Edit Profile (opens in new tab) Rasa, Ioan Co-Author Distance Author ID: rasa.ioan Published as: Raşa, Ioan; Rasa, Ioan; Raşa, I.; Rasa, I.; Rasa, Ion; Raşa, Ion; Raṣa, I. more...less Homepage: http://users.utcluj.ro/~rasai/ External Links: MGP · ORCID · Google Scholar · ResearchGate Documents Indexed: 249 Publications since 1975, including 2 Books 1 Contribution as Editor Reviewing Activity: 529 Reviews Co-Authors: 67 Co-Authors with 186 Joint Publications 1,041 Co-Co-Authors all top 5 Co-Authors 63 single-authored 30 Acu, Ana Maria 29 Gonska, Heinz Herbert 23 Heilmann, Margareta 20 Popa, Dorian 14 Altomare, Francesco 13 Aral, Ali 10 Pečarić, Josip 8 Inoan, Daniela Ioana 7 Campiti, Michele 7 Leonessa, Vita 6 Acar, Tuncer 6 Attalienti, Antonio 6 Mocanu, Gabriela Raluca 5 Abel, Ulrich 5 Cappelletti Montano, Mirella 5 Nasaireh, Fadel 5 Stănilă, Elena-Dorina 5 Toader, Gheorghe 4 Bărar, Adina Elena 4 Cárdenas-Morales, Daniel 4 Ciurte, Anca 4 Garrancho, Pedro 4 Nedevschi, Sergiu 4 Piţul, Paula Anamaria 4 Rusu, Maria-Daniela 3 Bascanbaz-Tunca, Gulen 3 Kacsó, Daniela P. 3 Leviatan, Dany 3 Pugna, Georgiana 3 Vladislav, Tiberiu 2 Adell, José Antonio 2 Andrica, Dorin 2 Brzdęk, Janusz 2 Dancs, Madalina 2 Gavrea, Ioan 2 Hodiş, Sever 2 Ivan, Mircea Dumitru 2 Mesaroş, Laura 2 Paşca, Vlad 2 Sándor, József 2 Seserman, Andra 2 Tacelli, Cristian 1 Alzer, Horst 1 Baias, Alina-Ramona 1 Bardaro, Carlo 1 Baumann, Katharina 1 Blaga, Florina 1 Buscu, Ioan Cristian 1 Câmpian, Vasile 1 de la Cal, Jesús 1 De Marchi, Stefano 1 Della Vecchia, Biancamaria 1 Erençin, Ayşegül 1 Hodis, Laura 1 Ivan, Dumitru Mircea 1 Kwong, Man Kam 1 Labsker, L. G. 1 Mache, Detlef-Hauke 1 Măduţa, Alexandra-Ioana 1 Mangino, Elisabetta M. 1 Mastroianni, Giuseppe 1 Otrocol, Diana 1 Özsaraç, Fırat 1 Stens, Rudolf L. 1 Vinti, Gianluca 1 Viorel, Adrian 1 Xu, Bing all top 5 Serials 24 Mathématica – Revue d’Analyse Numérique et de Théorie de l’Approximation. L’Analyse Numérique et la Théorie de l’Approximation 15 Results in Mathematics 11 Revue d’Analyse Numérique et de Théorie de l’Approximation 11 Mediterranean Journal of Mathematics 10 Studia Universitatis Babeș-Bolyai. Mathematica 9 Positivity 8 Carpathian Journal of Mathematics 6 Applied Mathematics and Computation 6 Numerical Functional Analysis and Optimization 6 General Mathematics 6 Annals of the Tiberiu Popoviciu Seminar of Functional Equations, Approximation and Convexity 5 Journal of Mathematical Analysis and Applications 5 Journal of Approximation Theory 5 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 5 Analysis and Mathematical Physics 4 Acta Mathematica Hungarica 4 Numerical Algorithms 4 Preprint. “Babeș-Bolyai” University. Faculty of Mathematics and Physics. Research Seminars 3 Mathematical Inequalities & Applications 3 Journal of Function Spaces 3 Constructive Mathematical Analysis 2 Periodica Mathematica Hungarica 2 Acta Scientiarum Mathematicarum 2 Studia Scientiarum Mathematicarum Hungarica 2 Aequationes Mathematicae 2 Atti del Seminario Matematico e Fisico dell’Università di Modena 2 Journal of Computational Analysis and Applications 2 Journal of Applied Functional Analysis 2 Applicable Analysis and Discrete Mathematics 2 Banach Journal of Mathematical Analysis 2 Jaen Journal on Approximation 1 Applicable Analysis 1 Computers & Mathematics with Applications 1 Ukrainian Mathematical Journal 1 Annales Universitatis Mariae Curie-Skłodowska. Sectio A. Mathematica 1 Archiv der Mathematik 1 Calcolo 1 Conferenze del Seminario di Matematica dell’Università di Bari 1 Czechoslovak Mathematical Journal 1 Journal of Functional Analysis 1 Matematički Vesnik 1 Mathématica – Revue d’Analyse Numérique et de Théorie de l’Approximation. Mathématica 1 Mathematica Slovaca 1 Publications de l’Institut Mathématique. Nouvelle Série 1 Rendiconti del Circolo Matemàtico di Palermo. Serie II 1 Siberian Mathematical Journal 1 Southeast Asian Bulletin of Mathematics 1 Buletinul Științific al Institutului Politehnic Cluj-Napoca. Seria: Electrotehnica-Energetica-Informatica 1 Zeitschrift für Analysis und ihre Anwendungen 1 Approximation Theory and its Applications 1 Buletinul Științific al Institutului Politehnic Cluj-Napoca. Seria: Matematică, Mecanică Aplicată. Construcții de Mașini 1 Applied