Generalization of Scarpis's theorem on Hadamard matrices

Dragomir Z. Djokovic

A $\{1,-1\}$-matrix $H$ of order $m$ is a Hadamard matrix if $H{H}^T=m{I}_m$, where $T$ is the transposition operator and $I_m$ the identity matrix of order $m$. J. Hadamard published…