Convertible subspaces of Hessenberg-type matrices
Summary: We describe subspaces of generalized Hessenberg matrices where the determinant is convertible into the permanent by affixing \(\pm\) signs. An explicit characterization of convertible Hessenberg-type matrices is presented. We conclude that convertible matrices with the maximum number of nonzero entries can be reduced to a basic set.
scientific article; zbMATH DE number 6898708