Mathematics Letters 1 Mathematica Balkanica. New Series 1 Expositiones Mathematicae 1 Nieuw Archief voor Wiskunde. Vierde Serie 1 Filomat 1 Buletinul Academiei de Științe a Republicii Moldova. Matematica 1 Automation, Computers, Applied Mathematics 1 The Ramanujan Journal 1 Abstract and Applied Analysis 1 Taiwanese Journal of Mathematics 1 Journal of Inequalities and Applications 1 JIPAM. Journal of Inequalities in Pure & Applied Mathematics 1 Mathematical Modelling and Analysis 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Journal of Applied Mathematics and Computing 1 Fixed Point Theory 1 Miskolc Mathematical Notes 1 Preprint. “Babeș-Bolyai” University. Faculty of Mathematics. Research Seminars 1 De Gruyter Studies in Mathematics 1 Journal of Fixed Point Theory and Applications 1 Journal of Mathematical Inequalities 1 Bollettino dell’Unione Matematica Italiana. Series IX 1 Annals of Functional Analysis 1 Journal of Numerical Analysis and Approximation Theory 1 Advances in the Theory of Nonlinear Analysis and its Applications 1 Mathematical Analysis and its Applications 1 Mathematical Foundations of Computing all top 5 Fields 168 Approximations and expansions (41-XX) 53 Operator theory (47-XX) 49 Real functions (26-XX) 23 Functional analysis (46-XX) 16 Difference and functional equations (39-XX) 15 Probability theory and stochastic processes (60-XX) 13 Numerical analysis (65-XX) 11 Partial differential equations (35-XX) 9 Information and communication theory, circuits (94-XX) 7 Ordinary differential equations (34-XX) 6 Special functions (33-XX) 6 Dynamical systems and ergodic theory (37-XX) 3 Linear and multilinear algebra; matrix theory (15-XX) 3 Measure and integration (28-XX) 2 Combinatorics (05-XX) 2 Biology and other natural sciences (92-XX) 1 General and overarching topics; collections (00-XX) 1 Number theory (11-XX) 1 Potential theory (31-XX) 1 Sequences, series, summability (40-XX) 1 Integral equations (45-XX) 1 Calculus of variations and optimal control; optimization (49-XX) 1 General topology (54-XX) 1 Manifolds and cell complexes (57-XX) 1 Mechanics of particles and systems (70-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 164 Publications have been cited 1,340 times in 659 Documents Cited by ▼ Year ▼ On the Hyers-Ulam stability of the linear differential equation. Zbl 1222.34069Popa, Dorian; Raşa, Ioan 86 2011 Ulam stability of operators. Zbl 1393.39001Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing 67 2018 The new forms of Voronovskaya’s theorem in weighted spaces. Zbl 1334.41015Acar, Tuncer; Aral, Ali; Rasa, Ioan 54 2016 Bernstein-type operators which preserve polynomials. Zbl 1228.41019Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 49 2011 Hyers-Ulam stability of the linear differential operator with nonconstant coefficients. Zbl 1368.34075Popa, Dorian; Raşa, Ioan 45 2012 Grüss-type and Ostrowski-type inequalities in approximation theory. Zbl 1254.41011Acu, A. M.; Gonska, H.; Raşa, I. 42 2011 Markov operators, positive semigroups and approximation processes. Zbl 1352.47001Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 40 2014 On the generalized Szász-Mirakyan operators. Zbl 1293.41009Aral, A.; Inoan, D.; Raşa, I. 39 2014 On Peano’s form of the Taylor remainder, Voronovskaja’s theorem and the commutator of positive linear operators. Zbl 1123.41012Gonska, Heiner; Piţul, Paula; Raşa, Ioan 36 2006 New estimates for the differences of positive linear operators. Zbl 1357.41018Acu, Ana Maria; Raşa, Ioan 33 2016 Kantorovich operators of order \(k\). Zbl 1236.41023Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 30 2011 General King-type operators. Zbl 1181.41041Gonska, Heiner; Piţul, Paula; Raşa, Ioan 28 2009 The limiting semigroup of the Bernstein iterates: degree of convergence. Zbl 1121.41004Gonska, H.; Raşa, I. 23 2006 Asymptotic behaviour of differentiated Bernstein polynomials. Zbl 1274.41036Gonska, Heiner; Raşa, Ioan 22 2009 On genuine Bernstein-Durrmeyer operators. Zbl 1145.41004Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 19 2006 Asymptotic formulae via a Korovkin-type result. Zbl 1241.41012Cárdenas-Morales, Daniel; Garrancho, Pedro; Raşa, Ioan 18 2012 The Fréchet functional equation with application to the stability of certain