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               <dc:title>Tangential trapezoid central configurations</dc:title>
               <dc:creator>Yuan, Pengfei</dc:creator>
               <dc:creator>Llibre, Jaume</dc:creator>
               <dc:subject>Convex central configuration</dc:subject>
               <dc:subject>Four-body problem</dc:subject>
               <dc:subject>Tangential trapezoid</dc:subject>
               <dc:description>A tangential trapezoid, also called a circumscribed trapezoid, is a trapezoid whose four sides are all tangent to a circle within the trapezoid: the in-circle or inscribed circle. In this paper we classify all planar four-body central configurations, where the four bodies are at the vertices of a tangential trapezoid.</dc:description>
               <dc:date>2020</dc:date>
               <dc:type>Article</dc:type>
               <dc:relation>Ministerio de Economía y Competitividad MTM2016-77278-P</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>Regular and Chaotic Dynamics ; Vol. 25, Issue 6 (November 2020), p. 651-661</dc:relation>
               <dc:rights>open access</dc:rights>
               <dc:rights>Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.</dc:rights>
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