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math.CO2017
Alternating Sign Matrices and Hypermatrices, and a Generalization of Latin Square
Richard A. Brualdi, Geir Dahl
An alternating sign matrix, or ASM, is a -matrix where the nonzero entries in each row and column alternate in sign. We generalize this notion to hypermatrices: an $n\t…
math.CO2017★ 1 cited
Dihedral Transportation and (0,1)-Matrix Classes
Richard A. Brualdi, Bruce E. Sagan
Let R and S be two vectors of real numbers whose entries have the same sum. In the transportation problems one wishes to find a matrix A with row sum vector R and column sum vector…