Edit Profile Rasa, Ioan Compute Distance To: Compute Author ID: rasa.ioan Published as: Rasa, I.; Rasa, Ioan; Rasa, Ion; Raşa, I.; Raşa, Ioan; Raşa, Ion; Raṣa, I. External Links: MGP Documents Indexed: 222 Publications since 1975, including 2 Books Reviewing Activity: 509 Reviews all top 5 Co-Authors 62 single-authored 29 Gonska, Heinz Herbert 20 Popa, Dorian 16 Heilmann, Margareta 14 Altomare, Francesco 10 Aral, Ali 10 Pečarić, Josip 8 Acu, Ana Maria 8 Inoan, Daniela Ioana 7 Campiti, Michele 7 Leonessa, Vita 6 Acar, Tuncer 6 Attalienti, Antonio 5 Cappelletti Montano, Mirella 5 Mocanu, Gabriela Raluca 5 Nasaireh, Fadel 5 Stănilă, Elena-Dorina 5 Toader, Gheorghe 4 Cárdenas-Morales, Daniel 4 Ciurte, Anca 4 Garrancho, Pedro 4 Nedevschi, Sergiu 4 Piţul, Paula Anamaria 4 Rusu, Maria-Daniela 3 Bărar, Adina Elena 3 Hodiş, Sever 3 Kacsó, Daniela P. 3 Mesaroş, Laura 3 Pugna, Georgiana 3 Vladislav, Tiberiu 2 Andrica, Dorin 2 Brzdęk, Janusz 2 Gavrea, Ioan 2 Ivan, Mircea Dumitru 2 Sándor, József 2 Tacelli, Cristian 1 Abel, Ulrich 1 Adell, José Antonio 1 Badea, Catalin 1 Baias, Alina-Ramona 1 Bardaro, Carlo 1 Bascanbaz-Tunca, Gulen 1 Baumann, Katharina 1 Blaga, Florina 1 Câmpian, Vasile 1 de la Cal, Jesús 1 Della Vecchia, Biancamaria 1 Erençin, Ayşegül 1 Ivan, Dumitru Mircea 1 Labsker, L. G. 1 Mache, Detlef-Hauke 1 Mangino, Elisabetta M. 1 Mastroianni, Giuseppe 1 Mininni, Rosamaria 1 Montano, M. Cappelletti 1 Otrocol, Diana 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 11 Revue d’Analyse Numérique et de Théorie de l’Approximation 10 Results in Mathematics 10 Studia Universitatis Babeş-Bolyai. Mathematica 10 Mediterranean Journal of Mathematics 7 Carpathian Journal of Mathematics 6 Applied Mathematics and Computation 6 General Mathematics 6 Positivity 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 Numerical Functional Analysis and Optimization 4 Acta Mathematica Hungarica 4 Numerical Algorithms 4 Preprint. “Babeş-Bolyai” University. Faculty of Mathematics and Physics. Research Seminars 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 Mathematical Inequalities & Applications 2 Journal of Computational Analysis and Applications 2 Journal of Applied Functional Analysis 2 Jaen Journal on Approximation 2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 2 Analysis and Mathematical Physics 2 Journal of Function Spaces 2 Constructive Mathematical Analysis 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 Matematichki 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 Ştiinţific al Institutului Politehnic Cluj-Napoca. Seria: Electrotehnica-Energetica-Informatica 1 Zeitschrift für Analysis und ihre Anwendungen 1 Approximation Theory and its Applications 1 Buletinul Ştiinţific al Institutului Politehnic Cluj-Napoca. Seria: Matematică, Mecanică Aplicată. Construcţii de Maşini 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 Ştiinţe 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 Fixed Point Theory 1 Miskolc Mathematical Notes 1 Preprint. “Babeş-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 Banach Journal of Mathematical Analysis 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 all top 5 Fields 148 Approximations and expansions (41-XX) 50 Operator theory (47-XX) 44 Real functions (26-XX) 22 Functional analysis (46-XX) 13 Difference and functional equations (39-XX) 12 Probability theory and stochastic processes (60-XX) 10 Partial differential equations (35-XX) 9 Numerical analysis (65-XX) 7 Ordinary differential equations (34-XX) 7 Information and communication theory, circuits (94-XX) 5 Dynamical systems and ergodic theory (37-XX) 4 Special functions (33-XX) 3 Linear and multilinear algebra; matrix theory (15-XX) 3 Measure and integration (28-XX) 2 Biology and other natural sciences (92-XX) 1 General and overarching topics; collections (00-XX) 1 Combinatorics (05-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 128 