<?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>2026-06-07T19:38:42Z</responseDate><request verb="GetRecord" identifier="oai:docta.ucm.es:20.500.14352/57387" metadataPrefix="mods">https://docta.ucm.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:docta.ucm.es:20.500.14352/57387</identifier><datestamp>2023-08-25T23:40:26Z</datestamp><setSpec>com_20.500.14352_14</setSpec><setSpec>col_20.500.14352_15</setSpec></header><metadata><mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
   <mods:name>
      <mods:namePart>Díaz Sánchez, Raquel</mods:namePart>
   </mods:name>
   <mods:extension>
      <mods:dateAvailable encoding="iso8601">2023-06-20T16:54:20Z</mods:dateAvailable>
   </mods:extension>
   <mods:extension>
      <mods:dateAccessioned encoding="iso8601">2023-06-20T16:54:20Z</mods:dateAccessioned>
   </mods:extension>
   <mods:originInfo>
      <mods:dateIssued encoding="iso8601">1997-11</mods:dateIssued>
   </mods:originInfo>
   <mods:identifier type="issn">0764-4442</mods:identifier>
   <mods:identifier type="doi">10.1016/S0764-4442(97)89092-1</mods:identifier>
   <mods:identifier type="uri">https://hdl.handle.net/20.500.14352/57387</mods:identifier>
   <mods:identifier type="officialurl">http://www.sciencedirect.com/science/article/pii/S0764444297890921</mods:identifier>
   <mods:identifier type="relatedurl">http://www.sciencedirect.com/</mods:identifier>
   <mods:abstract>We prove that the space of dihedralangles of hyperbolic three-dimensional polyhedra, or of compact hyperbolicpolyhedra, of a given combinatorial type is not convex.</mods:abstract>
   <mods:language>
      <mods:languageTerm>eng</mods:languageTerm>
   </mods:language>
   <mods:accessCondition type="useAndReproduction">restricted access</mods:accessCondition>
   <mods:titleInfo>
      <mods:title>Non-convexity of the space of dihedral angles of hyperbolic polyhedra</mods:title>
   </mods:titleInfo>
   <mods:genre>journal article</mods:genre>
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