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AbstractIn this paper we prove among others that, if (Aj)j=1,...,m are positive definite matrices of order n ≥ 2 and qj ≥ 0, j = 1, ..., m with ∑j=1mqj=1$$\sum\nolimits_{j = 1}^m {{q_j} = 1} $$, then0≤11−mini∈{1,…,m}{ qi }×[ ∑i=1mqi(1−qi)[ det(Ai) ]−1−2n+1∑1≤i<j≤mqiqj[ det(Ai+Aj) ]−1 ]≤∑i=1mqi[ det(Ai) ]−1−[ det(∑i=1mqiAi) ]−1≤1mini∈{1,…,m}{ qi }×[ ∑i=1mqi(1−qi)[ det(Ai) ]−1−2n+1∑1≤i<j≤mqiqj[ det(Ai+Aj) ]−1 ].
Annals of West University of Timisoara - Mathematics – de Gruyter
Published: Jun 1, 2023
Keywords: Positive definite matrices; Determinants; Inequalities; 47A63; 26D15; 46C05
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