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Fenomeni di concentrazione per energie di tipo Ginzburg-Landau

Ilaria Fragalà (2005)

Bollettino dell'Unione Matematica Italiana

Si discute il comportamento asintotico di energie di tipo Ginzburg-Landau, per funzioni da R n + k in R k , e sotto l'ipotesi che l'esponente di crescita p sia strettamente maggiore di k . In particolare, si illustra un risultato di compattezza e di Γ -convergenza, rispetto a una opportuna topologia sui Jacobiani, visti come correnti n -dimensionali. L'energia limite è definita sulla classe degli n -bordi interi M , e la sua densità dipende localmente dalla molteplicità di M tramite una famiglia di costanti di...

Fractional Roesser problem and its optimization

Rafał Kamocki (2014)

Banach Center Publications

In the paper, a fractional continuous Roesser model is considered. Existence and uniqueness of a solution and continuous dependence of solutions on controls of the nonlinear model are investigated. Next, a theorem on the existence of an optimal solution for linear model with variable coefficients is proved.

Funzioni ( p , q ) -convesse

Ennio De Giorgi, Antonio Marino, Mario Tosques (1982)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

We study a class of functions which differ essentially from those which are the sum of a convex function and a regular one and which have interesting properties related to Γ -convergence and to problems with non-convex constraints. In particular some results are given for the associated evolution equations.

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