Publications have been cited 810 times in 417 Documents Cited by ▼ Year ▼ On the Hyers-Ulam stability of the linear differential equation. Zbl 1222.34069Popa, Dorian; Raşa, Ioan 57 2011 Ulam stability of operators. Zbl 1393.39001Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing 33 2018 Bernstein-type operators which preserve polynomials. Zbl 1228.41019Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 32 2011 Hyers-Ulam stability of the linear differential operator with nonconstant coefficients. Zbl 1368.34075Popa, Dorian; Raşa, Ioan 29 2012 The new forms of Voronovskaya’s theorem in weighted spaces. Zbl 1334.41015Acar, Tuncer; Aral, Ali; Rasa, Ioan 28 2016 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 28 2006 Markov operators, positive semigroups and approximation processes. Zbl 1352.47001Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 23 2014 On the generalized Szász-Mirakyan operators. Zbl 1293.41009Aral, A.; Inoan, D.; Raşa, I. 23 2014 General King-type operators. Zbl 1181.41041Gonska, Heiner; Piţul, Paula; Raşa, Ioan 23 2009 New estimates for the differences of positive linear operators. Zbl 1357.41018Acu, Ana Maria; Raşa, Ioan 22 2016 Grüss-type and Ostrowski-type inequalities in approximation theory. Zbl 1254.41011Acu, A. M.; Gonska, H.; Raşa, I. 22 2011 The limiting semigroup of the Bernstein iterates: degree of convergence. Zbl 1121.41004Gonska, H.; Raşa, I. 22 2006 Kantorovich operators of order \(k\). Zbl 1236.41023Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 19 2011 Asymptotic behaviour of differentiated Bernstein polynomials. Zbl 1274.41036Gonska, Heiner; Raşa, Ioan 18 2009 On genuine Bernstein-Durrmeyer operators. Zbl 1145.41004Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 16 2006 The Fréchet functional equation with application to the stability of certain operators. Zbl 1238.39008Popa, Dorian; Raşa, Ioan 15 2012 Chebyshev-Grüss-type inequalities via discrete oscillations. Zbl 1305.26040Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 13 2014 Hyers-Ulam stability with respect to gauges. Zbl 1404.34016Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan 12 2017 Asymptotic formulae via a Korovkin-type result. Zbl 1241.41012Cárdenas-Morales, Daniel; Garrancho, Pedro; Raşa, Ioan 11 2012 On the best constant in Hyers-Ulam stability of some positive linear operators. Zbl 1308.41026Popa, Dorian; Raşa, Ioan 10 2014 On Bernstein-Schnabl operators on the unit interval. Zbl 1140.41304Altomare, Francesco; Leonessa, Vita; Raşa, Ioan 10 2008 Remarks on some quantitative Korovkin-type results. Zbl 0821.41022Gavrea, I.; Raşa, I. 10 1993 Best constant in stability of some positive linear operators. Zbl 1353.39028Popa, Dorian; Raşa, Ioan 9 2016 On the stability of some classical operators from approximation theory. Zbl 1284.39032Popa, Dorian; Raşa, Ioan 9 2013 Lipschitz contractions, unique ergodicity and asymptotics of Markov semigroups. Zbl 1268.47013Altomare, Francesco; Raşa, Ioan 9 2012 Over-iterates of Bernstein-Stancu operators. Zbl 1150.41013Gonska, Heiner; Piţul, Paula; Raşa, Ioan 9 2007 A quantitative version of Trotter’s approximation theorem. Zbl 1118.41007Mangino, Elisabetta M.; Raşa, Ioan 9 2007 On differences of positive linear operators. Zbl 1150.41012Gonska, Heiner; Piţul, Paula; Raşa, Ioan 9 2006 Inequalities for certain means in two arguments. Zbl 0938.26011Sándor, J.; Raşa, I. 9 1997 A generalization of Kantorovich operators for convex compact subsets. Zbl 1383.41003Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 8 2017 On differential operators associated with Markov operators. Zbl 1285.47048Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 8 2014 Remarks on Voronovskaya’s theorem. Zbl 1199.41028Gonska, Heiner; Raşa, Ioan 8 2008 Qualitative properties of a class of Fleming–Viot operators. Zbl 1101.47028Campiti, M.; Rasa, I. 8 2004 Approximation properties of Bernstein-Durrmeyer type