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math.OA2010★ 27 cited
Product numerical range in a space with tensor product structure
Zbigniew Puchała, Piotr Gawron, Jarosław Adam Miszczak +3
We study operators acting on a tensor product Hilbert space and investigate their product numerical range, product numerical radius and separable numerical range. Concrete bounds f…
math.OA2010★ 1 cited
Cones with a Mapping Cone Symmetry in the Finite-Dimensional Case
Łukasz Skowronek
In the finite-dimensional case, we present a new approach to the theory of cones with a mapping cone symmetry, first introduced by Størmer. Our method is based on a definition of a…