operators. Zbl 1238.39008Popa, Dorian; Raşa, Ioan 18 2012 Remarks on some quantitative Korovkin-type results. Zbl 0821.41022Gavrea, I.; Raşa, I. 16 1993 Hyers-Ulam stability with respect to gauges. Zbl 1404.34016Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan 16 2017 A generalization of Kantorovich operators for convex compact subsets. Zbl 1383.41003Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 15 2017 On the best constant in Hyers-Ulam stability of some positive linear operators. Zbl 1308.41026Popa, Dorian; Raşa, Ioan 14 2014 Entropies and Heun functions associated with positive linear operators. Zbl 1410.41039Raşa, Ioan 14 2015 The eigenstructure of operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1295.41021Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 14 2014 Chebyshev-Grüss-type inequalities via discrete oscillations. Zbl 1305.26040Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 13 2014 Lipschitz contractions, unique ergodicity and asymptotics of Markov semigroups. Zbl 1268.47013Altomare, Francesco; Raşa, Ioan 13 2012 Positive linear operators preserving \(\tau\) and \(\tau^2\). Zbl 1463.41046Acar, Tuncer; Aral, Ali; Raşa, Ioan 13 2019 Best constant in stability of some positive linear operators. Zbl 1353.39028Popa, Dorian; Raşa, Ioan 13 2016 On differences of linear positive operators. Zbl 1428.41024Aral, Ali; Inoan, Daniela; Raşa, Ioan 12 2019 A survey on estimates for the differences of positive linear operators. Zbl 1463.41047Acu, Ana Maria; Hodiş, Sever; Raşa, Ioan 12 2018 On Bernstein-Schnabl operators on the unit interval. Zbl 1140.41304Altomare, Francesco; Leonessa, Vita; Raşa, Ioan 11 2008 The genuine Bernstein-Durrmeyer operators revisited. Zbl 1253.41020Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 11 2012 On differences of positive linear operators. Zbl 1150.41012Gonska, Heiner; Piţul, Paula; Raşa, Ioan 11 2006 Elliptic differential operators and positive semigroups associated with generalized Kantorovich operators. Zbl 1460.35098Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 11 2018 On differential operators associated with Markov operators. Zbl 1285.47048Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 11 2014 On the stability of some classical operators from approximation theory. Zbl 1284.39032Popa, Dorian; Raşa, Ioan 10 2013 A quantitative version of Trotter’s approximation theorem. Zbl 1118.41007Mangino, Elisabetta M.; Raşa, Ioan 10 2007 Over-iterates of Bernstein-Stancu operators. Zbl 1150.41013Gonska, Heiner; Piţul, Paula; Raşa, Ioan 10 2007 Approximation properties of Bernstein-Durrmeyer type operators. Zbl 1410.41030Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 10 2014 \(C_0\)-semigroups and iterates of positive linear operators: asymptotic behaviour. Zbl 1470.41023Rasa, Ioan 9 2010 Asymptotic behaviour of iterates of positive linear operators. Zbl 1184.41013Rasa, Ioan 9 2009 Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators. Zbl 1375.37016Heilmann, Margareta; Raşa, Ioan 9 2017 A sharpening of a problem on Bernstein polynomials and convex functions. Zbl 1400.26031Abel, Ulrich; Raşa, Ioan 9 2018 Approximation by \(k\)-th order modifications of Szász-Mirakyan operators. Zbl 1389.41016Acar, Tuncer; Aral, Ali; Raşa, Ioan 9 2016 Inequalities for certain means in two arguments. Zbl 0938.26011Sándor, J.; Raşa, I. 9 1997 Voronovskaya type theorems in weighted spaces. Zbl 1357.41022Erençin, Ayşegül; Raşa, Ioan 9 2016 Asymptotic behaviour of differential Bernstein polynomials revisited. Zbl 1212.41057Gonska, Heiner; Heilmann, Margareta; Rasa, Ioan 8 2010 Qualitative properties of a class of Fleming–Viot operators. Zbl 1101.47028Campiti, M.; Rasa, I. 8 2004 A Nice representation for a link between Baskakov- and Szász-Mirakjan-Durrmeyer operators and their Kantorovich variants. Zbl 1404.41007Heilmann, Margareta; Raşa, Ioan 8 2019 Another look at Voronovskaja type formulas. Zbl 1391.41016Nasaireh, Fadel; Raşa, Ioan 8 2018 \(k\)th order Kantorovich type modification of the operators \(U^{\rho}_n\). Zbl 1358.41017Heilmann, Margareta; Raşa, Ioan 8 2014 Differences of positive linear operators and the second order modulus. Zbl 1249.41014Gonska, Heiner; Raşa, Ioan 8 2008 On infinite products of positive