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<h1>cvgmt weekly bulletin</h1>
<p><i>Weekly bulletin for <a href="http://cvgmt.sns.it">http://cvgmt.sns.it</a></i></p>
<h2>Summary</h2>
<p><b>Seminars by:</b> <a href='/seminar/524/'>Carioni</a>, <a href='/seminar/523/'>Mora</a></p>
<p><b>New papers by:</b> <a >Yip</a>, <a href='/person/866/' >Massaccesi</a>, <a href='/person/22/' >De Philippis</a>, <a href='/person/198/' >Brasco</a>, <a href='/person/44/' >Braides</a>, <a >Schimperna</a>, <a href='/person/336/' >Velichkov</a>, <a >Liu</a>, <a href='/person/374/' >Oudet</a>, <a href='/person/183/' >Cicalese</a>, <a href='/person/1400/' >Scala</a>, <a >Walkington</a>, <a href='/person/261/' >Lu</a></p>
<p><b>Modified papers by:</b> <a href='/person/260/'>Goldman</a>, <a href='/person/1287/'>Erhardt</a>, <a >Chambolle</a>, <a >Solci</a>, <a href='/person/12/'>Bardi</a>, <a href='/person/271/'>Rajala</a>, <a >Rossi</a>, <a href='/person/27/'>Cavalletti</a>, <a >Ruf</a>, <a href='/person/157/'>Pallara</a>, <a href='/person/544/'>Cesaroni</a>, <a href='/person/802/'>Sire</a>, <a href='/person/135/'>Catino</a>, <a href='/person/44/'>Braides</a>, <a >Calvo</a>, <a >Valdinoci</a>, <a href='/person/189/'>Orlandi</a>, <a href='/person/183/'>Cicalese</a>, <a >Monticelli</a>, <a href='/person/866/'>Massaccesi</a>, <a >Scotti</a>, <a >Okabe</a>, <a >Jalalzai</a>, <a href='/person/117/'>Paolini</a>, <a href='/person/119/'>Novaga</a>, <a href='/person/120/'>Solombrino</a>, <a >Mastrolia</a>, <a href='/person/1917/'>Castorina</a>, <a href='/person/255/'>Caselles</a></p>
<h2>Events next week</h2>
<ul>
<li><p>
<b><a href='/event/358/'>Geometric aspects of PDE's and functional inequalities</a></b><br />
Thu 28 April 2016 - Sat 30 April 2016<br />
Cortona (AR) - ITALY, Palazzone<br /></p></li>
</ul>
<h2>Seminars next week</h2>
<h3>Thu 28 April 2016</h3><ul>
<li><p>
Marcello Carioni: <b><a href='/seminar/524/'>Calibrations for the Mumford-Shah functional</a></b><br />
sala riunioni, dipartimento di matematica di Pisa, 15:00<br /> </p>
<div style="font-size: smaller;"><p>The Mumford-Shah functional is one of the most studied variational approach to image processing and edge detection, proposed by Mumford and Shah in the late 80's. In the first part of the talk we present it, giving basic properties, known results and conjectures about that. Then, we focus on a suitable calibration technique for this functional, introduced by Alberti, Bouchitté and Dal Maso in 1999 and we show how it can be used to prove that some candidate functions are minimizers.
