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On the 2-adjugate mod 2 class of designs. (English) Zbl 0677.05013

As the technique for obtaining a class of designs called (by Vartak and Patwardhan) generalized PBIB designs is complicated, the author proposes an equivalent simple procedure based on combination of a BIBD and a multiple 2-associated design.
Reviewer: M.Kratko

MSC:

05B05 Combinatorial aspects of block designs
05B30 Other designs, configurations
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References:

[1] Clatworthy, W. H., Tables of Two-Associate Partially Balanced Designs (1973), National Bureau of Standards: National Bureau of Standards Washington, D.C · Zbl 0153.48301
[2] Hall, M., Combinatorial Theory, ((1967), Blaisdell: Blaisdell Waltham, MA) · Zbl 0196.02401
[3] Patwardhan, G. A., Partially balanced incomplete block designs from 4-designs, J. Combin. Inform. System Sci., 8, No. 1, 26-29 (1983) · Zbl 0624.05008
[4] Vartak, M. N.; Patwardhan, G. A., The 2-adjugate mod 2 class of designs, J. Combin. Theory Ser. A, 11, No. 1, 11-26 (1971) · Zbl 0228.05012
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