<?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>1409-2433</journal-id>
<journal-title><![CDATA[Revista de Matemática Teoría y Aplicaciones]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mat]]></abbrev-journal-title>
<issn>1409-2433</issn>
<publisher>
<publisher-name><![CDATA[Centro de Investigaciones en Matemática Pura y Aplicada (CIMPA) y Escuela de Matemática, San José, Costa Rica.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-24332017000100061</article-id>
<article-id pub-id-type="doi">10.15517/rmta.v24i1.27751</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estabilidad de sistemas por medio de polinomios Hurwitz]]></article-title>
<article-title xml:lang="en"><![CDATA[Stability systems via Hurwitz polynomials]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Hernández]]></surname>
<given-names><![CDATA[Baltazar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loredo-Villalobos]]></surname>
<given-names><![CDATA[Carlos Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-González]]></surname>
<given-names><![CDATA[Edgar Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Cantón]]></surname>
<given-names><![CDATA[Eric]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[ México, D.F.]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[ México, D.F.]]></addr-line>
<country>MX</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Potosino de Investigación Científica y Tecnológica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>MX</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>24</volume>
<numero>1</numero>
<fpage>61</fpage>
<lpage>77</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-24332017000100061&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-24332017000100061&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-24332017000100061&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[ResumenPara analizar la estabilidad de un sistema de ecuaciones diferenciales lineales x&#729; = Ax podemos estudiar la localización de las raíces del polinomio característico pA (t) asociado a la matriz A. En este artículo presentamos diversos criterios -algebraicos y geométricos- que nos ayudan a determinar el lugar donde se encuentran las raíces sin necesidad de calcularlas en forma directa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[AbstractTo analyze the stability of a linear system of differential equations x&#729; = Ax we can study the location of the roots of the characteristic polynomial pA (t) associated with the matrix A. We present various criteria - algebraic and geometric - that help us to determine where the roots are located without calculating them directly.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[polinomios Hurwitz]]></kwd>
<kwd lng="es"><![CDATA[estabilidad de sistemas]]></kwd>
<kwd lng="es"><![CDATA[criterios de estabilidad]]></kwd>
<kwd lng="en"><![CDATA[Hurwitz polynomials]]></kwd>
<kwd lng="en"><![CDATA[system stability]]></kwd>
<kwd lng="en"><![CDATA[stability criteria]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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