A note on strong and co-strong perfectness of the X-join of graphs
نویسندگان
چکیده
Strongly perfect graphs were introduced by C. Berge and P. Duchet in [1]. In [4], [3] the following was studied: the problem of strong perfectness for the Cartesian product, the tensor product, the symmetrical difference of n, n ≥ 2, graphs and for the generalized Cartesian product of graphs. Co-strong perfectness was first studied by G. Ravindra and D. Basavayya [5]. In this paper we discuss strong perfectness and costrong perfectness for the generalized composition (the lexicographic product) of graphs named as the X-join of graphs.
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عنوان ژورنال:
- Discussiones Mathematicae Graph Theory
دوره 16 شماره
صفحات -
تاریخ انتشار 1996