<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-419X</journal-id>
<journal-title><![CDATA[Revista Integración]]></journal-title>
<abbrev-journal-title><![CDATA[Integración - UIS]]></abbrev-journal-title>
<issn>0120-419X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Industrial de Santander]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-419X2014000200001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Métricas rotacionalmente invariantes y el problema de Steklov]]></article-title>
<article-title xml:lang="en"><![CDATA[Rotationally invariant metrics and the Steklov problem]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MONTAÑO CARREÑO]]></surname>
<given-names><![CDATA[ÓSCAR ANDRÉS]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad del Valle Departamento de Matemáticas ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>117</fpage>
<lpage>128</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-419X2014000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-419X2014000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-419X2014000200001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Bajo condiciones en el signo de la curvatura de Ricci, encontramos cotas para el primer valor propio de Steklov en una bola n-dimensional dotada con una métrica rotacionalmente invariante]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Under conditions on the sign of the Ricci curvature, we find bounds for the first Steklov eigenvalue, in a n-dimensional ball endowed with a rotationally invariant metric]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Valor propio de Steklov]]></kwd>
<kwd lng="es"><![CDATA[métrica rotacionalmente invariante]]></kwd>
<kwd lng="es"><![CDATA[curvatura de Ricci]]></kwd>
<kwd lng="en"><![CDATA[Steklov eigenvalue]]></kwd>
<kwd lng="en"><![CDATA[rotationally invariant metric]]></kwd>
<kwd lng="en"><![CDATA[Ricci curvature]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[   <font size="2" face="Verdana">     <p align="center"><font size="4"><i><b>M&eacute;tricas rotacionalmente invariantes y el    <br> problema de Steklov</b></i></font></p>      <p align="center">&Oacute;SCAR ANDR&Eacute;S MONTA&Ntilde;O CARRE&Ntilde;O<sup>*</sup>    <br>  Universidad del Valle, Departamento de Matem&aacute;ticas, Cali, Colombia.    <br> </p>  <hr>     <p align="justify"><b><i>Resumen</i></b> Bajo condiciones en el signo de la curvatura de Ricci, encontramos cotas para el primer valor propio de Steklov en una bola <i>n</i>-dimensional dotada con una m&eacute;trica rotacionalmente invariante.</p>      <p align="justify"><b><i>Palabras claves:</i></b> Valor propio de Steklov, m&eacute;trica rotacionalmente invariante, curvatura de Ricci.    <br> <b><i>MSC2010:</i></b> 35P15, 53C20, 53C42, 53C43.</p> <hr>     <p align="center"><font size="3"><i><b>Rotationally invariant metrics and the Steklov problem</b></i></font></p>      ]]></body>
<body><![CDATA[<p align="justify"><b><i>Abstract</i></b> Under conditions on the sign of the Ricci curvature, we find bounds for the first Steklov eigenvalue, in a <i>n</i>-dimensional ball endowed with a rotationally invariant metric.</p>      <p align="justify"><b><i>Keywords:</i></b> Steklov eigenvalue, rotationally invariant metric, Ricci curvature.</p> <hr>     <p align="justify">Texto Completo disponible en <a href ="pdf\rein\v32n2\v32n2a01.pdf" target="_blank">PDF</a></p> <hr>     <p align="left"><font size="3"><b><i>Referencias</i></b></font></p>      <!-- ref --><p align="justify">&#91;1&#93; Bramble J.H. and Payne L.E., &quot;Bounds in the Neumann problem for second order uniformly elliptic operators&quot;, <i>Pacific J. Math.</i> 12 (1962), 823-833.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000017&pid=S0120-419X201400020000100001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;2&#93; Escobar J.F., &quot;Topics in PDE&#39;s and Differential Geometry&quot;, in <i>XII Escola de Geometria Diferencial</i>, Goiania (Ed. da UFG), (2002), 88 p.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000019&pid=S0120-419X201400020000100002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;3&#93; Escobar J.F., &quot;The geometry of the first non-zero Stekloff eigenvalue&quot;, <i>J. Funct. Anal.</i> 150 (1997), no. 2, 544-556.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000021&pid=S0120-419X201400020000100003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      ]]></body>
