<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T18:02:34Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2072/467852" metadataPrefix="oai_dc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2072/467852</identifier><datestamp>2025-04-03T09:09:25Z</datestamp><setSpec>com_2072_98</setSpec><setSpec>col_2072_378192</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
   <dc:title>Planar Kolmogorov systems with infinitely many singular points at infinity</dc:title>
   <dc:creator>Diz-Pita, Érika</dc:creator>
   <dc:creator>Llibre, Jaume</dc:creator>
   <dc:creator>Otero-Espinar, M. Victoria</dc:creator>
   <dc:subject>Kolmogorov system</dc:subject>
   <dc:subject>Lotka-Volterra system</dc:subject>
   <dc:subject>Phase portrait</dc:subject>
   <dc:subject>Poincaré disc</dc:subject>
   <dc:description>Altres ajuts: Consellería de Educación, Universidade e Formación Profesional (Xunta de Galicia), grant ED431C 2019/10</dc:description>
   <dc:description>We classify the global dynamics of the five-parameter family of planar Kolmogorov systems y˙ = y (b0 + b1yz + b2y + b3z), z˙ = z (c0 + b1yz + b2y + b3z), which is obtained from the Lotka-Volterra systems of dimension three. These systems have infinitely many singular points at infinity. We give the topological classification of their phase portraits in the Poincaré disc, so we can describe the dynamics of these systems near infinity. We prove that these systems have 13 topologically distinct global phase portraits.</dc:description>
   <dc:date>2022</dc:date>
   <dc:type>Article</dc:type>
   <dc:identifier>https://ddd.uab.cat/record/274780</dc:identifier>
   <dc:identifier>urn:10.1142/S0218127422500651</dc:identifier>
   <dc:identifier>urn:oai:ddd.uab.cat:274780</dc:identifier>
   <dc:identifier>urn:scopus_id:85129295161</dc:identifier>
   <dc:identifier>urn:articleid:17936551v32n5p2250065</dc:identifier>
   <dc:identifier>urn:gsduab:5506</dc:identifier>
   <dc:identifier>urn:oai:egreta.uab.cat:publications/f2d42f13-bd4b-464b-9349-1116f5bf75a2</dc:identifier>
   <dc:language>eng</dc:language>
   <dc:relation>Agencia Estatal de Investigación PID2020-115155GB-I00</dc:relation>
   <dc:relation>Ministerio de Educación, Cultura y Deporte FPU17/02125</dc:relation>
   <dc:relation>Agencia Estatal de Investigación PID2019-104658GB-I00</dc:relation>
   <dc:relation>Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1617</dc:relation>
   <dc:relation>European Commission 777911</dc:relation>
   <dc:relation>International journal of bifurcation and chaos in applied sciences and engineering ; Vol. 32, Issue 5 (April 2022), art. 2250065</dc:relation>
   <dc:rights>open access</dc:rights>
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   <dc:rights>https://rightsstatements.org/vocab/InC/1.0/</dc:rights>
   <dc:format>application/pdf</dc:format>
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