Włodzimierz Łenski

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All published works

Action	Title	Year	Authors
+	On approximation of functions by very general matrix means of their Fourier series	2025	Xhevat Z. Krasniqi Włodzimierz Łenski Bogdan Szal
+	On generalization of some theorems with absolute summability factors of infinite series	2024	Włodzimierz Łenski Bogdan Szal
+	Seminormed approximation of functions by operators based on their Fourier series	2024	Włodzimierz Łenski Bogdan Szal R. N. Mohapatra
+ PDF Chat	Pointwise summability of Fourier-Laguerre series of integrable functions	2023	Maciej Kubiak Włodzimierz Łenski Bogdan Szal
+	Seminormed approximation by deferred matrix means of integrable functions in $$H_{P}^{(\omega )}$$ space	2022	Xhevat Z. Krasniqi Włodzimierz Łenski Bogdan Szal
+	Approximation by some subsequences of matrix means	2022	Xhevat Z. Krasniqi Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of integrable functions by general linear matrix operators of their Fourier series	2022	Vishnu Narayan Mishra Włodzimierz Łenski Bogdan Szal
+	APPROXIMATION OF INTEGRABLE FUNCTIONS BY GENERALIZED DE LA VALLÉE POUSSIN MEANS OF THE POSITIVE ORDER	2021	Xhevat Z. Krasniqi Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise (H, Φ) Strong Approximation by Fourier Series of LΨ Integrable Functions	2021	Włodzimierz Łenski
+ PDF Chat	Trigonometric approximation of functions in seminormed spaces	2021	Włodzimierz Łenski U. P. Singh Bogdan Szal
+ PDF Chat	On estimates of deviation of conjugate functions from matrix operators of their Fourier series by some expressions with r-differences of the entries	2021	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise approximation of functions by matrix operators of their Fourier series with r-differences of the entries	2020	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise approximation of modified conjugate functions by matrix operators of their Fourier series with the use of some parameters	2020	Bogdan Szal Włodzimierz Łenski
+ PDF Chat	Trigonometric Approximation of Functions from $$L_{2\pi }^{p(x)}$$	2020	Włodzimierz Łenski Bogdan Szal
+	Estimates of convolution operators of functions from $L_{2\pi}^{p(x)}$	2019	Włodzimierz Łenski Bogdan Szal
+	Pointwise approximation of functions by matrix operators of their Fourier series with $r$- differences of the entries	2019	Włodzimierz Łenski Bogdan Szal
+	On estimates of deviation of conjugate functions from matrix operators of their Fourier series by some expressions with $r$-differences of the entries	2019	Włodzimierz Łenski Bogdan Szal
+	Pointwise strong (H, Phi) approximation by Fourier series of L^{Psi} integrable functions	2019	Włodzimierz Łenski
+	Pointwise summability of Fourier-Laguerre series of integrable functions	2019	Maciej Kubiak Włodzimierz Łenski Boogdan Szal
+	Pointwise approximation of functions by matrix operators of their Fourier series with $r$- differences of the entries	2019	Włodzimierz Łenski Bogdan Szal
+	On estimates of deviation of conjugate functions from matrix operators of their Fourier series by some expressions with $r$-differences of the entries	2019	Włodzimierz Łenski Bogdan Szal
+	Estimates of convolution operators of functions from $L_{2π}^{p(x)}$	2019	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise approximation of 2 π/r-periodic functions by matrix operators of their Fourier series with r-differences of the entries	2018	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise $$\left( H,\Phi \right) $$H,Φ Strong Approximation by Fourier Series of $$L^{1}$$L1 Integrable Functions	2018	Włodzimierz Łenski
+	Pointwise Convergence of Fourier-Laguerre Series of Integrable Functions	2018	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise approximation of modified conjugate functions by matrix operators of conjugate Fourier series of 2 π / r $2\pi /r$ -periodic functions	2018	Mateusz Kubiak Włodzimierz Łenski Bogdan Szal
+	Pointwise approximation of modified conjugate functions by matrix operators of their Fourier series	2018	Włodzimierz Łenski Bogdan Szal
