About Aczél Inequality and Some Bounds for Several Statistical Indicators

Raţiu, Augusta; Minculete, Nicuşor

doi:10.3390/math8040574

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2021

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“…In the special case p = q = 2, we deduce the classical Aczél inequality. In [18], we found an approach of some bounds for several statistical indicators with the Aczél inequality, and in [19], we found a proof of the Aczél inequality given with tools of the Lorentz-Finsler geometry.…”

Section: Introductionmentioning

confidence: 99%

About the Cauchy–Bunyakovsky–Schwarz Inequality for Hilbert Space Operators

Minculete

2021

Symmetry

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The symmetric shape of some inequalities between two sequences of real numbers generates inequalities of the same shape in operator theory. In this paper, we study a new refinement of the Cauchy–Bunyakovsky–Schwarz inequality for Euclidean spaces and several inequalities for two bounded linear operators on a Hilbert space, where we mention Bohr’s inequality and Bergström’s inequality for operators. We present an inequality of the Cauchy–Bunyakovsky–Schwarz type for bounded linear operators, by the technique of the monotony of a sequence. We also prove a refinement of the Aczél inequality for bounded linear operators on a Hilbert space. Finally, we present several applications of some identities for Hermitian operators.

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Section: Introductionmentioning

confidence: 99%