Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Fragnelli Genni"'
Autor:
Fragnelli Genni
Publikováno v:
Advances in Nonlinear Analysis, Vol 9, Iss 1, Pp 1102-1129 (2019)
In this paper we consider a degenerate population equation in divergence form depending on time, on age and on space and we prove a related null controllability result via Carleman estimates.
Externí odkaz:
https://doaj.org/article/06325be2e64c4acaa72ba2aa37e1fd8b
We consider a degenerate/singular wave equation in one dimension, with drift and in presence of a leading operator which is not in divergence form. We impose a homogeneous Dirichlet boundary condition where the degeneracy occurs and a boundary dampin
Externí odkaz:
http://arxiv.org/abs/2403.17802
We study the null controllability for a degenerate/singular wave equation with drift in non divergence form. In particular, considering a control localized on the non degenerate boundary point, we provide some conditions for the boundary controllabil
Externí odkaz:
http://arxiv.org/abs/2402.18247
We consider several classes of degenerate hyperbolic equations involving delay terms and suitable nonlinearities. The idea is to rewrite the problems in an abstract way and, using semigroup theory and energy method, we study well posedness and stabil
Externí odkaz:
http://arxiv.org/abs/2402.01023
Autor:
Fragnelli Genni, Mugnai Dimitri
Publikováno v:
Advances in Nonlinear Analysis, Vol 6, Iss 1, Pp 61-84 (2017)
We establish Carleman estimates for singular/degenerate parabolic Dirichlet problems with degeneracy and singularity occurring in the interior of the spatial domain. Our results are completely new, since this situation is not covered by previous cont
Externí odkaz:
https://doaj.org/article/c2cb8f308e4c4cb29cf056e5151b7112
In this paper we study the stability of two different problems. The first one is a one-dimensional degenerate wave equation with degenerate damping, incorporating a drift term and a leading operator in non-divergence form. In the second problem we co
Externí odkaz:
http://arxiv.org/abs/2308.08645
Autor:
Camasta, Alessandro, Fragnelli, Genni
In this paper we study the controllability and the stability for a degenerate beam equation in divergence form via the energy method. The equation is clamped at the left end and controlled by applying a shearing force or a damping at the right end.
Externí odkaz:
http://arxiv.org/abs/2306.11851