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math.FA2021
Matrix power means and new characterizations of operator monotone functions
Trung Hoa Dinh, Cong Trinh Le, The Van Nguyen +1
For positive definite matrices and , the Kubo-Ando matrix power mean is defined as $$ P_μ(p, A, B) = A^{1/2}\left(\frac{1+(A^{-1/2}BA^{-1/2})^p}{2}\right )^{1/p} A^{1/2}\qua…
math.FA2019
Tracial moment problems on hypercubes
Cong Trinh Le
In this paper we introduce the "tracial -moment problem" and the "sequential matrix-valued -moment problem" and show the equivalence of the solvability of these problems. Usi…
math.FA2019
Two trace inequalities for operator functions
Trung Hoa Dinh, Minh Toan Ho, Cong Trinh Le +1
In this paper we show that for a non-negative operator monotone function on such that and for any positive semidefinite matrices and , $$ Tr((A-B…