linear operators reproducing linear functions. Zbl 1271.41006Gonska, Heiner; Raşa, Ioan 7 2013 Remarks on Voronovskaya’s theorem. Zbl 1199.41028Gonska, Heiner; Raşa, Ioan 7 2008 Convexity properties of some entropies. Zbl 1448.94118Raşa, Ioan 7 2018 \(k\)th order Kantorovich modification of linking Baskakov-type operators. Zbl 1337.41010Heilmann, Margareta; Raşa, Ioan 7 2015 Further results for \(k\)th order Kantorovich modification of linking Baskakov type operators. Zbl 1339.41030Baumann, Katharina; Heilmann, Margareta; Raşa, Ioan 7 2016 On approximation by some Bernstein-Kantorovich exponential-type polynomials. Zbl 1449.41005Aral, Ali; Otrocol, Diana; Raşa, Ioan 6 2019 Bounds for some entropies and special functions. Zbl 1449.94049Bărar, Adina; Mocanu, Gabriela Raluca; Raşa, Ioan 6 2018 On Markov operators preserving polynomials. Zbl 1320.47035Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 6 2014 Overiterated linear operators and asymptotic behaviour of semigroups. Zbl 1179.41021Attalienti, Antonio; Rasa, Ioan 6 2008 Applications of an Ostrowski type inequality. Zbl 1269.26001Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 6 2012 Convexity properties of some entropies. II. Zbl 1429.26016Raşa, Ioan 6 2019 On some operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1359.41014Raşa, Ioan; Stǎnilǎ, Elena 6 2014 On the decomposition of Bernstein operators. Zbl 1315.41010Heilmann, Margareta; Raşa, Ioan 5 2015 Best constant in Hyers-Ulam stability of some functional equations. Zbl 1349.39055Popa, Dorian; Raşa, Ioan 5 2014 A Voronovskaya estimate with second order modulus of smoothness. Zbl 1212.41016Gonska, Heiner; Raşa, Ioan 5 2008 Heun functions related to entropies. Zbl 1416.33031Bărar, Adina; Mocanu, Gabriela; Raşa, Ioan 5 2019 \(C_0\)-semigroups associated with uniquely ergodic Kantorovich modifications of operators. Zbl 1395.37003Heilmann, Margareta; Raşa, Ioan 5 2018 Feller semigroups, Bernstein type operators and generalized convexity associated with positive projections. Zbl 0938.41013Altomare, Francesco; Rasa, Ioan 5 1999 Towards a characterization of a class of differential operators associated with positive projections. Zbl 0917.35042Altomare, Francesco; Raşa, Ioan 5 1998 On some classes of diffusion equations and related approximation problems. Zbl 1077.35026Altomare, Francesco; Rasa, Ioan 5 2005 On a class of exponential-type operators and their limit semigroups. Zbl 1076.41010Altomare, Francesco; Raşa, Ioan 5 2005 Ulam stability of a successive approximation equation. Zbl 1443.39011Baias, Alina Ramona; Popa, Dorian; Raşa, Ioan 5 2020 Čhebyšhev-Grüss-type inequalities revisited. Zbl 1324.26023Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 5 2013 Power series of Bernstein operators and approximation of resolvents. Zbl 1259.41033Raşa, Ioan 4 2012 The Jensen inequality: Refinements and applications. Zbl 0585.26012Andrica, D.; Raşa, I. 4 1985 Systems of nonlinear algebraic equations with unique solution. Zbl 1312.65081Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 4 2015 A note on Jessen’s inequality. Zbl 0661.26008Raşa, I. 4 1988 Convergence of iterates of genuine and ultraspherical Durrmeyer operators to the limiting semigroup: \(C^{2}\)-estimates. Zbl 1184.41005Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 4 2009 An algorithm for solving some nonlinear systems with applications to extremum problems. Zbl 1250.65071Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 4 2012 Approximate solutions of the logistic equation and Ulam stability. Zbl 1402.39016Popa, Dorian; Rasa, Ioan; Viorel, Adrian 4 2018 Classes of convex functions associated with Bernstein operators of second kind. Zbl 1111.26014Rasa, Ioan 4 2006 Voronovskaya type results and operators fixing two functions. Zbl 1500.41005Acu, Ana Maria; Măduţa, Alexandra-Ioana; Rasa, Ioan 4 2021 A nice representation for a link between Bernstein-Durrmeyer and Kantorovich operators. Zbl 1514.41018Heilmann, Margareta; Raşa, Ioan 4 2017 Approximation properties of Szász-Mirakyan operators preserving exponential functions. Zbl 1436.41012Aral, Ali; Inoan, Daniela; Raşa, Ioan 4 2019 Korovkin approximation and parabolic functions. Zbl 0783.41019Rasa, I. 4 1991 Beta operators with Jacobi weights. Zbl 