On varieties of orgraphs

• Autorzy: Alfonz Haviar , Gabriela Monoszová
• Języki publikacji: EN

Abstrakty

EN

In this paper we investigate varieties of orgraphs (that is, oriented graphs) as classes of orgraphs closed under isomorphic images, suborgraph identifications and induced suborgraphs, and we study the lattice of varieties of tournament-free orgraphs.

Słowa kluczowe

EN

orgraph; variety; lattice

Kategorie tematyczne

• 05C20: Directed graphs (digraphs), tournaments

• Wydawca: De Gruyter Open
• Czasopismo: Discussiones Mathematicae Graph Theory
• Rocznik: 2001
• Tom: 21
• Numer: 2
• Strony: 207-221

Daty

wydano

2001

otrzymano

2000-11-13

poprawiono

2001-05-16

Twórcy

autor

Alfonz Haviar

• Department of Mathematics, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia

autor

Gabriela Monoszová

• Department of Mathematics, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, 974 01, Banská Bystrica, Slovakia

Bibliografia

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• [9] A. Haviar, The lattice of varieties of graphs, Acta Univ. M. Belii, ser. Math. 8 (2000) 11-19.
• [10] P. Mihók and R. Vasky, Hierarchical Decompositions of Diagrams in Information System Analysis and Lattices of Hereditary Properties of Graphs, Proceedings of ISCM Herlany 1999, ed. A. Has cák, V. Pirc, V. Soltés (University of Technology, Košice, 2000) 126-129.
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Identyfikatory

DOI

10.7151/dmgt.1144