+	On approximation of functions by some hump matrix means of Fourier series	2016	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of Integrable Functions by Wavelet Expansions	2016	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	On Estimates of Deviation of Functions from Matrix Operators of Their Fourier Series by Some Expressions withr-Differences of the Entries	2016	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	On pointwise approximation of functions by some matrix means of Fourier series	2016	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise strong approximation of almost periodic functions	2016	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	On Pointwise Approximation of Functions by Some Matrix Means of Conjugate Fourier Series	2015	Włodzimierz Łenski Bogdan Szal
+	Approximation of functions from $${L^{p} {(\omega)}_{\beta}}$$ L p ( ω ) β by general linear operators	2015	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	On Pointwise Approximation of Conjugate Functions by Some Hump Matrix Means of Conjugate Fourier Series	2015	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise strong approximation of almost periodic functions in S^1	2015	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Erratum to “Pointwise Analog of the Stečkin Approximation Theorem”	2014	Włodzimierz Łenski
+ PDF Chat	Approximation of Conjugate Functions by General Linear Operators of Their Fourier Series at the Lebesgue Points	2014	Włodzimierz Łenski Bogdan Szal
+	Approximation of conjugate functions by general linear operators of their Fourier series at the Lebesgue points	2014	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	On the degree of strong approximation of integrable functions in Stepanov sense	2014	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Strong approximation of almost periodic functions	2014	Włodzimierz Łenski Bogdan Szal
+	Approximation of conjugate functions by general linear operators of their Fourier series at the Lebesgue points	2014	Włodzimierz Łenski Bogdan Szal
+	Applications of general monotone sequences to strong approximation by Fourier series	2013	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise Analog of the Stečkin Approximation Theorem	2013	Włodzimierz Łenski
+	Pointwise strong approximation of almost periodic functions in S^1	2012	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of functions from L p (ω) β by matrix means of their Fourier series	2012	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	Strong approximation of almost periodic functions	2012	Włodzimierz Łenski Bogdan Szal
+	Pointwise strong approximation of almost periodic functions	2012	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	Pointwise analog of the Ste\v{c}kin approximation theorem	2012	Włodzimierz Łenski
+	Pointwise analog of the Ste\v{c}kin approximation theorem	2012	Włodzimierz Łenski
+	Pointwise strong and very strong approximation by Fourier series of integrable functions	2012	Włodzimierz Łenski
+	Pointwise strong and very strong approximation in L	2012	Włodzimierz Łenski
+	Pointwise strong and very strong approximation by Fourier series of integrable functions	2012	Włodzimierz Łenski
+	Pointwise analog of the Stečkin approximation theorem	2012	Włodzimierz Łenski
+	On some Leindler's theorem on application of the class NMCS	2012	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Pointwise Approximation of Functions from by Linear Operators of Their Fourier Series	2012	Włodzimierz Łenski Bogdan Szal
+	On the degree of strong approximation of almost periodic functions in the Stepanov sense	2012	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	On the degrees of approximation of functions belonging to L^p (ω̃)_β class by matrix means of conjugate Fourier series	2012	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	Approximation of functions from Lp(w)b by matrix means of their Fourier series	2012	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	Pointwise analog of the Stečkin approximation theorem	2012	Włodzimierz Łenski
+	Pointwise strong and very strong approximation by Fourier series of integrable functions	2012	Włodzimierz Łenski
+	Pointwise strong approximation of almost periodic functions in S^1	2012	Włodzimierz Łenski Bogdan Szal
+	Pointwise strong approximation of almost periodic functions	2012	Radosława Kranz Włodzimierz Łenski Bogdan Szal
+	Strong approximation of almost periodic functions	2012	Włodzimierz Łenski Bogdan Szal
