The application of Kronecker product of matrices to construction of certain PBB designs
Mathematica Applicanda, Tome 21 (1992) no. 35.

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In this paper it is shown that Kronecker product of the unit matrix and the incidence matrix of PBB design with m associate classes is the incidence matrix of PBB design with 2m+1 associate classes. Also association matrices, their parameters and the spectral expansion of C matrix of PBB design with 2m+1 associate classes is given.
Mots-clés : Block designs 
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     title = {The application of {Kronecker} product of matrices to construction of certain {PBB} designs},
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H. Brzeskwiniewicz. The application of Kronecker product of matrices to construction of certain PBB designs. Mathematica Applicanda, Tome 21 (1992) no. 35. https://geodesic-test.mathdoc.fr/item/MA_1992__21_35_292581/