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v2007.09.13 - Convex Optimization

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D.2. TABLES OF GRADIENTS AND DERIVATIVES 577D.2.6 logarithmicMatrix logarithm.dlog(X+ t Y dt )µ = µY (X+ t Y ) −1 = µ(X+ t Y ) −1 Y ,dlog(I − t Y dt )µ = −µY (I − t Y ) −1 = −µ(I − t Y ) −1 YXY = Y X[150, p.493]D.2.7exponentialMatrix exponential. [55,3.6,4.5] [247,5.4]∇ X e tr(Y T X) = ∇ X dete Y TX = e tr(Y T X) Y (∀X,Y )∇ X tre Y X = e Y T X T Y T = Y T e XT Y Tlog-sum-exp & geometric mean [46, p.74]...d jdt j e tr(X+ t Y ) = e tr(X+ t Y ) tr j (Y )ddt etY = e tY Y = Y e tYddt eX+ t Y = e X+ t Y Y = Y e X+ t Y ,d 2dt 2 e X+ t Y = e X+ t Y Y 2 = Y e X+ t Y Y = Y 2 e X+ t Y ,XY = Y XXY = Y X

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