%0 Journal Article
%T A generalization of Alternating Sign Matrices
%A Richard A. Brualdi
%A Hwa Kyung Kim
%J Mathematics
%D 2013
%I arXiv
%X In alternating sign matrices the first and last nonzero entry in each row and column is specified to be +1. Such matrices always exist. We investigate a generalization by specifying independently the sign of the first and last nonzero entry in each row and column to be either a +1 or a -1. We determine necessary and sufficient conditions for such matrices to exist.
%U http://arxiv.org/abs/1309.1040v1