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19952026
Showing 2017 · math.APShow all

15 papers · 2 filters

math.AP2017

Porous medium equations on manifolds with critical negative curvature: unbounded initial data

Matteo Muratori, Fabio Punzo

We investigate existence and uniqueness of solutions of the Cauchy problem for the porous medium equation on a class of Cartan-Hadamard manifolds. We suppose that the radial Ricci…

math.AP2017

The porous medium equation on Riemannian manifolds with negative curvature: the superquadratic case

Gabriele Grillo, Matteo Muratori, Juan Luis Vázquez

We study the long-time behaviour of nonnegative solutions of the Porous Medium Equation posed on Cartan-Hadamard manifolds having very large negative curvature, more precisely when…

math.AP2017

The role of structural viscoelasticity in deformable porous media with incompressible constituents: applications in biomechanics

Maurizio Verri, Giovanna Guidoboni, Lorena Bociu +1

The main goal of this work is to clarify and quantify, by means of mathematical analysis, the role of structural viscoelasticity in the biomechanical response of deformable porous…

math.AP2017★ 5 cited

A phase-field approach for the interface reconstruction in a nonlinear elliptic problem arising from cardiac electrophysiology

Elena Beretta, Luca Ratti, Marco Verani

In this work we tackle the reconstruction of discontinuous coefficients in a semilinear elliptic equation from the knowledge of the solution on the boundary of the domain, an inver…

math.AP2017★ 2 cited

Further remarks on the Luo-Hou's ansatz for a self-similar solution to the 3D Euler equations

Gianmarco Sperone

It is shown that the self-similar ansatz proposed by T. Hou and G. Luo to describe a singular solution of the 3D axisymmetric Euler equations leads, without assuming any asymptotic…

math.AP2017★ 39 cited

Reconstruction of a piecewise constant conductivity on a polygonal partition via shape optimization in EIT

Elena Beretta, Stefano Micheletti, Simona Perotto +1

In this paper, we develop a shape optimization-based algorithm for the electrical impedance tomography (EIT) problem of determining a piecewise constant conductivity on a polygonal…

math.AP2017★ 13 cited

Spiraling asymptotic profiles of competition-diffusion systems

Susanna Terracini, Gianmaria Verzini, Alessandro Zilio

This paper describes the structure of the nodal set of segregation profiles arising in the singular limit of planar, stationary, reaction-diffusion systems with strongly competitiv…

math.AP2017★ 8 cited

On an elastic model arising from volcanology: an analysis of the direct and inverse problem

Andrea Aspri, Elena Beretta, Edi Rosset

In this paper we investigate a mathematical model arising from volcanology describing surface deformation effects generated by a magma chamber embedded into Earth's interior and ex…

math.AP2017★ 13 cited

Loss of energy concentration in nonlinear evolution beam equations

Maurizio Garrione, Filippo Gazzola

Motivated by the oscillations that were seen at the Tacoma Narrows Bridge, we introduce the notion of solutions with a prevailing mode for the nonlinear evolution beam equation $$…

math.AP2017★ 8 cited

Rigidity results for variational infinity ground states

Graziano Crasta, Ilaria Fragalà

We prove two rigidity results for a variational infinity ground state of an open bounded convex domain . They state that coincides with a multiple of…

math.AP2017★ 42 cited

Navier-Stokes-Voigt equations with memory in 3D lacking instantaneous kinematic viscosity

Francesco Di Plinio, Andrea Giorgini, Vittorino Pata +1

We consider a Navier-Stokes-Voigt fluid model where the instantaneous kinematic viscosity has been completely replaced by a memory term incorporating hereditary effects, in presenc…

math.AP2017

On the inverse problem of detecting cardiac ischemias: theoretical analysis and numerical reconstruction

Elena Beretta, Cecilia Cavaterra, Maria Cristina Cerutti +2

In this paper we develop theoretical analysis and numerical reconstruction techniques for the solution of an inverse boundary value problem dealing with the nonlinear, time-depende…

math.AP2017

A measure of the torsional performances of partially hinged rectangular plates

Elvise Berchio, Davide Buoso, Filippo Gazzola

We introduce a new functional, named gap function, which measures the torsional instability of a partially hinged rectangular plate, aiming to model the deck of a bridge. Then we t…

math.AP2017★ 12 cited

Variational problems with long-range interaction

Nicola Soave, Hugo Tavares, Susanna Terracini +1

We consider a class of variational problems for densities that repel each other at distance. Typical examples are given by the Dirichlet functional and the Rayleigh functional \[ D…

math.AP2017★ 1 cited

Regularity of higher order in two-phase free boundary problems

Daniela De Silva, Fausto Ferrari, Sandro Salsa

We develop further the strategy implemented in our series of papers on inhomogeneous two-phase fee boundary problems, to show that flat or Lipschitz free boundaries of such problem…