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Combinatorial Properties of Matrices of Zeros and Ones

Published online by Cambridge University Press:  20 November 2018

H. J. Ryser*
Ohio State University
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This paper is concerned with a matrix A of m rows and n columns, all of whose entries are 0's and l's. Let the sum of row i of A be denoted by ri (i = 1, … , m) and let the sum of column i of A be denoted by si (i = 1, … , n).

Research Article
Copyright © Canadian Mathematical Society 1957


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