A Kinetic equation for granular media
Non-trapping sets and Huygens principle
A kinetic equation for granular media
In this short note we correct a conceptual error in the heuristic derivation of a kinetic equation used for the description of a one-dimensional granular medium in the so called quasi-elastic limit, presented by the same authors in reference[1]. The equation we derived is however correct so that, the rigorous analysis on this equation, which constituted the main purpose of that paper, remains unchanged.
Non-Trapping sets and Huygens Principle
We consider the evolution of a set according to the Huygens principle: the domain at time , Λ, is the set of the points whose distance from is lower than . We give some general results for this evolution, with particular care given to the behavior of the perimeter of the evoluted set as a function of time. We define a class of sets (non-trapping sets) for which the perimeter is a continuous function of , and we give an algorithm to approximate the evolution. Finally we restrict our attention...
L'attribuzione dei testi gramsciani: metodi e modelli matematici
In questo lavoro illustriamo un metodo matematico per affrontare iproblemi di attribuzione di autore, sviluppato in vista della nuova "Edizione Nazionale degli scritti di Antonio Gramsci". Il metodo è basato su alcune importanti idee della matematica moderna, che offrono interessanti prospettive nell'analisi dei testi.
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