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math.AP2016

On the variation of longitudinal and torsional frequencies in a partially hinged rectangular plate

Elvise Berchio, Davide Buoso, Filippo Gazzola

We consider a partially hinged rectangular plate and its normal modes. There are two families of modes, longitudinal and torsional. We study the variation of the corresponding eige…

math.AP2016★ 22 cited

Critical Points for Elliptic Equations with Prescribed Boundary Conditions

Giovanni S. Alberti, Guillaume Bal, Michele Di Cristo

This paper concerns the existence of critical points for solutions to second order elliptic equations of the form posed on a bounded domain with pr…

math.AP2016★ 2 cited

On Coron's problem for weakly coupled elliptic systems

Angela Pistoia, Nicola Soave

We consider the following critical weakly coupled elliptic system \[ \begin{cases} -Δu_i = μ_i |u_i|^{2^*-2}u_i + \sum_{j \neq i} β_{ij} |u_j|^{\frac{2^*}{2}} |u_i|^{\frac{2^*-4}{2…

math.AP2016★ 8 cited

Propagation and recovery of singularities in the inverse conductivity problem

Allan Greenleaf, Matti Lassas, Matteo Santacesaria +2

The ill-posedness of Calderón's inverse conductivity problem, responsible for the poor spatial resolution of Electrical Impedance Tomography (EIT), has been an impetus for the deve…

math.AP2016★ 2 cited

The porous medium equation with large initial data on negatively curved Riemannian manifolds

Gabriele Grillo, Matteo Muratori, Fabio Punzo

We show existence and uniqueness of very weak solutions of the Cauchy problem for the porous medium equation on Cartan-Hadamard manifolds satisfying suitable lower bounds on Ricci…

math.AP2016

Nonexistence of stable solutions to quasilinear elliptic equations on Riemannian manifolds

Dario D. Monticelli, Fabio Punzo, Berardino Sciunzi

We prove nonexistence of nontrivial, possibly sign changing, stable solutions to a class of quasilinear elliptic equations with a potential on Riemannian manifolds, under suitable…

math.AP2016

Steady states of elastically-coupled extensible double-beam systems

Filippo Dell'Oro, Claudio Giorgi, Vittorino Pata

Given and , we analyze an abstract version of the nonlinear stationary model in dimensionless form $$\begin{cases} u"" - \Big(β+ \varrho\int_0^1 |u'(s…

math.AP2016★ 13 cited

Existence of torsional solitons in a beam model of suspension bridge

Vieri Benci, Donato Fortunato, Filippo Gazzola

This paper studies the existence of solitons, namely stable solitary waves, in a suspension bridge. The bridge is modeled as a degenerate plate, that is, a central beam with cross…

math.AP2016

Best dispersal strategies in spatially heterogeneous environments: optimization of the principal eigenvalue for indefinite fractional Neumann problems

Benedetta Pellacci, Gianmaria Verzini

We study the positive principal eigenvalue of a weighted problem associated with the Neumann spectral fractional Laplacian. This analysis is related to the investigation of the sur…

math.AP2016

A quantitative Riemann-Lebesgue lemma with application to equations with memory

Filippo Dell'Oro, Enrico Laeng, Vittorino Pata

An elementary proof of a quantitative version of the Riemann-Lebesgue lemma for functions supported on the half line is given. Applications to differential models with memory are d…

math.AP2016★ 14 cited

A reconstruction algorithm based on topological gradient for an inverse problem related to a semilinear elliptic boundary value problem

Elena Beretta, Andrea Manzoni, Luca Ratti

In this paper we develop a reconstruction algorithm for the solution of an inverse boundary value problem dealing with a semilinear elliptic partial differential equation of intere…

math.AP2016★ 3 cited

Weighted fast diffusion equations (Part II): Sharp asymptotic rates of convergence in relative error by entropy methods

Matteo Bonforte, Jean Dolbeault, Matteo Muratori +1

This paper is the second part of the study. In Part~I, self-similar solutions of a weighted fast diffusion equation (WFD) were related to optimal functions in a family of subcritic…

math.AP2016★ 3 cited

Size estimates of an obstacle in a stationary Stokes fluid

E. Beretta, C. Cavaterra, J. H. Ortega +1

In this work we are interested in estimating the size of a cavity D immersed in a bounded domain Ω, contained in R^d, d=2,3, filled with a viscous fluid governed by the Stokes syst…