<body><![CDATA[<!-- ref --><p align="justify">&#91;4&#93; Escobar J.F., &quot;An isoperimetric inequality and the first Steklov eigenvalue&quot;, <i>J. Funct. Anal.</i> 165 (1999), no. 1, 101-116.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000023&pid=S0120-419X201400020000100004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;5&#93; Escobar J.F., &quot;A comparison theorem for the first non-zero Steklov eigenvalue&quot;, <i>J. Funct. Anal.</i> 178 (2000), no. 1, 143-155.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000025&pid=S0120-419X201400020000100005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;6&#93; Escobar J.F., &quot;The Yamabe problem on manifolds with boundary&quot;, <i>J. Differential Geom.</i> 35 (1992), no. 1, 21-84.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000027&pid=S0120-419X201400020000100006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;7&#93; Escobar J.F., &quot;Conformal deformation of a Riemannian metric to a scalar flat metric with constant mean curvature on the boundary&quot;, <i>Ann. of Math.</i> (2) 136 (1992), no. 1, 1-50.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000029&pid=S0120-419X201400020000100007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;8&#93; Ilias S. and Makhoul O., &quot;A Reilly inequality for the first Steklov eigenvalue&quot;, <i>Differential Geom. Appl.</i> 29 (2011), no. 5, 699-708.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000031&pid=S0120-419X201400020000100008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      ]]></body>
<body><![CDATA[<!-- ref --><p align="justify">&#91;9&#93; Kuttler J.R. and Sigillito V.G., &quot;Lower bounds for Stekloff and free membrane eigenvalues&quot;, <i>SIAM Review</i> 10 (1968), 368-370.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000033&pid=S0120-419X201400020000100009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;10&#93; Monta&ntilde;o O.A., &quot;The Stekloff problem for rotationally invariant metrics on the ball&quot;, <i>Rev. Colombiana Mat.</i> 47 (2013), no. 2, 181-190.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000035&pid=S0120-419X201400020000100010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;11&#93; Monta&ntilde;o O.A., &quot;Cota superior para el primer valor propio del problema de Steklov&quot;, <i>Rev. Integr. Temas Mat.</i> 31 (2013), no. 1, 53-58.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000037&pid=S0120-419X201400020000100011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;12&#93; Payne L.E., &quot;Some isoperimetric inequalities for harmonic functions&quot;, <i>SIAM J. Math. Anal.</i> 1 (1970), 354359.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000039&pid=S0120-419X201400020000100012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;13&#93; Steklov V.A., &quot;Sur les problemes fondamentaux de la physique mathematique&quot;, <i>Ann. Sci. &Eacute;cole Norm</i> 19 (1902), 445490.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000041&pid=S0120-419X201400020000100013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      ]]></body>
<body><![CDATA[<!-- ref --><p align="justify">&#91;14&#93; Weinstock R., &quot;Inequalities for a classical eigenvalue problem&quot;, <i>J. Rational Mech. Anal.</i> 3 (1954), 745753.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000043&pid=S0120-419X201400020000100014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;15&#93; Wang Q. and Xia C., &quot;Sharp bounds for the first nonzero Steklov eigenvalues&quot;, <i>J. Funct. Anal</i> 257 (2009), no. 9, 26352644.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000045&pid=S0120-419X201400020000100015&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;16&#93; Xia C. and Wang Q., &quot;Inequalities for the Steklov eigenvalues&quot;, <i>Chaos Solitons Fractals</i>	 48 (2013), 6167.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000047&pid=S0120-419X201400020000100016&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>      <!-- ref --><p align="justify">&#91;17&#93; Xia C., &quot;Rigidity of compact manifolds with boundary and nonnegative Ricci curvature&quot;, <i>Proc. Amer. Math. Soc.</i> 125 (1997), no. 6, 18011806.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000049&pid=S0120-419X201400020000100017&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>   <hr>     <p align="left"><sup>*</sup>Email: <a href="mailto:oscar.montano@correounivalle.edu.co">oscar.montano@correounivalle.edu.co</a>    <br> Recibido: 26 de febrero de 2014, Aceptado: 02 de mayo de 2014.    ]]></body>
<body><![CDATA[<br> Para citar este art&iacute;culo: O.A. Monta&ntilde;o Carre&ntilde;o, M&eacute;tricas rotacionalmente invariantes y el problema de    <br> Sketlov, <i>Rev. Integr. Temas Mat.</i> 32 (2014), no. 2, 117-128.</p> </font>      ]]></body><back>
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