+	Approximation of integrable functions by general linear operators of their fourier series	2011	Włodzimierz Łenski Bogdan Szal
+	Pointwise analog of the jackson approximation theorem	2011	Włodzimierz Łenski
+	Approximation of integrable functions by general linear operators of their Fourier series at the Lebesgue points	2011	Włodzimierz Łenski Bogdan Szal
+	Approximation of functions from IP {uj)p by linear operators of their Fourier series	2011	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of functions from L<sup>p</sup>(\widetildeω)<sub>β</sub>by linear operators of conjugate Fourier series	2011	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of functions from L<sup>p</sup>(ω)<sub>β</sub>by general linear operators of their Fourier series	2011	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Lebesgue type points in strong (C,α) approximation of Fourier series	2011	Włodzimierz Łenski Bogdan Roszak
+	Approximation of functions from $L^p(\omega)_\beta$ by linear operators of their Fourier series	2011	Włodzimierz Łenski Bogdan Szal
+	On the degree of strong approximation of functions and conjugate functions	2010	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	ON THE DEGREE OF STRONG APPROXIMATION OF FUNCTIONS AND CONJUGATE FUNCTIONS	2010	Włodzimierz Łenski Bogdan Szal
+ PDF Chat	Approximation of functions belonging to the class L^p(ω)_β by linear operators	2009	Włodzimierz Łenski Bogdan Szal
+	Pointwise approximation by de la Vallée-Poussin means	2008	Włodzimierz Łenski
+	Pointwise strong and very strong approximation by matrix means of Fourier series	2008	Włodzimierz Łenski Bogdan Szal
+	On the rate of pointwise strong summability of orthogonal expansions	2007	Włodzimierz Łenski Radosława Kranz
+	Pointwise strong and very strong approximation of Fourier series	2007	Włodzimierz Łenski
+	On the approximation of functions by matrix means in the generalized Hölder metric	2007	Włodzimierz Łenski Bogdan Szal
+	On the pointwise strong approximation by (C,1)(E,1) means	2007	Włodzimierz Łenski Bogdan Roszak
+	On the degree of strong approximation of integrable functions.	2007	Włodzimierz Łenski
+	Remark on the inequality of F. Riesz	2005	Włodzimierz Łenski
+ PDF Chat	ON THE RATE OF POINTWISE STRONG SUMMABILITY OF FOURIER SERIES	2004	Włodzimierz Łenski Bogdan Roszak
+ PDF Chat	On the rate of strong summability of double Fourier series	1998	Włodzimierz Łenski Maria Topolewska
+	On the rate of strong summability of Fourier-Chebyshev series	1995	Włodzimierz Łenski Maria Topolewska
+	On the Strong Approximation by (<i>C</i>, α)‐Means of Fourier Series	1990	Włodzimierz Łenski
+	On the Strong Logarithmic Summabilities of Fourier Series	1985	Włodzimierz Łenski
+	On the Approximation by the Generalized de la Vallée Poussin Means of Fourier Series in the SpacesWrHα	1985	Ryszard Gajewski Włodzimierz Łenski

Common Coauthors

Coauthor	Papers Together
Bogdan Szal	61
Radosława Kranz	7
Xhevat Z. Krasniqi	4
Bogdan Roszak	3
Maria Topolewska	2
Maciej Kubiak	2
Ryszard Gajewski	1
Vishnu Narayan Mishra	1
R. N. Mohapatra	1
Mateusz Kubiak	1
Boogdan Szal	1
U. P. Singh	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+	On the degree of approximation of continuous functions	2004	László Leindler	15
+	Integrability conditions pertaining to orlicz space	2007	Л. Леиндлер	14
+	A note on the uniform convergence and boundedness of a generalized class of sine series	2008	Bogdan Szal	12
+	Pointwise strong and very strong approximation of Fourier series	2007	Włodzimierz Łenski	10
+ PDF Chat	On L-convergence of trigonometric series	2010	Bogdan Szal	10
+ PDF Chat	A new class of numerical sequences and its applications to uniform convergence of sine series	2011	Bogdan Szal	9
+	Best approximation and moduli of smoothness: Computation and equivalence theorems	2008	Sergey Tikhonov	9
+	Notes on Fourier series: Strong approximation	1985	Вилмос Тотик	8
+ PDF Chat	Almost Periodic Functions	1933	A. S. Besicovitch	8
+	On the uniform convergence of trigonometric series	2007	Sergey Tikhonov	8
+	Trigonometric series with general monotone coefficients	2006	Sergey Tikhonov	8
+	Approximation of functions belonging to the generalized Lipschitz Class by C1·Np summability method of fourier series	2008	Shyam Lal	7
+ PDF Chat	On uniform convergence of trigonometric series	1944	Otto Szász	7
