Margareta Heilmann

37.

Heilmann, Margareta; Nasaireh, Fadel; Raşa, Ioan
Complements to Voronovskaja's formula
Mathematics and Computing - ICMC 2018,Band Springer Proceedings in Mathematics and Computing, Seite 127-134
ICMC 2018
Varanasi, India
January 9-11, 2018
In Debdas Ghosh, Debasis Giri, Ram N. Mohapatra, Kouichi Sakurai, Ekrem Savas and Tanmoy Som, Editor
Herausgeber: Springer
2018

DOI: 10.1007/978-981-13-2095-8

36.

Heilmann, Margareta; Raşa, Ioan
Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators
Positivity, 21 (3) :897-910
2017

DOI: 10.1007/s11117-016-0441-1

35.

Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Eigenstructure of the genuine Beta operators of Lupaş and Mühlbach
Stud. Univ. Babes-Bolyai Math., 61 (3) :383-388
2016

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34.

Baumann, Katharina; Heilmann, Margareta; Raşa, Ioan
Further results for k-th order Kantorovich modification of linking Baskakov type operators
Results in Mathematics, 69 (3) :297-315
2016
ISSN: 1420-9012

DOI: 10.1007/s00025-015-0511-x

33.

Aral, Ali; Gonska, Heiner; Heilmann, Margareta; Tachev, G.
Quantitative Voronovskaya-type Results for Polynomially Bounded Functions
Results in Mathematics, 70 :313-324
2016

DOI: 10.1007/s00025-016-0580-5

32.

Heilmann, Margareta
Commutativity and Spectral Properties of Genuine Baskakov-Durrmeyer Type Operators and their kth order Kantorovich Modification
Journal of Numerical Analysis and Approximation Theory, 44 (2) :166-179
2015

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31.

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, IndiaBand 143aus Springer Proceedings in Mathematics and Statistics, Seite 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
Herausgeber: Springer
2015

DOI: 10.1007/978-81-322-2485-3

30.

Heilmann, Margareta; Raşa, Ioan
On the decomposition of Bernstein operators
Numerical Functional Analysis and Optimization, 36 (1) :72-85
2015

DOI: 10.1080/01630563.2014.951772

29.

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

DOI: 10.1007/978-81-322-2485-3_18

28.

Heilmann, Margareta; Tachev, G.
Linear combinations of genuine Szász-Mirakjan-Durrmeyer operators
Advances in Applied Mathematics and Approximation - Contributions from AMAT 2012Band 41, Seite 85-106
Applied Mathematics and Approximation Theory 2012
Ankara, Turkey
May 2012
In Anastassiou, George A. and Duman, Oktay, Editor
Herausgeber: Springer Proceedings in Mathematics and Statistics
2013

DOI: 10.1007/978-1-4614-6393-1

27.

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
2012

DOI: 10.48550/arXiv.1204.2723

26.

Heilmann, Margareta; Wagner, M.
Strong converse results for Baskakov-Durrmeyer operators
Constructive Theory of Functions, Proceedings of the International Conference, Sozopol, Bulgaria, 2010, Seite 141-149
Constructive Theory of Functions
Sozopol, Bulgaria
June 2010
In G. Nikolov et al., Editor
Herausgeber: Prof. Marin Drinov Academic Publishing House
2012

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25.

Heilmann, Margareta; Wagner, M.
The genuine Bernstein-Durrmeyer operators and quasi-interpolants
Results in Mathematics, 62 (3-4) :319-335
2012

DOI: 10.1007/s00025-012-0247-9

24.

Heilmann, Margareta; Tachev, G.
Commutativity, Direct and Strong Converse Results for Phillips Operators
East Journal on Approximation, 17 (3) :299-317
2011

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23.

Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Kantorovich operators of order k
Numerical Functional Analysis and Optimization, 32 (7) :717-738
2011

DOI: 10.1080/01630563.2011.580877

22.

Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan
Asymptotic behaviour of differentiated Bernstein polynomials revisited
General Mathematics, 18 (1) :55-70
2010

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21.

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, Seite 129-140
Herausgeber: Bonner K
2010

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20.

Heilmann, Margareta; Wagner, M.
Strong converse results for Bernstein-Durrmeyer operators and their quasi-interpolants
General Mathematics, 18 (1) :45-53
2010

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19.

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

DOI: 10.1016/j.jat.2008.11.002

18.

Abel, Ulrich; Heilmann, Margareta
The complete asymptotic expansion for Bernstein-Durrmeyer operators with Jacobi weights
Mediterranean Journal of Mathematics, 1 (4) :487-499
2004

DOI: 10.1007/s00009-004-0026-2

17.

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, Seite 295-301
In B. Bojanov et al., Editor
Herausgeber: Sofia: DARBA
2003

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16.

Heilmann, Margareta
Eigenfunctions of Durrmeyer-type modifications of Meyer-König and Zeller operators
Journal of Approximation Theory, 125 (1) :63-73
2003

DOI: 10.1016/j.jat.2003.09.006

15.

Heilmann, Margareta
Rodriguez-type representation for the eigenfunctions of Durrmeyer-type operators
Results in Mathematics, 44 (1-2) :97-105
2003

DOI: 10.1007/BF03322916

14.

Heilmann, Margareta
Explicit Voronovskaja-type results for linear combinations of BDT-operators
Approximation Theory and its Applications, 11 (1) :54-61
1995

DOI: 10.1007/BF02836445

13.

Heilmann, Margareta
Saturation of linear combinations of Baskakov-Durrmeyer-type operators
Applicable Analysis, 59 (1-4) :93-107
1995

DOI: 10.1080/00036819508840392