operators. Zbl 1410.41030Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 7 2014 \(k\)th order Kantorovich type modification of the operators \(U^{\rho}_n\). Zbl 1358.41017Heilmann, Margareta; Raşa, Ioan 7 2014 Differences of positive linear operators and the second order modulus. Zbl 1249.41014Gonska, Heiner; Raşa, Ioan 7 2008 Entropies and Heun functions associated with positive linear operators. Zbl 1410.41039Raşa, Ioan 6 2015 The eigenstructure of operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1295.41021Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 6 2014 Another look at Voronovskaja type formulas. Zbl 1391.41016Nasaireh, Fadel; Raşa, Ioan 5 2018 Voronovskaya type theorems in weighted spaces. Zbl 1357.41022Erençin, Ayşegül; Raşa, Ioan 5 2016 On Markov operators preserving polynomials. Zbl 1320.47035Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 5 2014 Asymptotic behaviour of differential Bernstein polynomials revisited. Zbl 1212.41057Gonska, Heiner; Heilmann, Margareta; Rasa, Ioan 5 2010 Asymptotic behaviour of iterates of positive linear operators. Zbl 1184.41013Rasa, Ioan 5 2009 On differences of linear positive operators. Zbl 1428.41024Aral, Ali; Inoan, Daniela; Raşa, Ioan 4 2019 Convexity properties of some entropies. Zbl 1448.94118Raşa, Ioan 4 2018 Elliptic differential operators and positive semigroups associated with generalized Kantorovich operators. Zbl 06802308Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 4 2018 Further results for \(k\)th order Kantorovich modification of linking Baskakov type operators. Zbl 1339.41030Baumann, Katharina; Heilmann, Margareta; Raşa, Ioan 4 2016 On the decomposition of Bernstein operators. Zbl 1315.41010Heilmann, Margareta; Raşa, Ioan 4 2015 On some operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1359.41014Raşa, Ioan; Stǎnilǎ, Elena 4 2014 Best constant in Hyers-Ulam stability of some functional equations. Zbl 1349.39055Popa, Dorian; Raşa, Ioan 4 2014 Čhebyšhev-Grüss-type inequalities revisited. Zbl 1324.26023Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 4 2013 On infinite products of positive linear operators reproducing linear functions. Zbl 1271.41006Gonska, Heiner; Raşa, Ioan 4 2013 Power series of Bernstein operators and approximation of resolvents. Zbl 1259.41033Raşa, Ioan 4 2012 The genuine Bernstein-Durrmeyer operators revisited. Zbl 1253.41020Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 4 2012 A Voronovskaya estimate with second order modulus of smoothness. Zbl 1212.41016Gonska, Heiner; Raşa, Ioan 4 2008 On a class of exponential-type operators and their limit semigroups. Zbl 1076.41010Altomare, Francesco; Raşa, Ioan 4 2005 Feller semigroups, Bernstein type operators and generalized convexity associated with positive projections. Zbl 0938.41013Altomare, Francesco; Rasa, Ioan 4 1999 A note on Jessen’s inequality. Zbl 0661.26008Raşa, I. 4 1988 The Jensen inequality: Refinements and applications. Zbl 0585.26012Andrica, D.; Raşa, I. 4 1985 Convexity properties of some entropies. II. Zbl 1429.26016Raşa, Ioan 3 2019 A Nice representation for a link between Baskakov- and Szász-Mirakjan-Durrmeyer operators and their Kantorovich variants. Zbl 1404.41007Heilmann, Margareta; Raşa, Ioan 3 2019 A sharpening of a problem on Bernstein polynomials and convex functions. Zbl 1400.26031Abel, Ulrich; Raşa, Ioan 3 2018 Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators. Zbl 1375.37016Heilmann, Margareta; Raşa, Ioan 3 2017 Approximation by \(k\)-th order modifications of Szász-Mirakyan operators. Zbl 1389.41016Acar, Tuncer; Aral, Ali; Raşa, Ioan 3 2016 \(k\)th order Kantorovich modification of linking Baskakov-type operators. Zbl 1337.41010Heilmann, Margareta; Raşa, Ioan 3 2015 Lagrange-type operators associated with \(U_n^{\varrho}\). Zbl 1349.41040Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 3 2014 An algorithm for solving some nonlinear