A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
Given an m x m Hadamard matrix one can extract m2 symmetric designs on m -1 points each of which extends uniquely to a 3-design. Further, when m is a square, certain Hadamard matrices yield symmetric designs on m points. We study these, and other classes of designs associated with Hadamard matrices, using the tools of algebraic coding theory and the customary association of linear codes with designs. This leads naturally to the notion, defined for any prime p , of p-equivalence for Hadamarddoi:10.1090/s0002-9947-1992-1040046-6 fatcat:f5xlybg4rfba3be7tyvl6xcz2e