A note on p-hyponormal operators

被引:59
作者
Huruya, T [1 ]
机构
[1] Niigata Univ, Fac Educ, Niigata 95021, Japan
关键词
Furuta inequality; hyponormal operator; Weyl spectrum;
D O I
10.1090/S0002-9939-97-04004-5
中图分类号
O29 [应用数学];
学科分类号
070104 [应用数学];
摘要
Let T be a p-hyponormal operator on a Hilbert space with polar decomposition T = U\T\ and let (T) over tilde = \T\U-t\T\(r-t) for r > 0 and r greater than or equal to t greater than or equal to 0. We study order and spectral properties of T. In particular we refine recent Furuta's result on p-hyponormal operators.
引用
收藏
页码:3617 / 3624
页数:8
相关论文
共 16 条
[1]
ON P-HYPONORMAL OPERATORS FOR 0 LESS-THAN P LESS-THAN 1 [J].
ALUTHGE, A .
INTEGRAL EQUATIONS AND OPERATOR THEORY, 1990, 13 (03) :307-315
[2]
BAXLEY JV, 1971, REV ROUM MATH PURE A, V16, P1163
[3]
Bonsall F. F., 1973, Ergeb. Math. Grenzgeb., V80
[4]
PUTNAMS INEQUALITY FOR P-HYPONORMAL OPERATORS [J].
CHO, M ;
ITOH, M .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 1995, 123 (08) :2435-2440
[5]
CHO M, 1993, COMMENTATIONES MATH, V33, P23
[6]
CHO M, IN PRESS GLASGOW MAT
[7]
ON P-HYPONORMAL CONTRACTIONS [J].
DUGGAL, BP .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 1995, 123 (01) :81-86
[8]
FURUTA T, 1987, P AM MATH SOC, V101, P85
[10]
HANSEN F, 1980, MATH ANN, V246, P325