systems with applications to extremum problems. Zbl 1250.65071Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 3 2012 Gamma-type operators and the Black-Scholes semigroup. Zbl 1215.41008Attalienti, Antonio; Mininni, Rosa Maria; Rasa, Ioan 3 2011 Convergence of iterates of genuine and ultraspherical Durrmeyer operators to the limiting semigroup: \(C^{2}\)-estimates. Zbl 1184.41005Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 3 2009 Asymptotic behaviour of certain semigroups generated by differential operators. Zbl 1181.47047Rasa, Ioan 3 2009 Overiterated linear operators and asymptotic behaviour of semigroups. Zbl 1179.41021Attalienti, Antonio; Rasa, Ioan 3 2008 Towards a characterization of a class of differential operators associated with positive projections. Zbl 0917.35042Altomare, Francesco; Raşa, Ioan 3 1998 Altomare projections and Lototsky-Schnabl operators. Zbl 0818.41018Rasa, Ioan 3 1994 Positive linear operators preserving \(\tau\) and \(\tau^2\). Zbl 07259285Acar, Tuncer; Aral, Ali; Raşa, Ioan 2 2019 Heun functions related to entropies. Zbl 1416.33031Bărar, Adina; Mocanu, Gabriela; Raşa, Ioan 2 2019 Systems of nonlinear algebraic equations with unique solution. Zbl 1312.65081Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 2 2015 On the sequence of composite Bernstein operators (Sur la suite des opérateurs Bernstein composés). Zbl 1349.41039Gonska, Heiner; Raşa, Ioan 2 2013 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 Applications of an Ostrowski type inequality. Zbl 1269.26001Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 2 2012 A majorization inequality for Wright-convex functions revisited. Zbl 1250.26010Inoan, D.; Raşa, I. 2 2012 On the composition and decomposition of positive linear operators. II. Zbl 1240.41004Gonska, Heiner; Raşa, Ioan 2 2010 Steklov operators and their associated semigroups. Zbl 1174.41020Campiti, Michele; Rasa, Ioan; Tacelli, Cristian 2 2008 Steklov operators and semigroups in weighted spaces of continuous real functions. Zbl 1174.41019Campiti, M.; Rasa, I.; Tacelli, C. 2 2008 Iterated boolean sums of Bernstein and related operator. Zbl 1150.41017Raşa, Ioan 2 2006 Classes of convex functions associated with Bernstein operators of second kind. Zbl 1111.26014Rasa, Ioan 2 2006 One-dimensional diffusions and approximation. Zbl 1116.47037Rasa, Ioan 2 2005 On some classes of diffusion equations and related approximation problems. Zbl 1077.35026Altomare, Francesco; Rasa, Ioan 2 2005 Semigroups associated to Mache operators. Zbl 1042.41019Rasa, I. 2 2003 Feller semigroups, elliptic operators and Altomare projections. Zbl 1019.47035Rasa, Ioan 2 2002 Lototsky-Schnabl operators on the unit interval. Zbl 0951.41009Adell, José A.; de la Cal, Jesús; Raşa, Ioan 2 1999 On some properties of Altomare projections. Zbl 1041.41503Rasa, I. 2 1993 On the inequalities of Popoviciu and Rado. Zbl 0509.26006Rasa, I. 2 1982 On approximation by some Bernstein-Kantorovich exponential-type polynomials. Zbl 1449.41005Aral, Ali; Otrocol, Diana; Raşa, Ioan 1 2019 A survey on estimates for the differences of positive linear operators. Zbl 07251259Acu, Ana Maria; Hodiş, Sever; Raşa, Ioan 1 2018 Approximate solutions of the logistic equation and Ulam stability. Zbl 1402.39016Popa, Dorian; Rasa, Ioan; Viorel, Adrian 1 2018 \(C_0\)-semigroups associated with uniquely ergodic Kantorovich modifications of operators. Zbl 1395.37003Heilmann, Margareta; Raşa, Ioan 1 2018 Smoothness and shape preserving properties of Bernstein semigroup. Zbl 06909935Hodiş, Sever; Mesaroş, Laura; Raşa, Ioan 1 2018 Hyers-Ulam stability of the Laplace operator. Zbl 1388.39018Popa, Dorian; Raşa, Ioan 1 2018 A nice representation for a link between Bernstein-Durrmeyer and Kantorovich operators. Zbl 07215677Heilmann, Margareta; Raşa, Ioan 1 2017 On differences of linear positive operators. Zbl 1428.41024Aral, Ali; Inoan, Daniela; Raşa, Ioan 4 2019 