ISSN 1234-3099 (print version)

ISSN 2083-5892 (electronic version)

Discussiones Mathematicae Graph Theory

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Discussiones Mathematicae Graph Theory


Discussiones Mathematicae Graph Theory 24(3) (2004) 431-441
DOI: 10.7151/dmgt.1242


Mekkia Kouider

Laboratoire de Recherche en Informatique
UMR 8623 Bât. 490, Université Paris Sud
91405 Orsay, France


Preben Dahl Vestergaard

Department of Mathematics
Aalborg University, Fredrik Bajers Vej 7G
DK-9220 Aalborg Øst, Denmark



Let a and b be integers 4 ≤ a ≤ b. We give simple, sufficient conditions for graphs to contain an even [a,b]-factor. The conditions are on the order and on the minimum degree, or on the edge-connectivity of the graph.

Keywords: even factor, eulerian, spanning subgraph.

2000 Mathematics Subject Classification: 05C70.


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Received 22 April 2003
Revised 9 October 2003