<?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>S0120-419X2018000200101</article-id>
<article-id pub-id-type="doi">10.18273/revint.v36n2-2018003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reseña de la búsqueda de hacer agujeros]]></article-title>
<article-title xml:lang="en"><![CDATA[Review of the search for holes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Anaya]]></surname>
<given-names><![CDATA[José G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maya]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuentes-Montes de Oca]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[Toluca ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>101</fpage>
<lpage>116</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-419X2018000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-419X2018000200101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-419X2018000200101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Un espacio topológico conexo Z es unicoherente si para cualesquiera A y B cerrados y conexos de Z, tales que Z = A &#8746; B, se tiene que A &#8745; B es conexa. Sea Z un espacio unicoherente: decimos que z &#8712; Z agujera a Z si Z - {z} no es unicoherente. Un problema de reciente estudio es: dado un espacio topológico unicoherente H(Z), obtenido de un espacio topológico Z, ¿cuáles elementos A &#8712; H(Z) lo agujerean? Este trabajo consiste en dar una reseña de los resultados que hasta la fecha se conocen de este problema. MSC2010: 54B15, 54B20, 54F55.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A connected topological space Z is unicoherent provided that if Z = A &#8746; B, where A and B are closed connected subsets of Z, then A &#8745; B is connected. Let Z be a unicoherent space: we say that z &#8712; Z makes a hole in Z if Z - {z} is not unicoherent. A problem of recent study is: given a topological space unicoherent H(Z), obtained from a topological space Z, which elements A &#8712; H(Z) makes a hole? This work consists in giving a review of the results known to date of this problem.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Continuo]]></kwd>
<kwd lng="es"><![CDATA[hiperespacios]]></kwd>
<kwd lng="es"><![CDATA[propiedad b)]]></kwd>
<kwd lng="es"><![CDATA[unicoherencia]]></kwd>
<kwd lng="es"><![CDATA[cono]]></kwd>
<kwd lng="es"><![CDATA[suspensión]]></kwd>
<kwd lng="en"><![CDATA[Continuum]]></kwd>
<kwd lng="en"><![CDATA[hyperspaces]]></kwd>
<kwd lng="en"><![CDATA[property b)]]></kwd>
<kwd lng="en"><![CDATA[unicoherence]]></kwd>
<kwd lng="en"><![CDATA[cone]]></kwd>
<kwd lng="en"><![CDATA[suspension]]></kwd>
</kwd-group>
</article-meta>
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<surname><![CDATA[Jr. S.B]]></surname>
<given-names><![CDATA[Nadler]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hyperspace of sets]]></article-title>
<source><![CDATA[Monographs and Textbooks in Pure and Applied Mathematics]]></source>
<year>1978</year>
<page-range>49</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Marcel Dekker]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B30">
<label>[30]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Whyburn]]></surname>
<given-names><![CDATA[G.T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analytic Topology]]></article-title>
<source><![CDATA[AMS Colloquium Publications]]></source>
<year>1942</year>
<page-range>28</page-range><publisher-loc><![CDATA[Providence, R.I ]]></publisher-loc>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
