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 give...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]).展开更多
基金Supported by the National Natural Science Foundation of China(11571211,11301318,11171197,11471200)Supported by the Fundamental Research Funds for the Central Universities(GK201301007)
文摘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]).
