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Open AccessFeature PaperArticle
Linear Approximation Processes Based on Binomial Polynomials
by
Octavian Agratini
Octavian Agratini
Prof. Dr. Octavian Agratini is a senior researcher at Tiberiu Popoviciu Institute of Numerical and a [...]
Prof. Dr. Octavian Agratini is a senior researcher at Tiberiu Popoviciu Institute of Numerical Analysis, Romanian Academy, and Professor Emeritus at the Faculty of Mathematics and Computer Science of Babeş–Bolyai University, Cluj-Napoca, Romania. He obtained his MS in Numerical Analysis (1982) and a PhD in Mathematics (1995) from Babeş–Bolyai University. Prof. Agratini’s research interests include positive operators, semigroups of operators, Korovkin-type approximation theory, and positive approximation processes. Additionally, he is a member of the American Mathematical Society.
*,†
and
Maria Crăciun
Maria Crăciun
Dr. Maria Crăciun is a senior researcher at the Tiberiu Popoviciu Institute of
Numerical Analysis, [...]
Dr. Maria Crăciun is a senior researcher at the Tiberiu Popoviciu Institute of
Numerical Analysis, Romanian Academy, Cluj-Napoca, Romania. She completed her
Master's degree in Numerical Analysis from Babeş-Bolyai University,
Cluj-Napoca, Romania, in 1997, and obtained a PhD in Mathematical Analysis
from the same university in 2005. Dr. Crăciun’s research interests include
Automatic trend estimation, time series theory, and quantitative finance,
numerical analysis, approximation of functions by means of linear and
positive operators, and umbral calculus.
†
Tiberiu Popoviciu Institute of Numerical Analysis, Romanian Academy, 57 Fântânele Street, 400320 Cluj-Napoca, Romania
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Mathematics 2025, 13(15), 2413; https://doi.org/10.3390/math13152413 (registering DOI)
Submission received: 11 June 2025
/
Revised: 22 July 2025
/
Accepted: 24 July 2025
/
Published: 27 July 2025
Abstract
The purpose of the article is to highlight the role of binomial polynomials in the construction of classes of positive linear approximation sequences on Banach spaces. Our results aim to introduce and study an integral extension in Kantorovich sense of these binomial operators, which are useful in approximating signals in spaces, . Also, inspired by the coincidence index that appears in the definition of entropy, a general class of discrete operators related to the squared fundamental basis functions is under study. The fundamental tools used in error evaluation are the smoothness moduli and Peetre’s K-functionals. In a distinct section, numerical applications are presented and analyzed.
Share and Cite
MDPI and ACS Style
Agratini, O.; Crăciun, M.
Linear Approximation Processes Based on Binomial Polynomials. Mathematics 2025, 13, 2413.
https://doi.org/10.3390/math13152413
AMA Style
Agratini O, Crăciun M.
Linear Approximation Processes Based on Binomial Polynomials. Mathematics. 2025; 13(15):2413.
https://doi.org/10.3390/math13152413
Chicago/Turabian Style
Agratini, Octavian, and Maria Crăciun.
2025. "Linear Approximation Processes Based on Binomial Polynomials" Mathematics 13, no. 15: 2413.
https://doi.org/10.3390/math13152413
APA Style
Agratini, O., & Crăciun, M.
(2025). Linear Approximation Processes Based on Binomial Polynomials. Mathematics, 13(15), 2413.
https://doi.org/10.3390/math13152413
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