Document Type : Research Paper
Department of Mathematics, Manonmaniam Sundaranar University, Tirunelveli - 627 012, Tamilnadu, India
The notion of Asteroidal triples was introduced by Lekkerkerker and Boland . D.G.Corneil and others , Ekkehard Kohler  further investigated asteroidal triples. Walter generalized the concept of asteroidal triples to asteroidal sets . Further study was carried out by Haiko Muller . In this paper we find asteroidal numbers for Direct product of cycles, Direct product of path and cycle, Strong product of paths and cycles and some more graphs.