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  5. The Interior of Numerical Ranges of Op erators

The Interior of Numerical Ranges of Op erators

来源 :数学季刊（英文版） | 被引量 : 0次 | 上传用户：w66827552
【摘 要】
：
In this note, some properties of the interior of numerical ranges of operators are established, and an alternative proof of Embry’s theorem associated with the
【作 者】
：
DOU Yan-ni LI Chen-xin LI Rong 
【机 构】
：
College of Mathematics and Information Science
【出 处】
：
数学季刊（英文版）
【发表日期】
：
2004年期
【关键词】
：
numerical range interior of numerical range boundary of numerical range 
【基金项目】
：
Foundation item：Supported by the National Natural Science Foundation of China;Supported by the Fundamental Research Funds for the Central Universities
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论文部分内容阅读
In this note, some properties of the interior of numerical ranges of operators are established, and an alternative proof of Embry’s theorem associated with the interior of a numerical ranges of an operator is given(see [3]).
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