Completely positive mappings and mean matrices
Completely positive mappings and mean matrices
复制标题
完全正映射和均值矩阵
DOI:
10.1016/j.laa.2011.01.043
复制
发表时间:
2010
影响因子:
1.1
通讯作者:
D. Petz
中科院分区:
文献类型:
--
作者:
Ádám Besenyei;D. Petz
Some functions f: R+→ R+ induce mean of positive numbers and the matrix monotonicity gives a possibility for means of positive definite matrices. Moreover, such a function f can define a linear mapping J D f-1: M n→ M n on matrices (which is basic in the constructions of monotone metrics). The present subject is to check the complete positivity of J D f-1 in the case of a few concrete functions f. This problem has been motivated by applications in quantum information.