<正> Continuing their two previous papers, the authors discuss in this letter the spectral duality theorem for closed operators and obtain some satisfactory results. Let X be a complex Banach space and T be a de...<正> Continuing their two previous papers, the authors discuss in this letter the spectral duality theorem for closed operators and obtain some satisfactory results. Let X be a complex Banach space and T be a densely defined closed operator in X (abbrev. T∈C_d(X)). Theorom 1. Let T∈C_d(X). If either T or T~*展开更多
Properties for tensor products of semigroups are considered and the solutions of the equationAC - CB = Q are discussed. Results obtained in this paper considerably generalize thoseobtained in [9].
文摘<正> Continuing their two previous papers, the authors discuss in this letter the spectral duality theorem for closed operators and obtain some satisfactory results. Let X be a complex Banach space and T be a densely defined closed operator in X (abbrev. T∈C_d(X)). Theorom 1. Let T∈C_d(X). If either T or T~*
文摘Properties for tensor products of semigroups are considered and the solutions of the equationAC - CB = Q are discussed. Results obtained in this paper considerably generalize thoseobtained in [9].
