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Author ID: tachev.gancho-t Recent zbMATH articles by "Tachev, Gancho T."
Published as: Tachev, Gancho; Tachev, Gancho T.; Tachev, G. T.; Tachev, G.; Tachev, Ganchov T.
Homepage: http://uacg.bg/?p=109&id=361&l=2
Documents Indexed: 67 Publications since 1989, including 1 Book
Co-Authors: 13 Co-Authors with 28 Joint Publications
415 Co-Co-Authors
all top 5

Serials

5 Results in Mathematics
4 Godishnik na Visshiya Institut po Arkhitektura i Stroitelstvo Sofiya. Svitk II. Matematika
3 Journal of Mathematical Analysis and Applications
3 Mathematica Balkanica. New Series
3 Mediterranean Journal of Mathematics
2 Numerical Functional Analysis and Optimization
2 Numerical Algorithms
2 Studia Universitatis Babeș-Bolyai. Mathematica
2 East Journal on Approximations
2 Godishnik na Universiteta po Arkhitektura, Stroitelstvo i Geodeziya Sofiya. Svitk II. Matematika, Mekhanika
2 Journal of Classical Analysis
1 Bulletin of the Australian Mathematical Society
1 Computers & Mathematics with Applications
1 Calcolo
1 Demonstratio Mathematica
1 Journal of Approximation Theory
1 Matematički Vesnik
1 Mathematische Nachrichten
1 Mathematica Slovaca
1 Approximation Theory and its Applications
1 Applied Mathematics Letters
1 Serdica
1 Revue d’Analyse Numérique et de Théorie de l’Approximation
1 General Mathematics
1 Georgian Mathematical Journal
1 Filomat
1 Boletín de la Sociedad Matemática Mexicana. Third Series
1 Mathematical Inequalities & Applications
1 Journal of Computational Analysis and Applications
1 JIPAM. Journal of Inequalities in Pure & Applied Mathematics
1 Kragujevac Journal of Mathematics
1 Journal of Concrete and Applicable Mathematics
1 International Journal of Applied Mathematics and Statistics
1 Journal of Applied Functional Analysis
1 Developments in Mathematics
1 Theory and Applications of Mathematics & Computer Science
1 Mathematical Foundations of Computing
1 Constructive Mathematical Analysis