+	A NEW EXTENSION OF MONOTONE SEQUENCES AND ITS APPLICATIONS	2006	László Leindler	6
+	None	2001	Л. Леиндлер	6
+ PDF Chat	Approximation of signals (functions) belonging to the weighted <i>W</i>(<i>L</i><sub><i>p</i></sub>, <i>ξ</i>(<i>t</i>))‐class by linear operators	2006	M. L. Mittal Β. E. Rhoades Vishnu Narayan Mishra	5
+ PDF Chat	Slight extensions of some theorems on the rate of pointwise approximation of functions from some subclasses of <i>L<sup>p</sup></i>	2013	Xhevat Z. Krasniqi	5
+	Sur la Sommabilité Forte de Séries de Fourier	1939	J. Marcinkiewicz	5
+	Approximation of continuous functions by T-means of Fourier series	1990	S. M. Mazhar Вилмос Тотик	4
+	A concept of general monotonicity and applications	2011	Elijah Liflyand Sergey Tikhonov	4
+	On the Convergence and Summability of Power Series on the Circle of Convergence (II)	1942	A. Zygmund	4
+	A note on the degree of approximation of continuous functions	1993	Prem Chandra	4
+	Strong approximation by Fourier series	1986	Л. Леиндлер	4
+	Almost everywhere convergence of dyadic partial sums of Fourier series for almost periodic functions	2009	Andrew D. Bailey	4
+	ON STRONG SUMMABILITY ALMOST EVERYWHERE	1989	Л. Гоголадзе	3
+	On the degree of approximation of continuous functions by means of Fourier series	2012	Wei Bao-rong Dansheng Yu	3
+	Zur Konvergenz der Fourierreihen hölderstetiger Funktionen	1975	Siegfried Prößdorf	3
+ PDF Chat	Degree of approximation of the conjugate of signals (functions) belonging to Lip ( α , r ) -class by ( C , 1 ) ( E , q ) means of conjugate trigonometric Fourier series	2012	Smita Sonker U. P. Singh	3
+	The Hausdorff-Young theorem for almost periodic functions and some applications	1995	Antonio Avantaggiati Giordano Bruno R. Iannacci	3
+ PDF Chat	The strong summability of Fourier series	1935	G. Hardy J. E. Littlewood	3
+	BMO-strong means of Fourier series	1989	V. A. Rodin	3
+	Points of strong summability of Fourier series	1992	O. D. Gabisoniya	3
+	Trigonometric approximation of functions in Lp-norm	2002	Prem Chandra	3
+	On the Strong Approximation by (<i>C</i>, α)‐Means of Fourier Series	1990	Włodzimierz Łenski	3
+ PDF Chat	Degree of approximation of conjugate of a function belonging to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$\mathrm{Lip}(\xi(t),p)$"><mml:mtext>Lip</mml:mtext><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mi>ξ</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>t</mml:mi><mml:mo>)</mml:mo></mml:mrow><mml:mo>,</mml:mo><mml:mi>p</mml:mi></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:math>class by matrix summability means of conjugate Fourier series	2001	Shyam Lal Hare Krishna Nigam	3
+	On the approximation of periodic functions by de la Vallée Poussin sums	1978	S. B. Stečkin	3
+	A Sufficient Condition for (F1)-Effectiveness of theC1T-Method	1998	M. L. Mittal	3
+ PDF Chat	On trigonometric approximation of functions in the L<sup>q</sup> norm	2018	R. N. Mohapatra Bogdan Szal	3
+ PDF Chat	On the degree of approximation of conjugate of a function belonging to weighted $ W(L^p,\xi(t))$ class by matrix summability means of conjugate series of a Fourier series	2000	Shyam Lal	2
+	On the degree of approximation of a class of functions by means of Fourier series	1988	Prem Chandra	2
+	A relaxed estimate of the degree of approximation by Fourier series in generalized Hölder metric	2009	Л. Леиндлер	2
+	Strong approximation of almost periodic functions	2012	Włodzimierz Łenski Bogdan Szal	2
+ PDF Chat	On Pointwise Approximation of Conjugate Functions by Some Hump Matrix Means of Conjugate Fourier Series	2015	Włodzimierz Łenski Bogdan Szal	2
+	ON THE DEGREE OF STRONG APPROXIMATION OF INTEGRABLE FUNCTIONS	2007	Integrable Functions Wodzimierz Ëenski	2
+	On Deferred Cesaro Means	1932	Ralph Palmer Agnew	2
+ PDF Chat	Convergence of trigonometric series with general monotone coefficients	2007	Mikhail Ivanovich Dyachenko Sergey Tikhonov	2
+	Points of strong summability of Fourier series	1973	O. D. Gabisoniya	2
+	On the Approximation by the Generalized de la Vallée Poussin Means of Fourier Series in the SpacesWrHα	1985	Ryszard Gajewski Włodzimierz Łenski	2
+	Convex functions and Orlicz spaces	1961	M. A. Krasnosel’skii I︠a︡. B. Rutit︠s︡kiĭ Leo F. Boron	2
+	A newer class of numerical sequences and its applications to sine and cosine series	2007	Л. Леиндлер	2