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v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

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Chapter 6Cone of distance matricesFor N > 3, the cone of EDMs is no longer a circular cone andthe geometry becomes complicated...−Hayden, Wells, Liu, & Tarazaga (1991) [134,3]In the subspace of symmetric matrices S N , we know the convex cone ofEuclidean distance matrices EDM N (the EDM cone) does not intersect thepositive semidefinite cone S N + (PSD cone) except at the origin, their onlyvertex; there can be no positive nor negative semidefinite EDM. (932) [172]EDM N ∩ S N + = 0 (1008)Even so, the two convex cones can be related. In6.8.1 we prove the newequalityEDM N = S N h ∩ ( )S N⊥c − S N + (1100)2001 Jon Dattorro. CO&EDG version 2007.11.26. All rights reserved.Citation: Jon Dattorro, <strong>Convex</strong> <strong>Optimization</strong> & Euclidean Distance Geometry,Meboo Publishing USA, 2005.403

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