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          <dc:title>Free Constructions and Coproducts of d-Frames</dc:title>
          <dc:creator>Jakl, Tomás</dc:creator>
          <dc:creator>Jung, Achim</dc:creator>
          <dc:subject>Free construction</dc:subject>
          <dc:subject>d-frame</dc:subject>
          <dc:subject>coproduct</dc:subject>
          <dc:subject>C-ideals</dc:subject>
          <dc:description>A general theory of presentations for d-frames does not yet exist. We review the difficulties and give sufficient conditions for when they can be overcome. As an application we prove that the category of d-frames is closed under coproducts.</dc:description>
          <dc:publisher>Schloss Dagstuhl – Leibniz-Zentrum für Informatik</dc:publisher>
          <dc:contributor>Tomás Jakl and Achim Jung</dc:contributor>
          <dc:date>2017</dc:date>
          <dc:relation>Is Part Of LIPIcs, Volume 72, 7th Conference on Algebra and Coalgebra in Computer Science (CALCO 2017)</dc:relation>
          <dc:type>InProceedings</dc:type>
          <dc:type>Text</dc:type>
          <dc:type>doc-type:ResearchArticle</dc:type>
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          <dc:identifier>doi:10.4230/LIPIcs.CALCO.2017.14</dc:identifier>
          <dc:identifier>urn:nbn:de:0030-drops-80304</dc:identifier>
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          <dc:language>eng</dc:language>
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