Convexity properties of some entropies. II. Zbl 1429.26016Raşa, Ioan 3 2019 A Nice representation for a link between Baskakov- and Szász-Mirakjan-Durrmeyer operators and their Kantorovich variants. Zbl 1404.41007Heilmann, Margareta; Raşa, Ioan 3 2019 Positive linear operators preserving \(\tau\) and \(\tau^2\). Zbl 07259285Acar, Tuncer; Aral, Ali; Raşa, Ioan 2 2019 Heun functions related to entropies. Zbl 1416.33031Bărar, Adina; Mocanu, Gabriela; Raşa, Ioan 2 2019 On approximation by some Bernstein-Kantorovich exponential-type polynomials. Zbl 1449.41005Aral, Ali; Otrocol, Diana; Raşa, Ioan 1 2019 Ulam stability of operators. Zbl 1393.39001Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan; Xu, Bing 33 2018 Another look at Voronovskaja type formulas. Zbl 1391.41016Nasaireh, Fadel; Raşa, Ioan 5 2018 Convexity properties of some entropies. Zbl 1448.94118Raşa, Ioan 4 2018 Elliptic differential operators and positive semigroups associated with generalized Kantorovich operators. Zbl 06802308Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 4 2018 A sharpening of a problem on Bernstein polynomials and convex functions. Zbl 1400.26031Abel, Ulrich; Raşa, Ioan 3 2018 A survey on estimates for the differences of positive linear operators. Zbl 07251259Acu, Ana Maria; Hodiş, Sever; Raşa, Ioan 1 2018 Approximate solutions of the logistic equation and Ulam stability. Zbl 1402.39016Popa, Dorian; Rasa, Ioan; Viorel, Adrian 1 2018 \(C_0\)-semigroups associated with uniquely ergodic Kantorovich modifications of operators. Zbl 1395.37003Heilmann, Margareta; Raşa, Ioan 1 2018 Smoothness and shape preserving properties of Bernstein semigroup. Zbl 06909935Hodiş, Sever; Mesaroş, Laura; Raşa, Ioan 1 2018 Hyers-Ulam stability of the Laplace operator. Zbl 1388.39018Popa, Dorian; Raşa, Ioan 1 2018 Hyers-Ulam stability with respect to gauges. Zbl 1404.34016Brzdęk, Janusz; Popa, Dorian; Raşa, Ioan 12 2017 A generalization of Kantorovich operators for convex compact subsets. Zbl 1383.41003Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 8 2017 Eigenstructure and iterates for uniquely ergodic Kantorovich modifications of operators. Zbl 1375.37016Heilmann, Margareta; Raşa, Ioan 3 2017 A nice representation for a link between Bernstein-Durrmeyer and Kantorovich operators. Zbl 07215677Heilmann, Margareta; Raşa, Ioan 1 2017 Complete monotonicity of some entropies. Zbl 1399.94057Raşa, Ioan 1 2017 The new forms of Voronovskaya’s theorem in weighted spaces. Zbl 1334.41015Acar, Tuncer; Aral, Ali; Rasa, Ioan 28 2016 New estimates for the differences of positive linear operators. Zbl 1357.41018Acu, Ana Maria; Raşa, Ioan 22 2016 Best constant in stability of some positive linear operators. Zbl 1353.39028Popa, Dorian; Raşa, Ioan 9 2016 Voronovskaya type theorems in weighted spaces. Zbl 1357.41022Erençin, Ayşegül; Raşa, Ioan 5 2016 Further results for \(k\)th order Kantorovich modification of linking Baskakov type operators. Zbl 1339.41030Baumann, Katharina; Heilmann, Margareta; Raşa, Ioan 4 2016 Approximation by \(k\)-th order modifications of Szász-Mirakyan operators. Zbl 1389.41016Acar, Tuncer; Aral, Ali; Raşa, Ioan 3 2016 Steklov averages as positive linear operators. Zbl 06749781Popa, Dorian; Raşa, Ioan 1 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 6 2015 On the decomposition of Bernstein operators. Zbl 1315.41010Heilmann, Margareta; Raşa, Ioan 4 2015 \(k\)th order Kantorovich modification of linking Baskakov-type operators. Zbl 1337.41010Heilmann, Margareta; Raşa, Ioan 3 2015 Systems of nonlinear algebraic equations with unique solution. Zbl 1312.65081Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 2 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 23 2014 On the generalized Szász-Mirakyan operators. Zbl 1293.41009Aral, A.; Inoan, D.; Raşa, I. 23 2014 Chebyshev-Grüss-type inequalities via discrete oscillations. Zbl 1305.26040Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 