1416.41025Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 4 2014 Voronovskaya type results for special sequences of operators. Zbl 1483.41005Acu, Ana-Maria; Dancs, Madalina; Heilmann, Margareta; Paşca, Vlad; Rasa, Ioan 4 2022 Steklov averages as positive linear operators. Zbl 1474.41067Popa, Dorian; Raşa, Ioan 4 2016 Information potential for some probability density functions. Zbl 1465.94032Acu, Ana-Maria; Başcanbaz-Tunca, Gülen; Rasa, Ioan 4 2021 Altomare projections and Lototsky-Schnabl operators. Zbl 0818.41018Rasa, Ioan 3 1994 On Jessen’s inequality. Zbl 0786.26013Pečarić, J. E.; Raşa, I. 3 1992 On the composition and decomposition of positive linear operators. II. Zbl 1240.41004Gonska, Heiner; Raşa, Ioan 3 2010 Gamma-type operators and the Black-Scholes semigroup. Zbl 1215.41008Attalienti, Antonio; Mininni, Rosa Maria; Rasa, Ioan 3 2011 Asymptotic behaviour of certain semigroups generated by differential operators. Zbl 1181.47047Rasa, Ioan 3 2009 A majorization inequality for Wright-convex functions revisited. Zbl 1250.26010Inoan, D.; Raşa, I. 3 2012 Iterated boolean sums of Bernstein and related operator. Zbl 1150.41017Raşa, Ioan 3 2006 Iterated Boolean sums of Bernstein type operators. Zbl 1447.41005Acar, Tuncer; Aral, Ali; Raşa, Ioan 3 2020 Lagrange-type operators associated with \(U_n^{\varrho}\). Zbl 1349.41040Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 3 2014 Feller semigroups, elliptic operators and Altomare projections. Zbl 1019.47035Rasa, Ioan 3 2002 Voronovskaya type results for special sequences of operators. Zbl 1483.41005Acu, Ana-Maria; Dancs, Madalina; Heilmann, Margareta; Paşca, Vlad; Rasa, Ioan 4 2022 Relations between the Bernstein polynomials and \(q\)-monotone functions. Zbl 07612306Abel, Ulrich; Leviatan, Dany; Raşa, Ioan 2 2022 Functional equations related to Appell polynomials and Heun functions. Zbl 1511.39018Acu, Ana-Maria; Rasa, Ioan 1 2022 A Bernstein-Schnabl type operator: applications to difference equations. Zbl 1513.41016Acu, Ana-Maria; Dancs, Madalina; Heilmann, Margareta; Paşca, Vlad; Raşa, Ioan 1 2022 Voronovskaya type results and operators fixing two functions. Zbl 1500.41005Acu, Ana Maria; Măduţa, Alexandra-Ioana; Rasa, Ioan 4 2021 Information potential for some probability density functions. Zbl 1465.94032Acu, Ana-Maria; Başcanbaz-Tunca, Gülen; Rasa, Ioan 4 2021 Iterates of convolution-type operators. Zbl 1465.41006Acu, Ana-Maria; Heilmann, Margareta; Rasa, Ioan 3 2021 A sequence of Appell polynomials and the associated Jakimovski-Leviatan operators. Zbl 1473.41004Acu, Ana-Maria; Buscu, Ioan Cristian; Rasa, Ioan 3 2021 Heun equations and combinatorial identities. Zbl 1488.33074Barar, Adina; Mocanu, Gabriela; Raşa, Ioan 1 2021 Differences of positive linear operators on simplices. Zbl 07348597Acu, Ana-Maria; Başcanbaz-Tunca, Gülen; Rasa, Ioan 1 2021 Bounds for indices of coincidence and entropies. Zbl 1466.94012Acu, Ana Maria; Başcanbaz-Tunca, Gülen; Raşa, Ioan 1 2021 Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators. II. Zbl 1490.41012Acu, Ana-Maria; Heilmann, Margareta; Rasa, Ioan 1 2021 Ulam stability of a successive approximation equation. Zbl 1443.39011Baias, Alina Ramona; Popa, Dorian; Raşa, Ioan 5 2020 Iterated Boolean sums of Bernstein type operators. Zbl 1447.41005Acar, Tuncer; Aral, Ali; Raşa, Ioan 3 2020 Bounds for solutions of linear differential equations and Ulam stability. Zbl 1474.34069Blaga, Florina; Mesaroş, Laura; Popa, Dorian; Pugna, Georgiana; Raşa, Ioan 2 2020 Estimates for the differences of positive linear operators and their derivatives. Zbl 1448.41018Acu, Ana-Maria; Raşa, Ioan 2 2020 Discrete operators associated with linking operators. Zbl 1459.41011Heilmann, Margareta; Nasaireh, Fadel; Raşa, Ioan 1 2020 Strong converse results for linking operators and convex functions. Zbl 1459.41008Acu, Ana-Maria; Heilmann, Margareta; Rasa, Ioan 1 2020 Multivariate weighted Kantorovich operators. Zbl 1503.41014Acu, Ana-Maria; Hodis, Laura; Rasa, Ioan 1 2020 Linking Baskakov type operators. Zbl 1460.41003Acu, Ana Maria; Heilmann, Margareta; Raşa, Ioan 1 2020 Positive linear operators preserving \(\tau\) and \(\tau^2\). Zbl 1463.41046Acar, Tuncer; Aral, Ali; Raşa, Ioan 13 2019 On differences of linear positive operators. Zbl 