Abstract:

It is a special matrix class for nonsingular H matrix with wide application s. How to judge the matrix to be a  nonsingular H matrix or  is a important problem for the computation math ematics. Two sufficient conditions for nonsingular H matrix are given that are an available and necessary supplement in[1-4].  Finally two examples are given to show their explication.

Key words: H-matrix, Irreducibility, Diagonal dominance