2 problems

For integers $n\geq 6$, let $D_{n,3}$ denote the matrix considered in the paper, and let ${\mathop{\mathrm{rank}}}_{\mathrm{bin}}$ denote binary rank. Hefner–Henson–Lundgren–Maybee…

For each integer $n\geq 6$, let $D_{n,3}$ denote the single-block matrix used in the paper's circulant block-matrix notation. Hefner et al.'s conjecture. … This is a special case o…