1428.41024Aral, Ali; Inoan, Daniela; Raşa, Ioan 12 2019 A Nice representation for a link between Baskakov- and Szász-Mirakjan-Durrmeyer operators and their Kantorovich variants. Zbl 1404.41007Heilmann, Margareta; Raşa, Ioan 8 2019 On approximation by some Bernstein-Kantorovich exponential-type polynomials. Zbl 1449.41005Aral, Ali; Otrocol, Diana; Raşa, Ioan 6 2019 Convexity properties of some entropies. II. Zbl 1429.26016Raşa, Ioan 6 2019 Heun functions related to entropies. Zbl 1416.33031Bărar, Adina; Mocanu, Gabriela; Raşa, Ioan 5 2019 Approximation properties of Szász-Mirakyan operators preserving exponential functions. Zbl 1436.41012Aral, Ali; Inoan, Daniela; Raşa, Ioan 4 2019 Ulam stability of operators. Zbl 1393.39001Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing 67 2018 A survey on estimates for the differences of positive linear operators. Zbl 1463.41047Acu, Ana Maria; Hodiş, Sever; Raşa, Ioan 12 2018 Elliptic differential operators and positive semigroups associated with generalized Kantorovich operators. Zbl 1460.35098Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 11 2018 A sharpening of a problem on Bernstein polynomials and convex functions. Zbl 1400.26031Abel, Ulrich; Raşa, Ioan 9 2018 Another look at Voronovskaja type formulas. Zbl 1391.41016Nasaireh, Fadel; Raşa, Ioan 8 2018 Convexity properties of some entropies. Zbl 1448.94118Raşa, Ioan 7 2018 Bounds for some entropies and special functions. Zbl 1449.94049Bărar, Adina; Mocanu, Gabriela Raluca; Raşa, Ioan 6 2018 \(C_0\)-semigroups associated with uniquely ergodic Kantorovich modifications of operators. Zbl 1395.37003Heilmann, Margareta; Raşa, Ioan 5 2018 Approximate solutions of the logistic equation and Ulam stability. Zbl 1402.39016Popa, Dorian; Rasa, Ioan; Viorel, Adrian 4 2018 Beta and related operators revisited. Zbl 1445.41015Heilmann, Margareta; Nasaireh, Fadel; Raşa, Ioan 2 2018 Convergence properties of nets of operators. Zbl 1382.41019Nasaireh, Fadel; Popa, Dorian; Rasa, Ioan 1 2018 Hyers-Ulam stability of the Laplace operator. Zbl 1388.39018Popa, Dorian; Raşa, Ioan 1 2018 Smoothness and shape preserving properties of Bernstein semigroup. Zbl 1482.47082Hodiş, Sever; Mesaroş, Laura; Raşa, Ioan 1 2018 Hyers-Ulam stability with respect to gauges. Zbl 1404.34016Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan 16 2017 A generalization of Kantorovich operators for convex compact subsets. Zbl 1383.41003Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 15 2017 Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators. Zbl 1375.37016Heilmann, Margareta; Raşa, Ioan 9 2017 A nice representation for a link between Bernstein-Durrmeyer and Kantorovich operators. Zbl 1514.41018Heilmann, Margareta; Raşa, Ioan 4 2017 Complete monotonicity of some entropies. Zbl 1399.94057Raşa, Ioan 1 2017 Differential operators and approximation processes generated by Markov operators. Zbl 1441.47014Altomare, F.; Cappelletti Montano, M.; Leonessa, V.; Raşa, I. 1 2017 On the composition and decomposition of positive linear operators (V). Zbl 1379.41022Gonska, Heiner; Raşa, Ioan 1 2017 Systems of nonlinear algebraic equations with positive solutions. Zbl 1372.65145Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 1 2017 The new forms of Voronovskaya’s theorem in weighted spaces. Zbl 1334.41015Acar, Tuncer; Aral, Ali; Rasa, Ioan 54 2016 New estimates for the differences of positive linear operators. Zbl 1357.41018Acu, Ana Maria; Raşa, Ioan 33 2016 Best constant in stability of some positive linear operators. Zbl 1353.39028Popa, Dorian; Raşa, Ioan 13 2016 Approximation by \(k\)-th order modifications of Szász-Mirakyan operators. Zbl 1389.41016Acar, Tuncer; Aral, Ali; Raşa, Ioan 9 2016 Voronovskaya type theorems in weighted spaces. Zbl 1357.41022Erençin, Ayşegül; Raşa, Ioan 9 2016 Further results for \(k\)th order Kantorovich modification of linking Baskakov type operators. Zbl 1339.41030Baumann, Katharina; Heilmann, Margareta; Raşa, Ioan 7 2016 Steklov averages as positive linear operators. Zbl 1474.41067Popa, Dorian; Raşa, Ioan 4 2016 Eigenstructure of the genuine Beta operators of Lupaş and Mühlbach. Zbl 1413.65095Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 2 2016 \(C_0\)-semigroups associated with