Publications by Year

Citations contained in zbMATH Open

44 Publications have been cited 291 times in 200 Documents Cited by Year
Approximation with positive linear operators and linear combinations. Zbl 1371.41035
Gupta, Vijay; Tachev, Gancho
49
2017
The complete asymptotic expansion for Bernstein operators. Zbl 1232.41016
Tachev, Gancho T.
23
2012
Grüss-type inequalities for positive linear operators with second order moduli. Zbl 1289.41036
Gonska, Heiner; Tachev, Gancho
22
2011
On approximation properties of Phillips operators preserving exponential functions. Zbl 1375.41015
Gupta, Vijay; Tachev, Gancho
18
2017
Modified Kantorovich operators with better approximation properties. Zbl 1508.41005
Gupta, Vijay; Tachev, Gancho; Acu, Ana-Maria
17
2019
Commutativity, direct and strong converse results for Philipps operators. Zbl 1269.41005
Heilmann, Margareta; Tachev, Gancho
13
2011
General form of Voronovskaja’s theorem in terms of weighted modulus of continuity. Zbl 1339.41032
Gupta, Vijay; Tachev, Gancho
11
2016
A note on the differences of two positive linear operators. Zbl 1463.41026
Gupta, Vijay; Tachev, Gancho
10
2019
On variation-diminishing Schoenberg operators: new quantitative statements. Zbl 1113.41014
Beutel, Laura; Gonska, Heiner; Kacsó, Daniela; Tachev, Gancho
10
2002
Voronovskaja’s theorem revisited. Zbl 1140.41002
Tachev, Gancho T.
10
2008
Voronovskaja’s theorem for functions with exponential growth. Zbl 1452.41011
Tachev, Gancho; Gupta, Vijay; Aral, Ali
8
2020
Better numerical approximation by Durrmeyer type operators. Zbl 1423.41029
Acu, Ana-Maria; Gupta, Vijay; Tachev, Gancho
8
2019
General estimates for the Ditzian-Totik modulus. Zbl 1111.41004
Gavrea, Ioan; Gonska, Heiner; Păltănea, Radu; Tachev, Gancho
8
2003
Variation-diminishing splines revisited. Zbl 1071.41010
Beutel, L.; Gonska, H.; Kacsó, D.; Tachev, G.
7
2002
Pointwise approximation by Bernstein polynomials. Zbl 1251.41002
Tachev, Gancho
6
2012
Quantitative Voronovskaya-type results for polynomially bounded functions. Zbl 1351.41011
Aral, Ali; Gonska, Heiner; Heilmann, Margareta; Tachev, Gancho
5
2016
Approximation by Szász-Mirakyan-Baskakov operators. Zbl 1358.41014
Gupta, Vijay; Tachev, Gancho
5
2014
New estimates in Voronovskaja’s theorem. Zbl 1251.41006
Tachev, Gancho
5
2012
A quantitative variant of Voronovskaja’s theorem. Zbl 1181.41026
Gonska, Heiner; Tachev, Gancho
5
2009
Approximation by linear combinations of complex Phillips operators in compact disks. Zbl 1300.41011
Gupta, Vijay; Tachev, Gancho
4
2014
Approximation of bounded continuous functions by linear combinations of Phillips operators. Zbl 1298.41041
Tachev, Gancho
4
2014
A converse theorem for the best algebraic approximation in \(L_ p[-1,1] (0<p<1)\). Zbl 0772.41028
Tachev, Gancho T.
3
1991
Piecewise linear interpolation with nonequidistant nodes. Zbl 0972.41007
Tachev, Gancho T.
3
2000
The rate of approximation by rational Bernstein functions in terms of second order moduli of continuity. Zbl 1244.41002
Tachev, Gancho T.
3
2012
On multiplicativity of the Bernstein operator. Zbl 1232.41005
Tachev, Gancho
3
2011
Some results on Post-Widder operators preserving test function \(x^r\). Zbl 1499.41065
Gupta, Vijay; Tachev, Gancho
3
2022
Pointwise estimate for linear combinations of Phillips operators. Zbl 1424.41047
Tachev, Gancho
2
2016
On the second moments of variation-diminishing splines. Zbl 1098.41007
Beutel, Laura; Gonska, Heiner; Kacsó, Daniela; Tachev, Gancho
2
2004
A global inverse theorem for combinations of Phillips operators. Zbl 1357.41006
Tachev, Gancho
2
2016
Simultaneous approximation by Bernstein operators in Hölder norms. Zbl 1268.41011
Gonska, Heiner; Prestin, Jürgen; Tachev, Gancho; Zhou, Ding-Xuan
2
2013
On the multiplicativity of linear operators. Zbl 1310.41020
Gavrea, Ioan; Tachev, Gancho
2
2013
Improved approximation on Durrmeyer-type operators. Zbl 1416.41027
Gupta, Vijay; Soybaş, Danyal; Tachev, Gancho
2
2019
The second Ditzian-Totik modulus revisited: Refined estimates for positive linear operators. Zbl 1084.41503
Gonska, Heinz H.; Tachev, Gancho T.
2
2003
A new estimate for Hölder approximation by Bernstein operators. Zbl 1253.41019
Gonska, H.; Prestin, J.; Tachev, G.
2
2013
On two modified Phillips operators. Zbl 1513.41037
Tachev, Gancho
2
2019
Quantitative Voronovskaya type theorems for a general sequence of linear positive operators. Zbl 1499.41048
Aral, Ali; Tachev, Gancho
2
2019
From Bernstein polynomials to Lagrange interpolation. Zbl 1424.41009
Tachev, Gancho
1
2011
A direct theorem for the best algebraic approximation in \(L_ p [-1,1], (0<p<1)\). Zbl 0822.41022
Tachev, Gancho T.
1
1990
A counterexample to the conjecture of W. Filippow and P. Oswald. Zbl 0876.42018
Tachev, G. T.
1
1994
On the constants in \(\omega_2^\varphi\)-inequalities. Zbl 1111.41015
Gonska, Heinz H.; Tachev, Gancho T.
1
2002
The lower estimate for Bernstein operator. Zbl 1318.41005
Gal, Sorin G.; Tachev, Ganchov T.
1
2013
Approximation of a continuous curve by its Bernstein-Bézier operator. Zbl 1231.65036
Tachev, Gancho T.
1
2011
Approximation by rational spline functions. Zbl 1121.41009
Tachev, Gancho T.
1
2006
