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A trace inequality for positive definite matrices

Published 20 Nov 2010 in math.FA | (1011.6325v1)

Abstract: In this note we prove that Tr (MN+ PQ)>= 0 when the following two conditions are met: (i) the matrices M, N, P, Q are structured as follows: M = A -B, N = inv(B)-inv(A), P = C-D, Q =inv (B+D)-inv(A+C), where inv(X) denotes the inverse matrix of X (ii) A, B are positive definite matrices and C, D are positive semidefinite matrices.

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Authors (3)

  1. E. V. Belmega 
  2. S. Lasaulce 
  3. M. Debbah 

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