Lastly we will deal with the opposite question: we ask if, given a minimizer, there always exists a calibration for it. We will state some partial results in this direction and some open problems.</p>
</div> </li>
<li><p>
Maria Giovanna Mora (Dip. Mat. Univ. Pavia): <b><a href='/seminar/523/'>Relaxation of the Hencky Model in Perfect Plasticity</a></b><br />
Sala Riunioni Dipartimento di Matematica di Pisa, 16:00<br /> </p>
<div style="font-size: smaller;"><p>The Hencky model is a static model of small-strain elasto-plasticity. It also emerges as the incremental minimum problem to be solved at each time step, when approaching the quasi-static evolution problem by time discretization. In this talk we will address a basic and very natural question, that has been surprisingly ignored by the mathematical community working on plasticity: what is the relation between the classical formulation of the Hencky model and the weak formulation that is typically used in the literature? Under suitable assumptions on the domain and the Dirichlet boundary, we will show that the weak formulation is in fact the natural extension of the classical Hencky model and can be deduced through a relaxation process.</p>
</div> </li>
</ul>
<h2>New Papers</h2>
<p><b> Brasco, De Philippis:</b> <a href='/paper/2994/'>Spectral inequalities in quantitative form</a></p>
<p><b> Massaccesi, Oudet, Velichkov:</b> <a href='/paper/2995/'>Numerical Calibration of Steiner trees</a></p>
<p><b> Scala, Schimperna:</b> <a href='/paper/2996/'>On the viscous Cahn-Hilliard equation with singular potential and inertial term</a></p>
<p><b> Liu, Lu, Walkington:</b> <a href='/paper/2997/'>Analysis of a dislocation model for earthquakes </a></p>
<p><b> Braides, Cicalese, Yip:</b> <a href='/paper/2998/'>Crystalline Motion of Interfaces Between Patterns</a></p>
<h2>Modified Papers</h2>
<p><b> Novaga, Paolini:</b> <a href='/paper/130/'>Stability of Crystalline Evolutions</a></p>
<p><b> Chambolle, Goldman, Novaga:</b> <a href='/paper/1536/'>Representation, relaxation and convexity for variational problems in Wiener spaces</a></p>
<p><b> Caselles, Jalalzai, Novaga:</b> <a href='/paper/1829/'>On the jump set of solutions of the Total Variation flow</a></p>
<p><b> Chambolle, Goldman, Novaga:</b> <a href='/paper/1834/'>Plane-like minimizers and differentiability of the stable norm</a></p>
<p><b> Erhardt:</b> <a href='/paper/2350/'>Existence of solutions to parabolic problems with nonstandard growth and irregular obstacles</a></p>
<p><b> Erhardt:</b> <a href='/paper/2351/'>Higher integrability for solutions to parabolic problems with irregular obstacles and nonstandard growth</a></p>
<p><b> Bardi, Cesaroni, Scotti:</b> <a href='/paper/2442/'>Convergence in Multiscale Financial Models with Non-Gaussian Stochastic Volatility</a></p>
<p><b> Novaga, Pallara, Sire:</b> <a href='/paper/2555/'>A symmetry result for degenerate elliptic equations on the Wiener space with nonlinear boundary conditions and applications</a></p>
<p><b> Cavalletti, Rajala:</b> <a href='/paper/2640/'>Tangent lines and Lipschitz differentiability spaces</a></p>
<p><b> Massaccesi, Valdinoci:</b> <a href='/paper/2642/'>Is a nonlocal diffusion strategy convenient for biological populations in competition?</a></p>
<p><b> Cicalese, Ruf, Solombrino:</b> <a href='/paper/2651/'>Chirality transitions in frustrated $S^{2}$-valued spin systems</a></p>
<p><b> Calvo, Novaga, Orlandi:</b> <a href='/paper/2686/'>Parabolic equations in time dependent domains</a></p>
<p><b> Braides, Solci:</b> <a href='/paper/2713/'>Motion of discrete interfaces through mushy layers</a></p>
<p><b> Novaga, Okabe:</b> <a href='/paper/2785/'>The two obstacle problem for the parabolic biharmonic equation</a></p>
<p><b> Castorina, Cesaroni, Rossi:</b> <a href='/paper/2819/'>On a parabolic Hamilton-Jacobi-Bellman equation degenerating at the boundary</a></p>
<p><b> Catino, Mastrolia, Monticelli:</b> <a href='/paper/2921/'>Gradient Ricci solitons with vanishing conditions on Weyl</a></p>
<p><b> Cesaroni, Novaga:</b> <a href='/paper/2950/'>Volume constrained minimizers of the fractional perimeter with a potential energy</a></p>
<h2>Open Positions</h2>
<p><a href="/position/177/">Visiting Assistant Professorships at the University of Cincinnati</a> (deadline: Thu 30 June 2016)</p>
<p><a href="/position/178/">PhD studentship on Numerical methods for higher-order nonlinear partial differential equations</a> (deadline: Thu 1 September 2016)</p>
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