Voronovskaja’s theorem for Schoenberg operator. Zbl 1236.41010
Tachev, Gancho
1
2012
Some results on Post-Widder operators preserving test function \(x^r\). Zbl 1499.41065
Gupta, Vijay; Tachev, Gancho
3
2022
Voronovskaja’s theorem for functions with exponential growth. Zbl 1452.41011
Tachev, Gancho; Gupta, Vijay; Aral, Ali
8
2020
Modified Kantorovich operators with better approximation properties. Zbl 1508.41005
Gupta, Vijay; Tachev, Gancho; Acu, Ana-Maria
17
2019
A note on the differences of two positive linear operators. Zbl 1463.41026
Gupta, Vijay; Tachev, Gancho
10
2019
Better numerical approximation by Durrmeyer type operators. Zbl 1423.41029
Acu, Ana-Maria; Gupta, Vijay; Tachev, Gancho
8
2019
Improved approximation on Durrmeyer-type operators. Zbl 1416.41027
Gupta, Vijay; Soybaş, Danyal; Tachev, Gancho
2
2019
On two modified Phillips operators. Zbl 1513.41037
Tachev, Gancho
2
2019
Quantitative Voronovskaya type theorems for a general sequence of linear positive operators. Zbl 1499.41048
Aral, Ali; Tachev, Gancho
2
2019
Approximation with positive linear operators and linear combinations. Zbl 1371.41035
Gupta, Vijay; Tachev, Gancho
49
2017
On approximation properties of Phillips operators preserving exponential functions. Zbl 1375.41015
Gupta, Vijay; Tachev, Gancho
18
2017
General form of Voronovskaja’s theorem in terms of weighted modulus of continuity. Zbl 1339.41032
Gupta, Vijay; Tachev, Gancho
11
2016
Quantitative Voronovskaya-type results for polynomially bounded functions. Zbl 1351.41011
Aral, Ali; Gonska, Heiner; Heilmann, Margareta; Tachev, Gancho
5
2016
Pointwise estimate for linear combinations of Phillips operators. Zbl 1424.41047
Tachev, Gancho
2
2016
A global inverse theorem for combinations of Phillips operators. Zbl 1357.41006
Tachev, Gancho
2
2016
Approximation by Szász-Mirakyan-Baskakov operators. Zbl 1358.41014
Gupta, Vijay; Tachev, Gancho
5
2014
Approximation by linear combinations of complex Phillips operators in compact disks. Zbl 1300.41011
Gupta, Vijay; Tachev, Gancho
4
2014
Approximation of bounded continuous functions by linear combinations of Phillips operators. Zbl 1298.41041
Tachev, Gancho
4
2014
Simultaneous approximation by Bernstein operators in Hölder norms. Zbl 1268.41011
Gonska, Heiner; Prestin, Jürgen; Tachev, Gancho; Zhou, Ding-Xuan
2
2013
On the multiplicativity of linear operators. Zbl 1310.41020
Gavrea, Ioan; Tachev, Gancho
2
2013
A new estimate for Hölder approximation by Bernstein operators. Zbl 1253.41019
Gonska, H.; Prestin, J.; Tachev, G.
2
2013
The lower estimate for Bernstein operator. Zbl 1318.41005
Gal, Sorin G.; Tachev, Ganchov T.
1
2013
The complete asymptotic expansion for Bernstein operators. Zbl 1232.41016
Tachev, Gancho T.
23
2012
Pointwise approximation by Bernstein polynomials. Zbl 1251.41002
Tachev, Gancho
6
2012
New estimates in Voronovskaja’s theorem. Zbl 1251.41006
Tachev, Gancho
5
2012
The rate of approximation by rational Bernstein functions in terms of second order moduli of continuity. Zbl 1244.41002
Tachev, Gancho T.
3
2012
Voronovskaja’s theorem for Schoenberg operator. Zbl 1236.41010
Tachev, Gancho
1
2012
Grüss-type inequalities for positive linear operators with second order moduli. Zbl 1289.41036
Gonska, Heiner; Tachev, Gancho
22
2011
Commutativity, direct and strong converse results for Philipps operators. Zbl 1269.41005
Heilmann, Margareta; Tachev, Gancho
13
2011
On multiplicativity of the Bernstein operator. Zbl 1232.41005
Tachev, Gancho
3
2011
From Bernstein polynomials to Lagrange interpolation. Zbl 1424.41009
Tachev, Gancho
1
2011
Approximation of a continuous curve by its Bernstein-Bézier operator. Zbl 1231.65036
Tachev, Gancho T.
1
2011
A quantitative variant of Voronovskaja’s theorem. Zbl 1181.41026
Gonska, Heiner; Tachev, Gancho
5
2009
Voronovskaja’s theorem revisited. Zbl 1140.41002
Tachev, Gancho T.
10
2008
Approximation by rational spline functions. Zbl 1121.41009
Tachev, Gancho T.
1
2006
On the second moments of variation-diminishing splines. Zbl 1098.41007
Beutel, Laura; Gonska, Heiner; Kacsó, Daniela; Tachev, Gancho
2
2004
General estimates for the Ditzian-Totik modulus. Zbl 1111.41004
Gavrea, Ioan; Gonska, Heiner; Păltănea, Radu; Tachev, Gancho
8
2003
The second Ditzian-Totik modulus revisited: Refined estimates for positive linear operators. Zbl 1084.41503
Gonska, Heinz H.; Tachev, Gancho T.
2
2003
On variation-diminishing Schoenberg operators: new quantitative statements. Zbl 1113.41014
Beutel, Laura; Gonska, Heiner; Kacsó, Daniela; Tachev, Gancho
10
2002
Variation-diminishing splines revisited. Zbl 1071.41010
Beutel, L.; Gonska, H.; Kacsó, D.; Tachev, G.
7
2002
On the constants in \(\omega_2^\varphi\)-inequalities. Zbl 1111.41015
Gonska, Heinz H.; Tachev, Gancho T.
1
2002
Piecewise linear interpolation with nonequidistant nodes. Zbl 0972.41007
Tachev, Gancho T.
3
2000
A counterexample to the conjecture of W. Filippow and P. Oswald. Zbl 0876.42018
Tachev, G. T.
1
1994
A converse theorem for the best algebraic approximation in \(L_ p[-1,1] (0<p<1)\). Zbl 0772.41028
Tachev, Gancho T.
3
1991
A direct theorem for the best algebraic approximation in \(L_ p [-1,1], (0<p<1)\). Zbl 0822.41022
Tachev, Gancho T.
1
1990
all top 5

