<?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>0121-7488</journal-id>
<journal-title><![CDATA[Ciencia en Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Ciencia en Desarrollo]]></abbrev-journal-title>
<issn>0121-7488</issn>
<publisher>
<publisher-name><![CDATA[Universidad Pedagógica y Tecnológica de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-74882017000100029</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Global weak solutions for a 2 x 2 balance non-symmetric system of Keyfitz-Kranzer type]]></article-title>
<article-title xml:lang="es"><![CDATA[Soluciones débiles globales para un sistema 2 x 2 balanceado no simétrico de tipo Keyfitz-Kranzer]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De la Cruz Guerrero]]></surname>
<given-names><![CDATA[Richard Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juajibioy Otero]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rendón Arbeláez]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia Escuela de Matemáticas y Estadística ]]></institution>
<addr-line><![CDATA[Tunja ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia Escuela de Matemáticas y Estadística ]]></institution>
<addr-line><![CDATA[Tunja ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Matemáticas ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>1</numero>
<fpage>29</fpage>
<lpage>33</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-74882017000100029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-74882017000100029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-74882017000100029&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this paper we consider the Cauchy problem for a particular non-symmetric Keyfitz-Kranzer type system, by using the vanishing viscosity method coupled with the compensated compactness method we get global bounded entropy weak solutions. The main difficulty is to get uniformly bounded estimates on the viscosity method and in this paper is studied.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este artículo se considera el problema de Cauchy para un sistema no simétrico de tipo Keyfitz-Kranzer y utilizando argumentos de viscosidad nula junto con el método de compacidad compensada se obtiene soluciones débiles entrópicas globales. La principal dificultad es obtener estimaciones uniformemente acotadas en el método de viscosidad y en este trabajo se estudia.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hyperbolic system]]></kwd>
<kwd lng="en"><![CDATA[global weak solutions]]></kwd>
<kwd lng="en"><![CDATA[non-symmetric system]]></kwd>
<kwd lng="en"><![CDATA[Keyfitz-Kranzer type]]></kwd>
<kwd lng="es"><![CDATA[Sistema hiperbólico]]></kwd>
<kwd lng="es"><![CDATA[soluciones débiles globales]]></kwd>
<kwd lng="es"><![CDATA[sistema no simétrico]]></kwd>
<kwd lng="es"><![CDATA[tipo Keyfitz-Kranzer]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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