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v2007.09.17 - Convex Optimization

v2007.09.17 - Convex Optimization

v2007.09.17 - Convex Optimization

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CONVEX OPTIMIZATION & EUCLIDEAN DISTANCE GEOMETRY 117.4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479A Linear algebra 481A.1 Main-diagonal δ operator, λ , trace, vec . . . . . . . . . . . . 481A.2 Semidefiniteness: domain of test . . . . . . . . . . . . . . . . . 485A.3 Proper statements . . . . . . . . . . . . . . . . . . . . . . . . . 488A.4 Schur complement . . . . . . . . . . . . . . . . . . . . . . . . 500A.5 eigen decomposition . . . . . . . . . . . . . . . . . . . . . . . . 504A.6 Singular value decomposition, SVD . . . . . . . . . . . . . . . 507A.7 Zeros . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512B Simple matrices 519B.1 Rank-one matrix (dyad) . . . . . . . . . . . . . . . . . . . . . 520B.2 Doublet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525B.3 Elementary matrix . . . . . . . . . . . . . . . . . . . . . . . . 526B.4 Auxiliary V -matrices . . . . . . . . . . . . . . . . . . . . . . . 528B.5 Orthogonal matrix . . . . . . . . . . . . . . . . . . . . . . . . 533C Some analytical optimal results 537C.1 properties of infima . . . . . . . . . . . . . . . . . . . . . . . . 537C.2 diagonal, trace, singular and eigen values . . . . . . . . . . . . 538C.3 Orthogonal Procrustes problem . . . . . . . . . . . . . . . . . 544C.4 Two-sided orthogonal Procrustes . . . . . . . . . . . . . . . . 546D Matrix calculus 551D.1 Directional derivative, Taylor series . . . . . . . . . . . . . . . 551D.2 Tables of gradients and derivatives . . . . . . . . . . . . . . . 572E Projection 581E.1 Idempotent matrices . . . . . . . . . . . . . . . . . . . . . . . 584E.2 I − P , Projection on algebraic complement . . . . . . . . . . . 589E.3 Symmetric idempotent matrices . . . . . . . . . . . . . . . . . 590E.4 Algebra of projection on affine subsets . . . . . . . . . . . . . 596E.5 Projection examples . . . . . . . . . . . . . . . . . . . . . . . 596E.6 Vectorization interpretation, . . . . . . . . . . . . . . . . . . . 603E.7 on vectorized matrices of higher rank . . . . . . . . . . . . . . 610E.8 Range/Rowspace interpretation . . . . . . . . . . . . . . . . . 614E.9 Projection on convex set . . . . . . . . . . . . . . . . . . . . . 614

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