A research problem
A research problem
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一个研究问题
DOI:
10.1080/03081089608818460
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发表时间:
1996
影响因子:
1.1
通讯作者:
B. Sudakov
中科院分区:
文献类型:
--
作者:
Peter Keevash;B. Sudakov
We present a conjecture which when true would generalize T. Ando's characterization of the numerical radius of (bounded linear) operators on a Hilbert space (see [A]). Some evidence for the validity of the conjecture is given. In the finite dimensional case we shall restate the conjecture in terms of convex matrix sets and norms on matrices that are invariant under unitary similarities (u.s.i. norms).