<?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>S0034-74262011000200005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Funciones localmente inyectivas entre continuos]]></article-title>
<article-title xml:lang="en"><![CDATA[Locally One to One Maps between Continua]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[CAMARGO]]></surname>
<given-names><![CDATA[JAVIER]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>15</day>
<month>12</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>15</day>
<month>12</month>
<year>2011</year>
</pub-date>
<volume>45</volume>
<numero>2</numero>
<fpage>167</fpage>
<lpage>177</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74262011000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74262011000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74262011000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Una función f continua y sobreyectiva definida entre continuos se dice localmente inyectiva si para cualquier punto x del dominio, existe un abierto U, con x en U, tal que la restricción f|U es inyectiva. En este escrito, estudiaremos propiedades de las funciones localmente inyectivas definidas de un continuo sobre él mismo. Además, mostraremos condiciones necesarias y suficientes para que un continuo X satisfaga la siguiente afirmación: Si \hboxf:X&rarr; X es localmente inyectiva, entonces f es un homeomorfismo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[A map f between topological spaces is called locally one to one provided that for every point x there exists an open set U such that x&isin; U and f|U is one to one. We study properties of this kind of maps, when they are defined from a continuum onto itself. Also, we show necesary and sufficient conditions that a continuum X must satisfy to prove the following: If \hboxf:X&rarr; X is locally one to one, then f is a homeomorphism.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Funciones entre continuos]]></kwd>
<kwd lng="es"><![CDATA[funciones localmente inyectivas]]></kwd>
<kwd lng="es"><![CDATA[dendroides]]></kwd>
<kwd lng="es"><![CDATA[continuos]]></kwd>
<kwd lng="es"><![CDATA[homeomorfismos locales]]></kwd>
<kwd lng="en"><![CDATA[Maps between continua]]></kwd>
<kwd lng="en"><![CDATA[Locally one to one maps]]></kwd>
<kwd lng="en"><![CDATA[Dendroids]]></kwd>
<kwd lng="en"><![CDATA[Continua]]></kwd>
<kwd lng="en"><![CDATA[Local homeomorphisms]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <font size="2" face="verdana">      <p> <b> <font size="4">     <center> Funciones localmente inyectivas entre continuos </center> </font> </b> </p>      <p> <b> <font size="3">     <center> Locally One to One Maps between Continua </center> </font> </b> </p>      <p>     <center> JAVIER CAMARGO<sup>1</sup> </center> </p>      <p> <sup>1</sup>Universidad Industrial de Santander, Bucaramanga, Colombia. Email: <a href="mailto:jcam@matematicas.uis.edu.co">jcam@matematicas.uis.edu.co</a>     <br> </p>  <hr size="1">      <p> <b>     ]]></body>
<body><![CDATA[<center> Resumen </center> </b> </p>      <p> Una funci&oacute;n <i>f</i> continua y sobreyectiva definida entre continuos se dice localmente inyectiva si para cualquier punto <i>x</i> del dominio, existe un abierto <i>U</i>, con <i>x</i> en <i>U</i>, tal que la restricci&oacute;n <i>f|<sub>U</sub></i> es inyectiva. En este escrito, estudiaremos propiedades de las funciones localmente inyectivas definidas de un continuo sobre &eacute;l mismo. Adem&aacute;s, mostraremos condiciones necesarias y suficientes para que un continuo <i>X</i> satisfaga la siguiente afirmaci&oacute;n: Si <i>f:X&rarr; X</i> es localmente inyectiva, entonces <i>f</i> es un homeomorfismo. </p>      <p> <b> Palabras clave: </b> Funciones entre continuos, funciones localmente inyectivas, dendroides, continuos, homeomorfismos locales. </p>  <hr size="1">  <i>2000 Mathematics Subject Classification: 54E40, 54F15.