<?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>0034-7426</journal-id>
<journal-title><![CDATA[Revista Colombiana de Matemáticas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.colomb.mat.]]></abbrev-journal-title>
<issn>0034-7426</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia y Sociedad Colombiana de Matemáticas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-74262010000200004</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Generalization of Hilbert's Integral Inequality]]></article-title>
<article-title xml:lang="es"><![CDATA[Generalización de la desigualdad integral de Hilbert]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[CASTILLO]]></surname>
<given-names><![CDATA[RENÉ ERLIN]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[TROUSSELOT]]></surname>
<given-names><![CDATA[EDUARD]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad de Oriente  ]]></institution>
<addr-line><![CDATA[Cumaná ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>15</day>
<month>12</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>15</day>
<month>12</month>
<year>2010</year>
</pub-date>
<volume>44</volume>
<numero>2</numero>
<fpage>113</fpage>
<lpage>118</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74262010000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74262010000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74262010000200004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[In this paper we make some further generalization of well known Hilbert's inequality and its equivalent form in two dimensional case. Many other results of this type in recent years follows as a special case of our results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este artículo se hace una generalización de la conocida desigualdad de Hilbert y su forma equivalente en el caso de dos dimensiones. Otros resultados de este tipo de años recientes, se siguen como un caso especial de los resultados aquí presentados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hardy-Hilbert's inequality]]></kwd>
<kwd lng="en"><![CDATA[Best constant]]></kwd>
<kwd lng="en"><![CDATA[Hölder's inequality]]></kwd>
<kwd lng="en"><![CDATA[Minkowski's integral inequality]]></kwd>
<kwd lng="es"><![CDATA[Desigualdad de Hardy-Hilbert]]></kwd>
<kwd lng="es"><![CDATA[mejor constante]]></kwd>
<kwd lng="es"><![CDATA[desigualdad de Hölder]]></kwd>
<kwd lng="es"><![CDATA[desigualdad integral de Minkowski]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ 
<font size="2" face="verdana">

    <p>
<b>
<font size="4">
    <center>
Generalization of Hilbert's Integral Inequality
</center>
</font>
</b>
</p>

    <p>
<b>
<font size="3">
    <center>
Generalizaci&oacute;n de la desigualdad integral de Hilbert
</center>
</font>
</b>
</p>

    <p>
    <center>
REN&Eacute; ERLIN CASTILLO<sup>1</sup>, 
EDUARD TROUSSELOT<sup>2</sup>
</center>
</p>

    <p>
<sup>1</sup>Universidad Nacional de Colombia, Bogot&aacute;, Colombia. Email: <a href="mailto:recastillo@unal.edu.co">recastillo@unal.edu.co</a>
    <br>

<sup>2</sup>Universidad de Oriente, Cuman&aacute;, Venezuela. Email: <a href="mailto:eddycharles2007@hotmail.com">eddycharles2007@hotmail.com</a>
    <br>
</p>

<hr size="1">

    ]]></body>
<body><![CDATA[<p>
<b>
    <center>
Abstract
</center>
</b>
</p>

    <p>
In this paper we make some further generalization of well known Hilbert's inequality and its equivalent form in two dimensional case. Many other results of this type in recent years follows as a special case of our results.
</p>

    <p>
<b>
Key words:
</b>
Hardy-Hilbert's inequality,
Best constant,
H&ouml;lder's inequality,
Minkowski's integral inequality.
</p>

<hr size="1">

<i>2000 Mathematics Subject Classification: 26D15.</i>

<hr size="1">

    <p>
<b>
    <center>
Resumen
</center>
</b>
</p>

    <p>
En este art&iacute;culo se hace una generalizaci&oacute;n de la conocida desigualdad de Hilbert y su forma equivalente en el caso de dos dimensiones. Otros resultados de este tipo de a&ntilde;os recientes, se siguen como un caso especial de los resultados aqu&iacute; presentados.
</p>

    <p>
<b>
Palabras clave:
</b>
Desigualdad de Hardy-Hilbert,
mejor constante,
desigualdad de H&ouml;lder,
desigualdad integral de Minkowski.
</p>

<hr size="1">

    <p>
Texto completo disponible en <a href="pdf/rcm/v44n2/v44n2a04.pdf">PDF</a>
</p>

