<?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>2026-04-14T06:33:44Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:10256/19707" metadataPrefix="mets">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:10256/19707</identifier><datestamp>2024-06-18T12:18:15Z</datestamp><setSpec>com_2072_452955</setSpec><setSpec>com_2072_2054</setSpec><setSpec>col_2072_453069</setSpec></header><metadata><mets xmlns="http://www.loc.gov/METS/" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" ID="&#xa;&#x9;&#x9;&#x9;&#x9;DSpace_ITEM_10256-19707" TYPE="DSpace ITEM" PROFILE="DSpace METS SIP Profile 1.0" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd" OBJID="&#xa;&#x9;&#x9;&#x9;&#x9;hdl:10256/19707">
   <metsHdr CREATEDATE="2026-04-14T08:33:44Z">
      <agent ROLE="CUSTODIAN" TYPE="ORGANIZATION">
         <name>RECERCAT</name>
      </agent>
   </metsHdr>
   <dmdSec ID="DMD_10256_19707">
      <mdWrap MDTYPE="MODS">
         <xmlData xmlns:mods="http://www.loc.gov/mods/v3" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
            <mods:mods xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
               <mods:name>
                  <mods:role>
                     <mods:roleTerm type="text">author</mods:roleTerm>
                  </mods:role>
                  <mods:namePart>Barrabés Vera, Esther</mods:namePart>
               </mods:name>
               <mods:name>
                  <mods:role>
                     <mods:roleTerm type="text">author</mods:roleTerm>
                  </mods:role>
                  <mods:namePart>Cors Iglesias, Josep Maria</mods:namePart>
               </mods:name>
               <mods:name>
                  <mods:role>
                     <mods:roleTerm type="text">author</mods:roleTerm>
                  </mods:role>
                  <mods:namePart>Fernandes, A.C.</mods:namePart>
               </mods:name>
               <mods:name>
                  <mods:role>
                     <mods:roleTerm type="text">author</mods:roleTerm>
                  </mods:role>
                  <mods:namePart>Vidal, Claudio</mods:namePart>
               </mods:name>
               <mods:extension>
                  <mods:dateAccessioned encoding="iso8601">2024-06-18T12:18:14Z</mods:dateAccessioned>
               </mods:extension>
               <mods:extension>
                  <mods:dateAvailable encoding="iso8601">2024-06-18T12:18:14Z</mods:dateAvailable>
               </mods:extension>
               <mods:originInfo>
                  <mods:dateIssued encoding="iso8601">info:eu-repo/date/embargoEnd/2022-07-102021-07-10</mods:dateIssued>
               </mods:originInfo>
               <mods:identifier type="none"/>
               <mods:identifier type="uri">http://hdl.handle.net/10256/19707</mods:identifier>
               <mods:abstract>We study convexity and symmetry of central configurations in the five body problem when three of the masses ara located at the vertices of an equilateral triangle, that we call Lagrange plus two central configurations. First, we prove that the two bodies out of the vertices of the triangle cannot be placed on certain lines. Next, we give a geometrical characterization of such configurations in the sense as that of Dziobek, and we describe the admissible regions where the two remaining bodies can be placed. Furthermore, we prove that any Lagrange plus two central configuration is concave. Finally, we show numerically the existence of non-symmetric central configurations of the five body problem</mods:abstract>
               <mods:language>
                  <mods:languageTerm authority="rfc3066"/>
               </mods:language>
               <mods:accessCondition type="useAndReproduction">Tots els drets reservats info:eu-repo/semantics/openAccess</mods:accessCondition>
               <mods:subject>
                  <mods:topic>Mecànica celest</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Celestial mechanics</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Lagrange, Espais de</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Lagrange spaces</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Geometria diferencial</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Geometry, Differencial</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Problema dels cossos múltiples</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Many-body problem</mods:topic>
               </mods:subject>
               <mods:titleInfo>
                  <mods:title>Convexity and symmetry of central configurations in the five-body problem: Lagrange plus two</mods:title>
               </mods:titleInfo>
               <mods:genre>info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion peer-reviewed</mods:genre>
            </mods:mods>
         </xmlData>
      </mdWrap>
   </dmdSec>
   <structMap LABEL="DSpace Object" TYPE="LOGICAL">
      <div TYPE="DSpace Object Contents" ADMID="DMD_10256_19707"/>
   </structMap>
</mets></metadata></record></GetRecord></OAI-PMH>