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28.319  Articles
1 of 2.833 pages  |  10  records  |  more records»
In this paper we obtained generalisations of the L. V. Taikov’s and N. Ainulloev’s sharp inequalities, which estimate a norm of function's first-order derivative (L. V. Taikov) and a norm of function's second-order derivative (N. Ainulloev) via the modulu... see more

The exact inequalities of the Jackson-Chernih type of the approximation in the Hilbert space are obtained.

The Taikov inequality, which estimates L8L_{\infty}-norm of intermediate derivative by L2L_2-norms of a function and its higher derivative, is extended on arbitrary powers of normal operator acting in Hilbert space.

In this paper, we propose the study of a conjecture whose positive solution would provide an example of a non-convex Chebyshev set in an infinite-dimensional real Hilbert space.

In this paper some necessary and sufficient conditions are given for the Hilbert’s type operators to be bounded on the Herz spaces. The corresponding new operator norm inequalities are obtained.

We propose a new (CQ) algorithm for strictly asymptotically pseudo-contractive mappings and obtain a strong convergence theorem for this class ofmappings in the framework of Hilbert spaces.DOI : http://dx.doi.org/10.22342/jims.16.1.29.25-38

By making use of the operators on Hilbert space, we introduce and studya subclass Ak of multivalent analytic functions with negative coecients. Also we obtain some geometric properties.DOI : http://dx.doi.org/10.22342/jims.21.2.228.77-82 

In the present paper we characterize, in terms of characters, multi- plicative functions, the continuous solutions of some functional equa- tions for mappings de?ned on a monoid and taking their values in a complex Hilbert space with the Hadamard product.... see more

The exact solutions of a system of linear weakly singular Volterra integral equations (VIE) have been a difficult to find.  The aim of this paper is to apply reproducing kernel Hilbert space (RKHS) method to find the approximate solutions to this typ... see more

1 of 2.833 pages  |  10  records  |  more records»