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Distance-regular digraphs of girth 6. (English) Zbl 0751.05049
The author reports that he has shown elsewhere that all intersection numbers of a distance-regular digraph of girth 6 and diameter 5 can be expressed in terms of three parameters; he then discusses a character- algebra associated with such digraphs.

MSC:
05C20 Directed graphs (digraphs), tournaments
05E30 Association schemes, strongly regular graphs
05C12 Distance in graphs
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