An axiomatization of graphs

  • Authors:
  • Symeon Bozapalidis;Antonios Kalampakas

  • Affiliations:
  • Aristotle University of Thessaloniki, Department of Mathematics, 54006, Thessaloniki, Greece;Aristotle University of Thessaloniki, Department of Mathematics, 54006, Thessaloniki, Greece

  • Venue:
  • Acta Informatica
  • Year:
  • 2004

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Abstract

The magmoid of hypergraphs labelled over a finite doubly ranked alphabet, is characterized as the quotient of the free magmoid generated by this alphabet divided by a finite set of equations. Thus a relevant open problem, posed by Engelfriet and Vereijken, is being solved.