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    Revista Colombiana de Matemáticas
    Volumen 32 [ 1] ( 1998) Páginas 1-12


    On the graph on a Weyl group being an interval graph

    Hemendra K Patel
    Indian Institute of Technology, Kharagpur, INDIA

    Suresh G Hulsurkar
    Indian Institute of Technology, Kharagpur, INDIA


    Abstract. We consider the graph on a Weyl group whose associated root system is arbitrary. It is shown that such a graph is an interval graph only when the associated root systems are of some particular types.

    Palabras claves. Root systems, Weyl groups, interval graph.

    Codigo AMS. 1991 Primary 20F55.

    Archivo completo : Formato [PDF] (207 K). Formato [DVI] (164 K).