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<p style="MARGIN: 0cm 0cm 0pt"><span lang="ES-AR" style="FONT-SIZE: 9.5pt; FONT-FAMILY: Arial"><span name="st">Seminario</span> de Ecuaciones Diferenciales y Análisis Numérico</span></p>
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<p style="MARGIN: 0cm 0cm 0pt"><span lang="ES-AR" style="FONT-SIZE: 9.5pt; FONT-FAMILY: Arial">Proximas Charlas: La próxima semana habrá dos charlas (el Lunes 21 y el Martes 22)</span></p>
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<p style="TEXT-ALIGN: justify"><span style="FONT-FAMILY: Arial">Lunes<span lang="EN-US"> </span>21<span lang="EN-US"> de </span></span><span style="FONT-FAMILY: Arial">Abril</span><span lang="EN-US"><span lang="ES-MX" style="FONT-FAMILY: Arial">, </span><span style="FONT-FAMILY: Arial">1</span></span><span style="FONT-FAMILY: Arial">7</span><span lang="EN-US"><span lang="ES-MX" style="FONT-FAMILY: Arial">hs</span><span style="FONT-FAMILY: Arial">, Aula de Seminarios</span></span><span style="FONT-FAMILY: Arial">, Departamento de Matemática</span><span lang="ES-MX" style="FONT-FAMILY: Arial">: </span></p>
<p style="TEXT-ALIGN: justify"><span lang="ES-MX" style="FONT-FAMILY: Arial"></span><font face="Arial"><strong> Humberto Ramos</strong></font><strong><font face="Arial"> Quoirin</font></strong><span lang="EN-US"><span lang="EN-US" style="FONT-FAMILY: Arial"> (Universit</span></span><span style="FONT-FAMILY: Arial">è</span><span lang="EN-US"><span lang="EN-US" style="FONT-FAMILY: Arial"> </span></span><span style="FONT-FAMILY: Arial">Libre de Bruxelles</span><span lang="EN-US"><span lang="EN-US" style="FONT-FAMILY: Arial">)</span></span></p>
<p style="TEXT-ALIGN: justify"><span lang="EN-US"><span> Título</span><span>: </span></span><span style="FONT-FAMILY: Arial">A weighted eigenvalue problem for an indefinite elliptic operator. </span></p>
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<p><span lang="EN-US"></span><span style="FONT-FAMILY: Arial">Resumen:</span></p>
<p><span style="FONT-FAMILY: Arial">Let $\Delta_p u=div(|\nabla u|^{p-2}\nabla u)$ be the p-Laplacian operator and $\Omega$ be a bounded domain </span><span style="FONT-FAMILY: Arial">in $R^N$. </span></p>
<p style="TEXT-ALIGN: left"><span style="FONT-FAMILY: Arial">Given a potential V and a weight m, the eigenvalue problem, </span>
<p style="TEXT-ALIGN: left"><font face="Arial">(P) $\Delta_pu+V(x) |u|^{p-2} u=\lambda m(x) |u|^{p-2}u,\quad u\in W_0^{1,p}(\Omega)$</font> may not have a principal eigenvale.
<p style="TEXT-ALIGN: left">We find a necessary and sufficient condition on V and m for the existence of principal eigenvalues of (P). </p>
<p style="TEXT-ALIGN: left">Further eigenvalues are also investigated.</p>
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<p><span lang="EN-US" style="FONT-SIZE: 9.5pt; FONT-FAMILY: Arial"></span> </p>
<p>Martes 22 de Abril, 14 hs (aula a confirmar). </p>
<p><strong> Gustavo Perla</strong> (Universidade Federal Do Rio de Janeiro, Brasil).</p>
<p> Título: Mathematical Models in Piezoelectricity; Analysis and Control<br><br><span lang="EN-US" style="FONT-SIZE: 9.5pt; FONT-FAMILY: Arial"></span></p>
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<p><span lang="EN-US" style="FONT-SIZE: 9.5pt; FONT-FAMILY: Arial"> </span><span lang="ES-AR"><font size="2">Estan todos cordialmente invitados.</font></span></p></div>
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<p style="MARGIN: 0cm 0cm 0pt"><span lang="ES-AR"><font size="2">Sandra Martinez</font></span></p></blockquote>
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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><pre><span lang="ES-AR"><font size="2"> </font></span></pre><pre><span lang="ES-AR"><span><font size="2"> </font></span><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mate.dm.uba.ar/~smartin/seminario.htm" target="_blank"><font color="#0000cc" size="2">http://mate.dm.uba.ar/~smartin/<span name="st">seminario</span>.htm</font></a></span></pre>
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