4-blocked Hadamard 3-designs

Abstract

The important role of Hadamard designs for applications in several fields has been long established. A considerable problem of finite geometry is to determine the configurations of the minimum number of points that block a design, i.e. the shape of a minimum set of points which have at least one point in common with any block. In this paper we deal with… (More)
DOI: 10.1016/S0012-365X(96)00316-0

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