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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 3 of 3 (0.072 seconds)Spelling suggestions: "subject:"relationenalgebra"" "subject:"relationsalgebra""
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Varieties and Clones of Relational Structures / Varietäten und Klone relationaler StrukturenGrabowski, Jens-Uwe 26 June 2002 (has links) (PDF)
We present an axiomatization of relational varieties, i.e., classes of relational structures closed under formation of products and retracts, by a certain class of first-order sentences. We apply this result to categorically equivalent algebras and primal algebras. We consider the relational varieties generated by structures with minimal clone, rigid structures and two-element structures.
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Algebraic foundations of the Unifying Theories of ProgrammingGuttmann, Walter, January 2007 (has links)
Ulm, Univ., Diss., 2007.
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Varieties and Clones of Relational StructuresGrabowski, Jens-Uwe 07 June 2002 (has links)
We present an axiomatization of relational varieties, i.e., classes of relational structures closed under formation of products and retracts, by a certain class of first-order sentences. We apply this result to categorically equivalent algebras and primal algebras. We consider the relational varieties generated by structures with minimal clone, rigid structures and two-element structures.
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