On the minimal number of even submatrices of 0-1 matrices
A 0-1 matrix is called even if the sum of its entries is even, and odd otherwise. The minimum possible number of even \(p\times q\) submatrices of an \(m\times n\) 0-1 matrix is obtained when \(pq\) is even.
scientific article; zbMATH DE number 934921