On topological spaces associated with digraphs. (English) Zbl 0164.24903


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[1] T. J. Ahlborn,On Directed Graphs and Related Topological Spaces. M. A. Thesis, Kent State University (August 1964). · JFM 16.0438.01
[2] C. E. Aull andW. J. Thron, Separation Axioms BetweenT 0 andT 1.Indagationes Math.,24 (1962), pp. 26–37.
[3] C. Berge (translated byA. Doig),The Theory of Graphs and Its Applications, Wiley and Sons, New York (1962). · Zbl 0097.38903
[4] T. N. Bhargava, Time Changes in a Digraph,Journal of Applied Probability, Vol. 2, No. 1 (1965). · Zbl 0138.17104
[5] F. Harary, Unsolved Problems in the Enumeration of Graphs.Publications of the Hungarian Academy of Sciences, Vol. V, Series A (1960). · Zbl 0095.16902
[6] J. L. Kelley,General Topology, Van Nostrand, New Jersey (1955).
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