Markov operators. Zbl 1337.47060Mocanu, Gabriela; Raşa, Ioan 1 2016 Entropies and Heun functions associated with positive linear operators. Zbl 1410.41039Raşa, Ioan 14 2015 \(k\)th order Kantorovich modification of linking Baskakov-type operators. Zbl 1337.41010Heilmann, Margareta; Raşa, Ioan 7 2015 On the decomposition of Bernstein operators. Zbl 1315.41010Heilmann, Margareta; Raşa, Ioan 5 2015 Systems of nonlinear algebraic equations with unique solution. Zbl 1312.65081Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 4 2015 Power series of the operators \(U_n^\varrho\). Zbl 1318.41006Gonska, Heiner; Raşa, Ioan; Stănilă, Elena Dorina 1 2015 Markov operators, positive semigroups and approximation processes. Zbl 1352.47001Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 40 2014 On the generalized Szász-Mirakyan operators. Zbl 1293.41009Aral, A.; Inoan, D.; Raşa, I. 39 2014 On the best constant in Hyers-Ulam stability of some positive linear operators. Zbl 1308.41026Popa, Dorian; Raşa, Ioan 14 2014 The eigenstructure of operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1295.41021Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 14 2014 Chebyshev-Grüss-type inequalities via discrete oscillations. Zbl 1305.26040Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 13 2014 On differential operators associated with Markov operators. Zbl 1285.47048Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 11 2014 Approximation properties of Bernstein-Durrmeyer type operators. Zbl 1410.41030Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 10 2014 \(k\)th order Kantorovich type modification of the operators \(U^{\rho}_n\). Zbl 1358.41017Heilmann, Margareta; Raşa, Ioan 8 2014 On Markov operators preserving polynomials. Zbl 1320.47035Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 6 2014 On some operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1359.41014Raşa, Ioan; Stǎnilǎ, Elena 6 2014 Best constant in Hyers-Ulam stability of some functional equations. Zbl 1349.39055Popa, Dorian; Raşa, Ioan 5 2014 Beta operators with Jacobi weights. Zbl 1416.41025Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 4 2014 Lagrange-type operators associated with \(U_n^{\varrho}\). Zbl 1349.41040Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 3 2014 Hyers-Ulam stability of some differential equations and differential operators. Zbl 1320.34083Popa, Dorian; Raşa, Ioan 2 2014 Power series of Beta operators. Zbl 1338.41010Acar, Tuncer; Aral, Ali; Rasa, Ioan 2 2014 The eigenstructure of some positive linear operators. Zbl 1389.41027Attalienti, Antonio; Raşa, Ioan 1 2014 Complete monotonicity and limit of a generalized Euler sequence. Zbl 1308.40002Popa, Dorian; Raşa, Ioan 1 2014 On the stability of some classical operators from approximation theory. Zbl 1284.39032Popa, Dorian; Raşa, Ioan 10 2013 On infinite products of positive linear operators reproducing linear functions. Zbl 1271.41006Gonska, Heiner; Raşa, Ioan 7 2013 Čhebyšhev-Grüss-type inequalities revisited. Zbl 1324.26023Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 5 2013 On the sequence of composite Bernstein operators (Sur la suite des opérateurs Bernstein composés). Zbl 1349.41039Gonska, Heiner; Raşa, Ioan 2 2013 A recursive algorithm for Bernstein operators of second kind. Zbl 1283.65012Inoan, Daniela; Raşa, Ioan 2 2013 Optimality of piecewise image-linear interpolating operators. Zbl 1295.41019Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 1 2013 Hyers-Ulam stability of the linear differential operator with nonconstant coefficients. Zbl 1368.34075Popa, Dorian; Raşa, Ioan 45 2012 Asymptotic formulae via a Korovkin-type result. Zbl 1241.41012Cárdenas-Morales, Daniel; Garrancho, Pedro; Raşa, Ioan 18 2012 The Fréchet functional equation with application to the stability of certain operators. Zbl 1238.39008Popa, Dorian; Raşa, Ioan 18 2012 Lipschitz contractions, unique ergodicity and asymptotics of Markov semigroups. Zbl 1268.47013Altomare, Francesco; Raşa, Ioan 13 2012 The genuine Bernstein-Durrmeyer operators revisited. Zbl 1253.41020Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 11 2012 Applications of an Ostrowski type inequality. Zbl 1269.26001Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 6 