<?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>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2007001000029</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Donaldson-Witten invariants for flows on four manifolds]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos-Silva]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Investigación y de Estudios Avanzados del IPN Departamento de Física ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2007</year>
</pub-date>
<volume>53</volume>
<fpage>150</fpage>
<lpage>154</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2007001000029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2007001000029&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2007001000029&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[After a survey of the cohomological quantum field theory, we review the computation of their Donaldson-Witten invariants. These invariants are generalized for smooth flows defined on the four manifold using notion of asymptotic cycles of higher dimensions than one introduced recently by S. Schwartzman.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Después de repasar la teoría co-homológica de campos, revisamos los cálculos de los invariantes de Donaldson-Witten. Estos invariantes son generalizados para flujos suaves definidos en cuatro variedades usando la noción de ciclos asintóticos para dimensiones mayores que uno introducido recientemente por S. Schwartzman.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Topological field theory]]></kwd>
<kwd lng="en"><![CDATA[supersymmetric Yang-Mills]]></kwd>
<kwd lng="en"><![CDATA[topological invariants]]></kwd>
<kwd lng="en"><![CDATA[dynamical Systems]]></kwd>
<kwd lng="es"><![CDATA[Teoría topológica de campos]]></kwd>
<kwd lng="es"><![CDATA[Yang-Mills supersimétrico]]></kwd>
<kwd lng="es"><![CDATA[invariantes topológicos]]></kwd>
<kwd lng="es"><![CDATA[sistemas dinámicos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Donaldson&#150;Witten invariants for flows on four manifolds</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>R. Santos&#150;Silva</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Departamento de F&iacute;sica, Centro de Investigaci&oacute;n y de Estudios Avanzados del IPN, P.O. Box 14&#150;740, 07000 M&eacute;xico D.F., M&eacute;xico, e&#150;mail: <a href="mailto:rsantos@fis.cinvestav.mx" target="_blank">rsantos@fis.cinvestav.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 1 de mayo de 2006    <br>   Aceptado el 1 de noviembre de 2006</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">After a survey of the cohomological quantum field theory, we review the computation of their Donaldson&#150;Witten invariants. These invariants are generalized for smooth flows defined on the four manifold using notion of asymptotic cycles of higher dimensions than one introduced recently by S. Schwartzman.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Topological field theory; supersymmetric Yang&#150;Mills; topological invariants; dynamical Systems.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Despu&eacute;s de repasar la teor&iacute;a co&#150;homol&oacute;gica de campos, revisamos los c&aacute;lculos de los invariantes de Donaldson&#150;Witten. Estos invariantes son generalizados para flujos suaves definidos en cuatro variedades usando la noci&oacute;n de ciclos asint&oacute;ticos para dimensiones mayores que uno introducido recientemente por S. Schwartzman.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Teor&iacute;a topol&oacute;gica de campos; Yang&#150;Mills supersim&eacute;trico; invariantes topol&oacute;gicos; sistemas din&aacute;micos </font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 11.10.&#150;z; 11.15.&#150;q; 10.30.Pb; 02.40.&#150;k</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v53s4/v53s4a29.pdf">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgments</b></font></p>     <p align="justify"><font face="verdana" size="2">I am indebted with Hugo Garc&iacute;a&#150;Compe&aacute;n for his comments and to CINVESTAV campus Monterrey for the hospitality and support. This review was supported by CONACyT graduate fellowship.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. E. Witten, <i>Commun. Math. 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