of an increasing number of mathematicians.
\nThe reason is twofold: the analysis of the minimization of the Willmore functional presents interesting features and issues from a purely mathematical point of view and on the other hand the energy naturally arises in Mechanics and\u00a0Materials Science\u00a0(for instance in the study of biological membranes).\u00a0In the case of curves, the Willmore functional reduces to the total squared curvature and it is commonly known as elastic energy.
\nIn this talk I will give an overview of results related to the minimization of the elastic energy in the class of networks (finite union of curves whose end points meet in junctions).
\nI will also consider the L^2-gradient flow of the elastic energy of networks which leads to a fourth order evolution law with non-trivial nonlinear boundary conditions. I will give a wellposedness result and I will investigate the long time behaviour of solutions.<\/p>\n

Matteo Focardi<\/strong>: On the regularity of singular sets of minimizers for the Mumford-Shah energy<\/em><\/p>\n

We will survey on the regularity theory of minimizers of the Mumford-Shah functional, focusing in particular on that of the corresponding singular sets. Starting with nowadays classical results, we will finally discuss more recent developments.<\/p>\n

Riccardo Scala<\/strong>: Some recent developments in the problem of relaxation of the area functional<\/em><\/p>\n

We introduce the area functional for smooth maps u<\/em>, namely the functional measuring the area of the graph of u<\/em>. We discuss how to extend it to L1<\/sup> and analyze the related questions of determining the domain and the expression of the extended functional. For graphs of codimension greater than 1 the problem is open, and we restrict our discussion to some examples where many variants of the Plateau problems pop out. We discuss some recent partial results and list some important open problems, which strongly show how the question is related to existence and regularity of solutions to Plateau problems in codimension >1.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Incontri di Analisi Matematica tra Firenze, Pisa e Siena MathAnalysis(at)UniFIPISI, III venerd\u00ec 30 ottobre 2020 Universit\u00e0 di Siena Streaming Invitiamo gli interessati a compilare il modulo di registrazione. Gli utenti registrati riceveranno le informazioni per accedere alla piattaforma informatica per seguire i seminari da remoto. PROGRAMMA 14:30 apertura 14:40\u00a0Alessandra Pluda (Universit\u00e0 di Pisa):\u00a0Elastic energy for … <\/p>\n

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