In the present paper we study fundamental reducibility of normal operators on Krein space. Fundamental reducibility of selfadjoint operators on Krein space, also fundamental reducibility of normal operators on Pontrjagin space has been studied in [1], [2]. For basic definitions and facts on Krein spaces and operators in these spaces we refer to [3].
机构:
Department of Computer and Systems Sciences, Nankai University, Tianjin, 300071Department of Computer and Systems Sciences, Nankai University, Tianjin, 300071