DRAGOMIR, SILVESTRU SEVER. Determinant Inequalities for Positive Definite Matrices Via Additive and Multiplicative Young Inequalities. []. , 40, 2, pp.193-206.   08--2023. ISSN 0120-419X.  https://doi.org/10.18273/revint.v40n2-2022004.

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In this paper we prove among others that, if the positive definite matrices A, B of order n satisfy the condition 0 < mIn ≤ B − A ≤ M In, for some constants 0 < m < M, where In is the identity matrix, then 0 ≤ (1 − t) [det (A)]−1 + t [det (A + mIn)]−1 − [det (A + mtIn)]−1 ≤ (1 − t) [det (A)]−1 + t [det (B)]−1 − [det ((1 − t) A + tB)]−1 ≤ (1 − t) [det (A)]−1 + t [det (A + M In)]−1 − [det (A + M tIn)]−1 , for all t ∈ [0, 1] .

En este trabajo demostramos entre otros que, si las matrices defi-nidas positivas A, B de orden n satisfacen la condición 0< mIn ≤ B − A ≤ M In, para algunas constantes 0 < m < M, donde In es la matriz identidad, entonces 0≤ (1 − t) [det (A)]−1 + t [det (A + mIn)]−1 − [det (A + mtIn)]−1 ≤ (1 − t) [det (A)]−1 + t [det (B)]−1 − [det ((1 − t) A + tB)]−1 ≤ (1 − t) [det (A)]−1 + t [det (A + M In)]−1 − [det (A + M tIn)]−1 , para todo t ∈ [0, 1] .

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