TY - JOUR T1 - Several Schur complement inequalities on block Hadamard product AU - Ozel, Mustafa AU - Ileri, Ayca PY - 2017 DA - October JF - New Trends in Mathematical Sciences PB - Mustafa BAYRAM WT - DergiPark SN - 2147-5520 SP - 242 EP - 247 VL - 5 IS - 4 LA - en AB - The Schur complement theory is very important in many areas such as statistics, matrix analysis, numerical analysis, and control theory. It is a powerful tool to discuss many significant results. This paper deals with the inequalities involving block Hadamard product of positive definite matrices. By using the definition and the properties of block Hadamard product, we obtain useful inequalities on the Schur complement of the block Hadamard product of two positive definite matrices and their inverses. Finally, we give some numerical examples which confirm our theoritical analysis. KW - Block matrices KW - block Hadamard product KW - Schur complement CR - M. Günther, L. Klotz, Schur’s theorem for a block Hadamard product, Linear Algebra and its Applications, 437(2012) 948-956. CR - R. A. Horn, R. Mathias, and Y. Nakamura, Inequalilities for Unitarily Invariant Norms and Bilinear Matrix Products, Linear and Multilinear Algebra, 30(1991), 303-314. CR - B. Wang, F. Zhang, Trace and eigenvalue inequaities for ordinary and Hadamard products of positive semidefinite Hermitian matrices, SIAM J. Matrix Anal. Appl., 16(1995) 1173-1183. CR - F. Zhang, Matrix Theory: Basic results and techniques, Springer, 2011. UR - http://dergipark.org.tr/tr/pub/ntims/issue//547358 L1 - http://dergipark.org.tr/tr/download/article-file/684524 ER -