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Whittaker's Constant for Lacunary Entire Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1963
be an entire function of exponential type r < oo. We are concerned here with two problems which are closely related to the determination of Whittaker's constant, that is to say, with theorems to the effect that if f(z) and each of its derivatives have some zeros in the unit circle then r cannot be too small. DEFINITION 1. The constant Wp is the largest
openaire   +1 more source

Strongly Lacunary Ward Continuity in 2-Normed Spaces

open access: yesThe Scientific World Journal, 2014
A function f defined on a subset E of a 2-normed space X is strongly lacunary ward continuous if it preserves strongly lacunary quasi-Cauchy sequences of points in E; that is, (f(xk)) is a strongly lacunary quasi-Cauchy sequence whenever (xk) is strongly
Hüseyin Çakalli, Sibel Ersan
doaj   +1 more source

Centered Polygonal Lacunary Sequences

open access: yesMathematics, 2019
Lacunary functions based on centered polygonal numbers have interesting features which are distinct from general lacunary functions. These features include rotational symmetry of the modulus of the functions and a notion of polished level sets.
Keith Sullivan   +2 more
doaj   +1 more source

Minimizing Error Bounds in Lacunary Interpolation by Spline (0, 2) Case [PDF]

open access: yesKirkuk Journal of Science, 2009
In this paper, we have changed the boundary conditions and the class of spline functions which are given by (Varma, (1973) from first derivative to third derivative, and show that the change of the boundary conditions and the class of spline functions ...
Karwan H. Jwamer Faridun Kader Hama Salih
doaj   +1 more source

On fully split lacunary polynomials in finite fields [PDF]

open access: yes, 2011
We estimate the number of possible types degree patterns of $k$-lacunary polynomials of degree $t < p$ which split completely modulo $p$. The result is based on a combination of a bound on the number of zeros of lacunary polynomials with some graph ...
Bibak, Khodakhast, Shparlinski, Igor E.
core   +1 more source

Maximal Functions Along Convex Curves with Lacunary Directions [PDF]

open access: yesTaiwanese Journal of Mathematics, 2022
The maximal function \(M_\gamma\) along the curve \((t,\gamma(t))\) is defined by \[ M_\gamma f(x_1,x_2):=\sup_{\varepsilon>0}\frac{1}{2\varepsilon}\int^\varepsilon_{-\varepsilon} | f(x_1-t,x_2-\gamma(t))|dt. \] The question of whether this operator \(M_\gamma\) is bounded on \(L^p(\mathbb{R}^2)\) has received much attention in the last few decades. In
openaire   +1 more source

A Note on Lacunary Sequence Spaces of Fractional Difference Operator of Order α,β

open access: yesJournal of Function Spaces, 2022
In the present paper, we defined lacunary sequence spaces of fractional difference operator of order α,β over n-normed spaces via Musielak-Orlicz function M=Ik.
Qing-Bo Cai   +2 more
doaj   +1 more source

Orlicz arithmetic convergence defined by matrix transformation and lacunary sequence [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
In this paper we introduce and study some spaces of Orlicz arithmetic convergence sequences with respect to matrix transformation and lacunary sequence.
Kuldip Raj, Anu Choudhary
doaj   +1 more source

The Cesáro Lacunary Ideal bounded linear operator of χ2 - of φ-statistical vector valued defined by a bounded linear operator of interval numbers [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2017
Let   uv mn A be a sequence of bounded linear operators from a separable Banach metric space of (X , 0) into a Banach metric space (Y, 0). Suppose that φ ∈ Φ is a countable fundamental set of X and the ideal I - of subsets \mathbb{N} x \mathbb{N ...
Deepmala   +2 more
doaj   +1 more source

Lacunary Discrete Spherical Maximal Functions

open access: yes, 2018
We prove new $\ell ^{p} (\mathbb Z ^{d})$ bounds for discrete spherical averages in dimensions $ d \geq 5$. We focus on the case of lacunary radii, first for general lacunary radii, and then for certain kinds of highly composite choices of radii.
Kesler, Robert   +2 more
openaire   +3 more sources

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