The c-numerical range of operator products on B(H)
The c-numerical range of operator products on B(H)
复制标题
B(H) 上算子乘积的 c 数值范围
DOI:
10.1007/s43037-019-00022-4
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发表时间:
2020
影响因子:
1.2
通讯作者:
Fang Xiaochun
中科院分区:
文献类型:
--
作者:
Zhang Yanfang;Fang Xiaochun
Let H be a complex Hilbert space of dimension >= 2 and B(H) be the algebra of all bounded linear operators on H. We give the form of surjective maps on B(H) preserving the c-numerical range of operator products when the maps preserve weak zero products. As a result, we obtain the characterization of surjectivemaps on M-n(C) preserving the c-numerical range of operator products. The proof of the results depends on some propositions of operators in B(H), which are of different interest.