2012 Power series of Bernstein operators and approximation of resolvents. Zbl 1259.41033Raşa, Ioan 4 2012 An algorithm for solving some nonlinear systems with applications to extremum problems. Zbl 1250.65071Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 4 2012 A majorization inequality for Wright-convex functions revisited. Zbl 1250.26010Inoan, D.; Raşa, I. 3 2012 Estimates for the semigroup associated with Bernstein-Schnabl operators. Zbl 1265.41056Raşa, Ioan 2 2012 Generalized Ostrowski-Grüss-type inequalities. Zbl 1257.26014Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 2 2012 On the Hyers-Ulam stability of the linear differential equation. Zbl 1222.34069Popa, Dorian; Raşa, Ioan 86 2011 Bernstein-type operators which preserve polynomials. Zbl 1228.41019Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 49 2011 Grüss-type and Ostrowski-type inequalities in approximation theory. Zbl 1254.41011Acu, A. M.; Gonska, H.; Raşa, I. 42 2011 Kantorovich operators of order \(k\). Zbl 1236.41023Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 30 2011 ...and 64 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 551 Authors 90 Rasa, Ioan 51 Acu, Ana Maria 28 Aral, Ali 25 Gupta, Vijay 24 Acar, Tuncer 20 Heilmann, Margareta 19 Onitsuka, Masakazu 18 Agrawal, Purshottam Narain 18 Popa, Dorian 16 Jung, Soon-Mo 16 Kajla, Arun 14 Abel, Ulrich 14 Altomare, Francesco 14 Mursaleen, Mohammad 13 Brzdęk, Janusz 13 Costarelli, Danilo 13 Vinti, Gianluca 12 Mishra, Vishnu Narayan 11 Bardaro, Carlo 11 Cappelletti Montano, Mirella 11 Gonska, Heinz Herbert 11 Leonessa, Vita 11 Mantellini, Ilaria 11 Tachev, Gancho T. 10 Gavrea, Ioan 9 Campiti, Michele 9 Cárdenas-Morales, Daniel 9 Ivan, Mircea Dumitru 9 Wang, Jinrong 8 Anderson, Douglas Robert 8 Birou, Marius Mihai 8 Deo, Naokant 8 Dragičević, Davor 8 Păltănea, Radu 7 Bascanbaz-Tunca, Gulen 7 Garrancho, Pedro 6 Baias, Alina-Ramona 6 Chu, Yuming 6 Draganov, Borislav R. 6 Dragomir, Sever Silvestru 6 El-hady, El-sayed 6 Gal, Sorin Gheorghe 6 Holhoş, Adrian 6 Khan, Asif 6 Mohiuddine, Syed Abdul 6 Popa, Dumitru 6 Shen, Yonghong 6 Xu, Tianzhou 6 Zada, Akbar 5 Alotaibi, Abdullah M. 5 Ansari, Khursheed Jamal 5 Cai, Qingbo 5 El-Fassi, Iz-Iddine 5 Erençin, Ayşegül 5 Inoan, Daniela Ioana 5 Komisarski, Andrzej 5 Leviatan, Dany 5 Mahmudov, Nazim Idrisoglu 5 Ozarslan, Mehmet Ali 5 Tacelli, Cristian 5 Wang, Chun 4 Abbas, Zaheer 4 Adell, José Antonio 4 Angeloni, Laura 4 Backes, Lucas H. 4 Çetin, Nursel 4 Ciepliński, Krzysztof 4 Gavrea, Bogdan I. 4 Ịçöz, Gürhan 4 İnce İlarslan, Hatice Gül 4 Li, Yongjin 4 Mangino, Elisabetta M. 4 Miclăuş, Dan 4 Mocanu, Gabriela Raluca 4 Qasim, Mohd 4 Radu, Voichiţa Adriana 4 Rajba, Teresa 4 Rao, Nadeem 4 Rassias, Michael Th. 4 Rassias, Themistocles Michael 4 Roh, Jaiok 4 Sucu, Sezgin 4 Ulusoy, Gulsum 4 Xu, Xiaowei 3 Abdollahpour, Mohammad Reza 3 Agratini, Octavian 3 Agrawal, Deepika 3 Alagoz, Osman 3 Albanese, Angela Anna 3 Alghamdi, Mohammed Ali 3 Alzer, Horst 3 Baxhaku, Behar 3 Bodur, Murat 3 Braha, Naim Latif 3 Çekım, Bayram 3 Cheng, Wentao 3 Choi, Ginkyu 3 Dăianu, Dan M. 3 Dancs, Madalina 3 Deshwal, Sheetal ...and 451 more Authors all top 5 Cited in 144 Serials 61 Results in Mathematics 35 Journal of Mathematical Analysis and Applications 35 Applied Mathematics and Computation 29 Mediterranean Journal of Mathematics 24 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. 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Second Series 1 Jnanabha 1 Kyungpook Mathematical Journal 1 Memoirs of the American Mathematical Society 1 Rendiconti del Seminario Matemàtico e Fisico di Milano 1 Siberian Mathematical Journal 1 Theoretical Computer Science 1 Tokyo Journal of Mathematics 1 Zeitschrift für Analysis und ihre Anwendungen 1 Bulletin of the Korean Mathematical Society 1 Acta Mathematica Hungarica 1 Acta Applicandae Mathematicae 1 Computer Aided Geometric Design 1 Constructive Approximation 1 Applications of Mathematics 1 Godishnik na Sofiĭskiya Universitet “Sv. Kliment Okhridski”. Fakultet po Matematika i Informatika 1 Journal de Mathématiques Pures et Appliquées. Neuvième Série 1 Linear Algebra and its Applications 1 Proceedings of the Royal Society of Edinburgh. Section A. 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