Characterizations of Zero-Term Rank Preservers of Matrices over Semirings
Characterizations of Zero-Term Rank Preservers of Matrices over Semirings
Let M(S) denote the set of all m£n matrices over a semiring S. For A 2 M(S), zero-term rank of A is the minimal number of lines (rows or columns) needed to cover all zero entries in A. In (5), the authors obtained that a linear operator on M(S) preserves …