TY - JOUR

T1 - Directed Covering with Block Size 5 and Index Odd

AU - Assaf, Ahmed M.

AU - Alhalees, H.

AU - Singh, L. P.S.

PY - 2002/7

Y1 - 2002/7

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 DC(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 DC(v, 5, λ) are determined for all even integers v ≥ 5 and λ odd.

UR - http://www.scopus.com/inward/record.url?scp=34247092975&partnerID=8YFLogxK

U2 - 10.1016/S1571-0653(04)00053-8

DO - 10.1016/S1571-0653(04)00053-8

M3 - Article

AN - SCOPUS:34247092975

SN - 1571-0653

VL - 11

SP - 30

EP - 52

JO - Electronic Notes in Discrete Mathematics

JF - Electronic Notes in Discrete Mathematics

ER -