ON SPECTRA OF 2-ISOMETRIC OPERATORS

被引：0
|
作者：
Yang, Youngoh [1 ]
Kim, Cheoul Jun [1 ]
机构：
[1] Jeju Natl Univ, Dept Math & Informat, Jeju 690756, South Korea
来源：
JOURNAL OF THE KOREAN SOCIETY OF MATHEMATICAL EDUCATION SERIES B-PURE AND APPLIED MATHEMATICS | 2009年 / 16卷 / 03期
关键词：
2-isometry; spectrum; Weyl spectrum; Weyl's theorem;
D O I：
暂无
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
A Hilbert space operator T is a 2-isometry if T*T-2(2)-2T*T+I = 0. We shall study some properties of 2-isometries, in particular spectra of a non-unitary 2-isometry and give an example. Also we prove with alternate argument that the Weyl's theorem holds for 2-isometries.
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页码：277 / 281
页数：5
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