Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Ghazanfari, A. G."'
Autor:
Ghazanfari, A. G.
In this article we present some new comparisons between the Heinz and Heron operator means, which improve some recent results known from the literature. We derive some refinements of these inequalities for unitarily invariant norms with the help of t
Externí odkaz:
http://arxiv.org/abs/2105.03825
Autor:
Ghazanfari, A. G.
Let $f$ be an operator convex function on $(0,\infty)$, and $\Phi$ be a unital positive linear maps on $B(H)$. we give a complementary inequality to Davis-Choi-Jensen's inequality as follows \begin{equation*} f(\Phi(A))\geq \frac{4R(A,B)}{(1+R(A,B))^
Externí odkaz:
http://arxiv.org/abs/2105.03823
Publikováno v:
Journal of Mathematical Analysis, Volume 7 Issue 5(2016), Pages 147-155
We give some new refinements of Heinz inequality and an improvement of the reverse Young's inequality for scalars and we use them to establish new inequalities for operators and the Hilbert-Schmidt norm of matrices. We give a uniformly and abbreviate
Externí odkaz:
http://arxiv.org/abs/1703.02580
Akademický článek
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Autor:
Ghazanfari, A. G., Alizadeh, Z.
In this paper we introduce ternary modules over ternary algebras and using fixed point methods, we prove the stability and super-stability of ternary additive, quadratic, cubic and quartic derivations and $\sigma$-homomorphisms in such structures for
Externí odkaz:
http://arxiv.org/abs/1506.02536
Autor:
Ghazanfari, A. G., Soleimani, S.
Some Gruss type inequalities in semi-inner product modules over C*-algebras for n-tuples of vectors are established. Also we give their natu- ral applications for the approximation of the discrete Fourier and the Melin transforms of bounded linear op
Externí odkaz:
http://arxiv.org/abs/1506.02519
Autor:
Ghazanfari, A. G., Barani, A.
In this paper we introduce operator preinvex functions and es- tablish a Hermite-Hadamard type inequality for such functions. We give an estimate of the right hand side of a Hermite-Hadamard type inequality in which some operator preinvex functions o
Externí odkaz:
http://arxiv.org/abs/1412.5958
Autor:
Ghazanfari, A. G., Ghazanfari, B.
Some Gr\"{u}ss type inequalities in semi-inner product modules over $C^*$-algebras and $H^*$-algebras for $n$-tuples of vectors are established. Also we give their natural applications for the approximation of the discrete Fourier and the Melin trans
Externí odkaz:
http://arxiv.org/abs/1409.4990
In this paper we establish a Hermite- Hadamard type inequality for operator preinvex functions and an estimate of the right hand side of a Hermite- Hadamard type inequality in which some operator preinvex functions of selfadjoint operators in Hilbert
Externí odkaz:
http://arxiv.org/abs/1306.0730
Autor:
Ghazanfari, Amir G.
In this paper we establish some new Hermite-Hadamard type inequalities for two operator convex functions of selfadjoint operators in Hilbert spaces.
Externí odkaz:
http://arxiv.org/abs/1207.0928