Cited by 171 Authors

38 Gupta, Vijay
20 Acu, Ana Maria
20 Tachev, Gancho T.
14 Aral, Ali
11 Rasa, Ioan
9 Agrawal, Purshottam Narain
8 Acar, Tuncer
7 Gavrea, Ioan
7 Păltănea, Radu
6 Adell, José Antonio
6 Çetin, Nursel
6 Ivan, Mircea Dumitru
6 Kajla, Arun
5 Cárdenas-Morales, Daniel
4 Deo, Naokant
4 Gonska, Heinz Herbert
4 Malik, Neha
4 Mishra, Vishnu Narayan
4 Radu, Voichiţa Adriana
4 Soybaş, Danyal
4 Xiang, Jim X.
3 Bajpeyi, Shivam
3 Bascanbaz-Tunca, Gulen
3 Bustamante González, Jorge
3 Draganov, Borislav R.
3 Finta, Zoltán
3 Heilmann, Margareta
3 Holhoş, Adrian
3 Manav, Nesibe
3 Uysal, Gumrah
3 Xie, Linsen
3 Yilmaz, Başar
2 Abel, Ulrich
2 Agratini, Octavian
2 Agrawal, Deepika
2 Agrawal, Gunjan
2 Amato, Umberto
2 Anjali
2 Baxhaku, Behar
2 Behiry, S. H.
2 Bodur, Murat
2 Cai, Qingbo
2 Chauhan, Ruchi
2 Della Vecchia, Biancamaria
2 Deshwal, Sheetal
2 Dinlemez Kantar, Ülkü
2 Erbay, Hasan
2 Erençin, Ayşegül
2 Gairola, Asha Ram
2 Greubel, G. C.
2 Kopotun, Kirill A.
2 Kumar, Angamuthu Sathish
2 López-Borbón, Joaquín
2 Mantellini, Ilaria
2 Moldovan, Camelia Liliana
2 Ozarslan, Mehmet Ali
2 Pratap, Ram
2 Singh, Amrita
2 Srivastava, Hari Mohan
2 Vega-Amaya, Oscar
2 Wang, Shuli
2 Yadav, Rishikesh
2 Yilmaz, Övgü Gürel
1 Ada, Gülsüm Ulusoy
1 Alghamdi, Mohammed Ali
1 Alotaibi, Abdullah M.
1 Amirfakhrian, Majid
1 Angamuthu, Sathish Kumar
1 Ari, Didem Aydin
1 Bardaro, Carlo
1 Beniwal, Man Singh
1 Bhatnagar, Dhruv
1 Bhatt, Dhawal J.
1 Bogdanov, Vladimir Vasil’evich
1 Bouhiri, Salah
1 Çekım, Bayram
1 Cerejeiras, Paula
1 Chowdhury, Shuvro
1 Dehghan Takht Fooladi, Mehdi
1 Dikmen, Akif Barbaros
1 Ditzian, Zeev
1 Du, Hong
1 Eslahchi, Mohammad Reza
1 Ezzati, Reza
1 Falahhesar, S. S.
1 Flores-de-Jesús, Lázaro
1 Forster-Heinlein, Brigitte
1 Gadjev, Ivan
1 Gal, Sorin Gheorghe
1 Gao, Qinjiao
1 Garg, Tarul
1 Garrancho, Pedro
1 Goyal, Meenu
1 Gupta, Ruchi
1 Hesameddini, Esmail
1 Hoseini, Seyede Fatemeh
1 İnce İlarslan, Hatice Gül
1 Ivanov, Kamen G.
1 Jana, Ranjan Kumar
1 Kajla, Neha
...and 71 more Authors
all top 5

