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On PBIBD Designs Based on Triangular Schemes
Malcolm Greig1, Donald L. Kreher2 and Alan C.H. Ling2
1Greig Consulting, North Vancouver, B.C., Canada
greig@sfu.ca
2Department of Mathematical Sciences, Michigan Technological University Houghton, MI 49931-1295, USA
{kreher, aling}@mtu.edu
Annals of Combinatorics 6 (2) p.147-155 June, 2002
AMS Subject Classification: 05B30, 05C65, 60C05, 62K99
Abstract:
We settle all but four of the remaining open small parameter situations for partially balanced incomplete block designs with 2 associate classes (PBIBD(2)) that can be based on triangular schemes.
Keywords: partially balanced incomplete block designs, association schemes, triangular designs

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