TY - JOUR
T1 - Directed covering with block size 5 and v even
AU - Assaf, Ahmed M.
AU - Alhalees, H.
AU - Singh, L. P.S.
PY - 2003
Y1 - 2003
N2 - A directed covering design, DC(v, k, λ), is a (v, k, 2λ) covering design in which the blocks are regarded as ordered k-tuples and in which each ordered pair of elements occurs in at least λ blocks. Let DE(v, k, λ) denote the minimum number of blocks in a DC(v, k, λ). In this paper the values of the function DE(v, 5, λ) are determined for all even integers v ≥ 5 and λ odd.
AB - A directed covering design, DC(v, k, λ), is a (v, k, 2λ) covering design in which the blocks are regarded as ordered k-tuples and in which each ordered pair of elements occurs in at least λ blocks. Let DE(v, k, λ) denote the minimum number of blocks in a DC(v, k, λ). In this paper the values of the function DE(v, 5, λ) are determined for all even integers v ≥ 5 and λ odd.
UR - http://www.scopus.com/inward/record.url?scp=84885919101&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:84885919101
SN - 1034-4942
VL - 28
SP - 3
EP - 24
JO - Australasian Journal of Combinatorics
JF - Australasian Journal of Combinatorics
ER -