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pro vyhledávání: '"Najafi, Hamed"'
In this paper, we study operator mean inequalities for the weighted arithmetic, geometric and harmonic means. We give a slight modification of Audenaert's result to show the relation between Kwong functions and operator monotone functions. Operator m
Externí odkaz:
http://arxiv.org/abs/2405.05290
Publikováno v:
2019 Smart Grid Conference (SGC), Tehran, Iran, 2019, pp. 1-5
Humans have always been seeking greater control over their surrounding objects. Today, with the help of Internet of Things (IoT), we can fulfill this goal. In order for objects to be connected to the internet, they should have an address, so that the
Externí odkaz:
http://arxiv.org/abs/1811.01178
Publikováno v:
Positivity 22 (2018), no. 5, 1255-1263
Let $\mathbb{B}_J(\mathcal H)$ denote the set of self-adjoint operators acting on a Hilbert space $\mathcal{H}$ with spectra contained in an open interval $J$. A map $\Phi\colon\mathbb{B}_J(\mathcal H)\to {\mathbb B}(\mathcal H)_\text{sa} $ is said t
Externí odkaz:
http://arxiv.org/abs/1708.07028
Autor:
Moslehian, Mohammad Sal, Najafi, Hamed
Publikováno v:
Linear Algebra Appl. 437 (2012), no. 9, 2359-2365
We extend the celebrated L\"owner--Heinz inequality by showing that if $A, B$ are Hilbert space operators such that $A > B \geq 0$, then A^r - B^r \geq ||A||^r-(||A||- \frac{1}{||(A-B)^{-1}||})^r > 0 for each $0 < r \leq 1$. As an application we prov
Externí odkaz:
http://arxiv.org/abs/1207.2864
Autor:
Najafi, Hamed
Publikováno v:
In Linear Algebra and Its Applications 1 November 2017 532:127-139
Autor:
Badini Hasan, Najafi Hamed
Publikováno v:
Faṣlnāmah-i Pizhūhish-i Huqūq-i Khuṣūṣī, Vol 5, Iss 18, Pp 9-42 (2017)
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Externí odkaz:
https://doaj.org/article/8a4d96c1fb20498f824fcb7360ae0070
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Autor:
Najafi, Hamed
Publikováno v:
In Linear Algebra and Its Applications 1 November 2013 439(9):2634-2641
Autor:
Najafi, Hamed
Publikováno v:
Glasgow Mathematical Journal; Jan2023, Vol. 65 Issue 1, p121-127, 7p