</i>  <hr size="1">      <p> <b>     <center> Abstract </center> </b> </p>      <p> A map <i>f</i> between topological spaces is called locally one to one provided that for every point <i>x</i> there exists an open set <i>U</i> such that <i>x&isin; U</i> and <i>f|<sub>U</sub></i> is one to one. We study properties of this kind of maps, when they are defined from a continuum onto itself. Also, we show necesary and sufficient conditions that a continuum <i>X</i> must satisfy to prove the following: If <i>f:X&rarr; X</i> is locally one to one, then <i>f</i> is a homeomorphism. </p>      <p> <b> Key words: </b> Maps between continua, Locally one to one maps, Dendroids, Continua, Local homeomorphisms. </p>  <hr size="1">      <p> Texto completo disponible en <a href="pdf/rcm/v45n2/v45n2a05.pdf">PDF</a> </p>  <hr size="1">      <p> <b> <font size="3"> Referencias </font> </b> </p>       <!-- ref --><p> &#91;1&#93; J. J. Charatonik and P. Pellicer-Covarrubias, 'On Covering Mappings on Solenoids', <i>Proc. Amer. Math. Soc.</i> <i>130</i>,  (2001), 2145-2154.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000022&pid=S0034-7426201100020000500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>      <!-- ref --><p> &#91;2&#93; A. Illanes and J. S. B. Nadler, <i>Hyperspaces. Fundamentals and Recent Advances</i>, Vol. 216, Pure and Applied Mathematics, New York, United States,    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000024&pid=S0034-7426201100020000500002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> 1999. </p>      <!-- ref --><p> &#91;3&#93; T. Mackowiak, 'Continuous Mappings on Continua', <i>Dissertationes Math., Rozprawy Mat.</i> <i>158</i>,  (1979),    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000026&pid=S0034-7426201100020000500003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> 1-95. </p>      <!-- ref --><p> &#91;4&#93; S. Mac&iacute;as, <i>Topics on Continua</i>, Vol. 275 of <i>Pure and Applied Mathematics Series</i>, Chapman & Hall/CRC, Taylor & Francis Group, London, United Kingdom,    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000028&pid=S0034-7426201100020000500004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> 2005. </p>      <!-- ref --><p> &#91;5&#93; S. S. R. Isaacs, 'Semigrupos de funciones localmente inyectivas sobre <i>S<sup>1</sup></i>', <i>Lecturas Mat.</i>,  (1994), 15-20.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000030&pid=S0034-7426201100020000500005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>      <!-- ref --><p> &#91;6&#93; J. S. Nadler, <i>Continuum Theory, an Introduction</i>, Vol. 158, Pure and Applied Mathematics, New York, United States,    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000032&pid=S0034-7426201100020000500006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> 1992. </p>      <!-- ref --><p> &#91;7&#93; G. T. Whyburn, <i>Analytic Topology</i>, Vol. 28, Amer. Math. Soc. Colloq. Publ., Providence, United States,    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000034&pid=S0034-7426201100020000500007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> 1942. </p>  <hr size="1">      <center> <b>(Recibido en febrero de 2011. Aceptado en julio de 2011)</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{RCMv45n2a05,    <br>  &nbsp;&nbsp;&nbsp; AUTHOR &nbsp;= {Camargo, Javier},    <br>  &nbsp;&nbsp;&nbsp; TITLE &nbsp; = {{Funciones localmente inyectivas entre continuos}},    <br>  &nbsp;&nbsp;&nbsp; JOURNAL = {Revista Colombiana de Matem&aacute;ticas},    <br> &nbsp;&nbsp;&nbsp; YEAR &nbsp;&nbsp; = {2011},    <br> &nbsp;&nbsp;&nbsp; volume &nbsp;= {45},    ]]></body>
<body><![CDATA[<br> &nbsp;&nbsp;&nbsp; number &nbsp;= {2},    <br> &nbsp;&nbsp;&nbsp; pages &nbsp; = {167--177}    <br> } </font></code>  <hr size="1"> </font>      ]]></body><back>
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