Mathematics – Operator Algebras
Scientific paper
2008-12-04
Bull. Iranian Math. Soc. 35 (2009), no. 2, 67-74
Mathematics
Operator Algebras
7 Pages, to appear in Bull. Iranian Math. Soc
Scientific paper
We establish an operator extension of the following generalization of Bohr's inequality, due to M.P. Vasi\'c and D.J. Ke\v{c}ki\'{c}: $$|\sum_{i=1}^n z_i|^r \leq (\sum_{i=1}^n \alpha_i^{1/(1-r)})^{r-1}\sum_{i=1}^n \alpha_i|z_i|^r \quad (r>1, z_i \in{\mathbb C}, \alpha_i>0, 1 \leq i \leq n) .$$ We also present some norm inequalities related to our noncommutative generalization of Bohr's inequality.
Moslehian Mohammad Sal
Pecaric Josip
Peric Ivan
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