- 2015
30.
Heilmann, Margareta; Raşa, Ioan
k-th order Kantorovich type modification of linking Baskakov type operators
Mathematical Analysis and its Applications - Proceedings of the Conference ICRTMAA 2014, Roorkee, IndiaVolume 143from Springer Proceedings in Mathematics and Statistics, Page 229-242
International Conference on Recent Trends in Mathematical Analysis and its Applications
Roorkee, India
December 2014
In Agrawal, P.N. and Mohapatra, R.N. and Singh, U. and Srivastava, H.M., Editor
Publisher: Springer
201529.
Heilmann, Margareta; Raşa, Ioan
On the decomposition of Bernstein operators
Numerical Functional Analysis and Optimization, 36 (1) :72-85
2015- 2014
28.
Heilmann, Margareta; Raşa, Ioan
k-th order Kantorovich type modification of the operators U_n^ρ
Journal of Applied Functional Analysis, 9 (3-4) :20-334
2014- 2013
27.
Heilmann, Margareta; Tachev, G.
Linear combinations of genuine Szász-Mirakjan-Durrmeyer operators
Advances in Applied Mathematics and Approximation - Contributions from AMAT 2012Volume 41, Page 85-106
Applied Mathematics and Approximation Theory 2012
Ankara, Turkey
May 2012
In Anastassiou, George A. and Duman, Oktay, Editor
Publisher: Springer Proceedings in Mathematics and Statistics
2013- 2012
26.
Gonska, Heiner; Heilmann, Margareta; Lupaş, Alexandru; Raşa, Ioan
On the composition and decomposition of positive linear operators III: A non-trivial decomposition of the Bernstein operator
201225.
Heilmann, Margareta; Wagner, M.
Strong converse results for Baskakov-Durrmeyer operators
Constructive Theory of Functions, Proceedings of the International Conference, Sozopol, Bulgaria, 2010, Page 141-149
Constructive Theory of Functions
Sozopol, Bulgaria
June 2010
In G. Nikolov et al., Editor
Publisher: Prof. Marin Drinov Academic Publishing House
201224.
Heilmann, Margareta; Wagner, M.
The genuine Bernstein-Durrmeyer operators and quasi-interpolants
Results in Mathematics, 62 (3-4) :319-335
2012- 2011
23.
Heilmann, Margareta; Tachev, G.
Commutativity, Direct and Strong Converse Results for Phillips Operators
East Journal on Approximation, 17 (3) :299-317
201122.
Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Kantorovich operators of order k
Numerical Functional Analysis and Optimization, 32 (7) :717-738
2011- 2010
21.
Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Asymptotic behaviour of differentiated Bernstein polynomials revisited
General Mathematics, 18 (1) :55-70
201020.
Schäfer, M.; Berchtold, W.; Heilmann, Margareta; Zmudzinski, S.; Steinebach, M.
Collosion secure fingerprint watermarking for real world applications
GI-Edition - Lecture Notes in Informatics, Beiträge der 5. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft f, Page 129-140
Publisher: Bonner K
201019.
Heilmann, Margareta; Wagner, M.
Strong converse results for Bernstein-Durrmeyer operators and their quasi-interpolants
General Mathematics, 18 (1) :45-53
2010- 2009
18.
Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Convergence of iterates of genuine and ultraspherical Durrmeyer operators to the limiting semigroup: C^2-estimates
Journal Approx. Theory, 160 :243-255
2009- 2004
17.
Abel, Ulrich; Heilmann, Margareta
The complete asymptotic expansion for Bernstein-Durrmeyer operators with Jacobi weights
Mediterranean Journal of Mathematics, 1 (4) :487-499
2004- 2003
16.
Heilmann, Margareta
Rodriguez-type representation for the eigenfunctions of Durrmeyer-type operators
Results in Mathematics, 44 (1-2) :97-105
200315.
Heilmann, Margareta
Eigenfunctions of Durrmeyer-type modifications of Meyer-König and Zeller operators
Journal of Approximation Theory, 125 (1) :63-73
200314.
Heilmann, Margareta
Commutativity of Durrmeyer-type modifications of Meyer-König and Zeller and Baskakov-operators
Constructive Theory of Functions - Proceedings of the International Conference, Varna, Bulgaria, 2002, Page 295-301
In B. Bojanov et al., Editor
Publisher: Sofia: DARBA
2003- 1995
13.
Heilmann, Margareta
Explicit Voronovskaja-type results for linear combinations of BDT-operators
Approximation Theory and its Applications, 11 (1) :54-61
199512.
Heilmann, Margareta
Saturation of linear combinations of Baskakov-Durrmeyer-type operators
Applicable Analysis, 59 (1-4) :93-107
1995- 1992
11.
Heilmann, Margareta
Erhöhung der Konvergenzgeschwindigkeit bei der Approximation von Funktionen mit Hilfe von Linearkombinationen spezieller positiver linearer Operatoren
Universität Dortmund
199210.
Heilmann, Margareta
Rate of approximation of weighted derivatives by linear combinations of SMD-operators
Numerical Methods in Approximation Theory - Proceedings of the conference held in Oberwolfach Germany, November 24-30, 1991, Page 97-115
In D. Braess et al., Editor
Publisher: Birkhäuser, Basel, Int. Ser. Numer. Math. 105
1992- 1991
9.
Heilmann, Margareta; Müller, Manfred
Equivalence of a weighted modulus of smoothness and a modified weighted K-functional
In Nevai, P. and Pinkus, A., Editor
Publisher: Academic Press
1991- 1990
8.
Heilmann, Margareta; Müller, Manfred
Direct and converse results on simultaneous approximation by the method of Bernstein-Durrmeyer operators
Algorithms for approximation II, Proc. 2nd Int. Conf., Shrivenham/UK 1988, Page 107-116
1990- 1989
7.
Heilmann, Margareta
Direct and converse results for operators of Baskakov-Durrmeyer type
Approximation Theory Appl., 5 (1) :105-127
19896.
Heilmann, Margareta; Müller, Manfred
Direct and converse results on weighted simultaneous approximation by the method of operators of Baskakov-Durrmeyer type
Results in Mathematics, 16 (3-4) :228-242
1989
Last modified: 14.12.2022