<hr size="1">

    <p>
<b>
<font size="3">
References
</font>
</b>
</p>


    ]]></body>
<body><![CDATA[<!-- ref --><p>
[1] Y. C. Chow, `On Inequalities of Hilbert and Widder´, <i>J. London Math. Sco.</i> <i>14</i>,  (1939), 151-154.    &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=S0034-7426201000020000400001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[2] G. B. Folland, <i>Real Analysis. Modern Techniques</i>, John Wiley and Sons, New York, United States, 1984.    &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=S0034-7426201000020000400002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[3] G. Hardy, `Note on a Theorem of Hilbert´, <i>MathZ</i> <i>6</i>,  (1920), 314-317.    &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=S0034-7426201000020000400003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[4] G. Hardy, J. E. Littlewood, and G. Polya, <i>Inequalities</i>, Cambridge University Press, Cambridge, United Kingdom, 1934.    &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=S0034-7426201000020000400004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[5] B. He, Y. Li, and Y. Qian, `On Analogues of the Hilbert's Inequality´, <i>Communications in Mathematical Analysis</i> <i>4</i>, 2 (2008), 47-53.    &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=S0034-7426201000020000400005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    ]]></body>
<body><![CDATA[<!-- ref --><p>
[6] J. Knang, `On new Extensions of Hilbert's Integral Inequality´, <i>Math. anal. appl</i> <i>235</i>,  (1999), 608-614.    &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=S0034-7426201000020000400006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[7] Y. Li, J. Wu, and B. He, `A new Hilbert-Type Integral Inequality and the Equivalent Form´, <i>International Journal of Mathematics and Mathematical Sciences</i> <i>vol. 2006</i>,  (2006), 1-6. Article ID 45378
&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=S0034-7426201000020000400007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p>
[8] B. G. Pachatte, `Inequalities Similar to the Integral Analogue of Hilbert's Inequality´, <i>Tamkang J. Math</i> <i>30</i>,  (1999), 139-146.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000036&pid=S0034-7426201000020000400008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

    <!-- ref --><p>
[9] B. Yang, `On the Norm of an Integral Operator and Applications´, <i>J. Math. Anal. Appl</i> <i>321</i>,  (2006), 182-192.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000038&pid=S0034-7426201000020000400009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref -->
</p>

<hr size="1">

    <center>
<b>(Recibido en marzo de 2010. Aceptado en junio de 2010)</b>
</center>
<hr size="1">

    <p>
Este art&iacute;culo se puede citar en <i>LaTeX</i> utilizando la siguiente referencia bibliogr&aacute;fica de <i>BibTeX</i>:
</p>
<code><font size="2" face="verdana">
@ARTICLE{RCMv44n2a04,    <br>
 &nbsp;&nbsp;&nbsp; AUTHOR &nbsp;= {Erlin Castillo, Ren&eacute; and Trousselot, Eduard},    ]]></body>
<body><![CDATA[<br>
 &nbsp;&nbsp;&nbsp; TITLE &nbsp; = {{Generalization of Hilbert's Integral Inequality}},    <br>
 &nbsp;&nbsp;&nbsp; JOURNAL = {Revista Colombiana de Matem&aacute;ticas},    <br>
&nbsp;&nbsp;&nbsp; YEAR &nbsp;&nbsp; = {2010},    <br>
&nbsp;&nbsp;&nbsp; volume &nbsp;= {44},    <br>
&nbsp;&nbsp;&nbsp; number &nbsp;= {2},    <br>
&nbsp;&nbsp;&nbsp; pages &nbsp; = {113-118}    <br>
}
</font></code>

<hr size="1">
</font>
     ]]></body><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chow]]></surname>
<given-names><![CDATA[Y. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`On Inequalities of Hilbert and Widder´]]></article-title>
<source><![CDATA[J. London Math. Sco.]]></source>
<year>1939</year>
<volume>14</volume>
<page-range>151-154</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Folland]]></surname>
<given-names><![CDATA[G. B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Real Analysis. Modern Techniques]]></source>
<year>1984</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[John Wiley and Sons]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hardy]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`Note on a Theorem of Hilbert´]]></article-title>
<source><![CDATA[MathZ]]></source>
<year>1920</year>
<volume>6</volume>
<page-range>314-317</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hardy]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Littlewood]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Polya]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Inequalities]]></source>
<year>1934</year>
<publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Qian]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`On Analogues of the Hilbert's Inequality´]]></article-title>
<source><![CDATA[Communications in Mathematical Analysis]]></source>
<year>2008</year>
<volume>4</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>47-53</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knang]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`On new Extensions of Hilbert's Integral Inequality´]]></article-title>
<source><![CDATA[Math. anal. appl]]></source>
<year>1999</year>
<volume>235</volume>
<page-range>608-614</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`A new Hilbert-Type Integral Inequality and the Equivalent Form´]]></article-title>
<source><![CDATA[International Journal of Mathematics and Mathematical Sciences]]></source>
<year>2006</year>
<volume>vol. 2006</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pachatte]]></surname>
<given-names><![CDATA[B. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`Inequalities Similar to the Integral Analogue of Hilbert's Inequality´]]></article-title>
<source><![CDATA[Tamkang J. Math]]></source>
<year>1999</year>
<volume>30</volume>
<page-range>139-146</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang="en"><![CDATA[`On the Norm of an Integral Operator and Applications´]]></article-title>
<source><![CDATA[J. Math. Anal. Appl]]></source>
<year>2006</year>
<volume>321</volume>
<page-range>182-192</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
