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Facial structures for positive linear maps in two-dimensional matrix algebra |
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| Authors: | Byeon Eung-Soo Kye Seung-Hyeok |
| Institution: | (1) Department of Mathematics, Seoul National University, Seoul, 151-742, South Korea |
| Abstract: | We completely determine the lattice structure for the faces of the convex cone of all positive linear maps between the 2×2 matrix algebras, in terms of pairs of subspaces of M 2. |
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