Cited in 69 Serials

18 Results in Mathematics
11 Mathematical Foundations of Computing
10 Journal of Mathematical Analysis and Applications
10 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM
8 Numerical Functional Analysis and Optimization
8 Mediterranean Journal of Mathematics
8 Constructive Mathematical Analysis
7 Filomat
6 Applied Mathematics and Computation
6 Journal of Approximation Theory
6 Positivity
6 Journal of Inequalities and Applications
5 Numerical Algorithms
5 Georgian Mathematical Journal
4 Rendiconti del Circolo Matemàtico di Palermo. Serie II
4 Journal of Mathematical Inequalities
4 Analysis and Mathematical Physics
3 Journal of Computational and Applied Mathematics
3 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
3 Annals of Functional Analysis
3 Journal of Function Spaces
2 Mathematical Methods in the Applied Sciences
2 Rocky Mountain Journal of Mathematics
2 Publications de l’Institut Mathématique. Nouvelle Série
2 Acta Mathematica Hungarica
2 Constructive Approximation
2 Facta Universitatis. Series Mathematics and Informatics
2 Turkish Journal of Mathematics
2 Boletín de la Sociedad Matemática Mexicana. Third Series
2 Kragujevac Journal of Mathematics
2 Journal of Classical Analysis
1 Periodica Mathematica Hungarica
1 Calcolo
1 Demonstratio Mathematica
1 Kybernetika
1 Kyungpook Mathematical Journal
1 Matematički Vesnik
1 Mathematics and Computers in Simulation
1 Mathematische Nachrichten
1 Siberian Mathematical Journal
1 Bulletin of the Iranian Mathematical Society
1 Journal of Complexity
1 International Journal of Computer Mathematics
1 Indagationes Mathematicae. New Series
1 The Journal of Analysis
1 Applied Mathematics. Series B (English Edition)
1 Computational and Applied Mathematics
1 ETNA. Electronic Transactions on Numerical Analysis
1 The Journal of Fourier Analysis and Applications
1 Abstract and Applied Analysis
1 Sibirskiĭ Zhurnal Vychislitel’noĭ Matematiki
1 Communications de la Faculté des Sciences de l’Université d’Ankara. Séries A1. Mathematics and Statistics
1 Journal of the Korean Society of Mathematical Education. Series B. The Pure and Applied Mathematics
1 Proceedings of the National Academy of Sciences, India. Section A. Physical Sciences
1 Hacettepe Journal of Mathematics and Statistics
1 Thai Journal of Mathematics
1 International Journal of Wavelets, Multiresolution and Information Processing
1 Advances in Difference Equations
1 Operators and Matrices
1 European Journal of Pure and Applied Mathematics
1 Banach Journal of Mathematical Analysis
1 Journal of Nonlinear Science and Applications
1 Acta Universitatis Sapientiae. Mathematica
1 Advances in Numerical Analysis
1 Journal of Dynamics and Games
1 Journal of Mathematics
1 Discontinuity, Nonlinearity, and Complexity
1 Khayyam Journal of Mathematics
1 Advances in Operator Theory

Citations by Year