Brandi Ellis

collaborators

2 papers

math.CO2019

Signed magic rectangles with three filled cells in each column

Abdollah Khodkar, David Leach, Brandi Ellis

A {\em signed magic rectangle} $S M R (m, n; k, s)$ is an $m \times n$ array with entries from $X$ , where $X = {0, \pm 1, \pm 2, \dots,$ $\pm (mk - 1) /2}$ if $mk$ is odd and $X = \{\pm1,\pm2…

math.CO2019

Signed magic rectangles with two filled cells in each column

Abdollah Khodkar, Brandi Ellis

A signed magic rectangle $S M R (m, n; r, s)$ is an $m \times n$ array with entries from $X$ , where $X = {0, \pm 1, \pm 2, \dots,$ $\pm (m s - 1) /2}$ if $m r$ is odd and $X = \{\pm1,\pm2,\ldot…