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quant-ph2005★ 22 cited
Cones of ball-ball separable elements
Roland Hildebrand
Let B_1,B_2 be balls in finite-dimensional real vector spaces E_1,E_2, centered around unit length vectors v_1,v_2 and not containing zero. An element in the tensor product space E…
quant-ph2005★ 60 cited
PPT from spectra
Roland Hildebrand
In this contribution we solve the following problem. Let H_{nm} be a Hilbert space of dimension nm, and let A be a positive semidefinite self-adjoint linear operator on H_{nm}. Und…