13 2014 On the best constant in Hyers-Ulam stability of some positive linear operators. Zbl 1308.41026Popa, Dorian; Raşa, Ioan 10 2014 On differential operators associated with Markov operators. Zbl 1285.47048Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 8 2014 Approximation properties of Bernstein-Durrmeyer type operators. Zbl 1410.41030Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 7 2014 \(k\)th order Kantorovich type modification of the operators \(U^{\rho}_n\). Zbl 1358.41017Heilmann, Margareta; Raşa, Ioan 7 2014 The eigenstructure of operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1295.41021Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 6 2014 On Markov operators preserving polynomials. Zbl 1320.47035Altomare, Francesco; Cappelletti Montano, Mirella; Leonessa, Vita; Raşa, Ioan 5 2014 On some operators linking the Bernstein and the genuine Bernstein-Durrmeyer operators. Zbl 1359.41014Raşa, Ioan; Stǎnilǎ, Elena 4 2014 Best constant in Hyers-Ulam stability of some functional equations. Zbl 1349.39055Popa, Dorian; Raşa, Ioan 4 2014 Lagrange-type operators associated with \(U_n^{\varrho}\). Zbl 1349.41040Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 3 2014 Beta operators with Jacobi weights. Zbl 1416.41025Gonska, Heiner; Raşa, Ioan; Stănilă, Elena-Dorina 1 2014 Power series of Beta operators. Zbl 1338.41010Acar, Tuncer; Aral, Ali; Rasa, Ioan 1 2014 The eigenstructure of some positive linear operators. Zbl 1389.41027Attalienti, Antonio; Raşa, Ioan 1 2014 Hyers-Ulam stability of some differential equations and differential operators. Zbl 1320.34083Popa, Dorian; 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 9 2013 Čhebyšhev-Grüss-type inequalities revisited. Zbl 1324.26023Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 4 2013 On infinite products of positive linear operators reproducing linear functions. Zbl 1271.41006Gonska, Heiner; Raşa, Ioan 4 2013 On the sequence of composite Bernstein operators (Sur la suite des opérateurs Bernstein composés). Zbl 1349.41039Gonska, Heiner; 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 29 2012 The Fréchet functional equation with application to the stability of certain operators. Zbl 1238.39008Popa, Dorian; Raşa, Ioan 15 2012 Asymptotic formulae via a Korovkin-type result. Zbl 1241.41012Cárdenas-Morales, Daniel; Garrancho, Pedro; Raşa, Ioan 11 2012 Lipschitz contractions, unique ergodicity and asymptotics of Markov semigroups. Zbl 1268.47013Altomare, Francesco; Raşa, Ioan 9 2012 Power series of Bernstein operators and approximation of resolvents. Zbl 1259.41033Raşa, Ioan 4 2012 The genuine Bernstein-Durrmeyer operators revisited. Zbl 1253.41020Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 4 2012 An algorithm for solving some nonlinear systems with applications to extremum problems. Zbl 1250.65071Ciurte, Anca; Nedevschi, Sergiu; Rasa, Ioan 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 Applications of an Ostrowski type inequality. Zbl 1269.26001Gonska, Heiner; Raşa, Ioan; Rusu, Maria-Daniela 2 2012 A majorization inequality for Wright-convex functions revisited. Zbl 1250.26010Inoan, D.; Raşa, I. 2 2012 On the Hyers-Ulam stability of the linear differential equation. Zbl 1222.34069Popa, Dorian; Raşa, Ioan 57 2011 Bernstein-type operators which preserve polynomials. Zbl 1228.41019Cárdenas-Morales, D.; Garrancho, P.; Raşa, I. 32 2011 Grüss-type and Ostrowski-type inequalities in approximation theory. Zbl 1254.41011Acu, A. M.; Gonska, H.; Raşa, I. 22 2011 Kantorovich operators of order \(k\). Zbl 1236.41023Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 19 2011 Gamma-type operators and the Black-Scholes semigroup. Zbl 1215.41008Attalienti, Antonio; Mininni, Rosa Maria; Rasa, Ioan 3 2011 Asymptotic behaviour of differential Bernstein polynomials revisited. Zbl 1212.41057Gonska, Heiner; Heilmann, Margareta; Rasa, Ioan 5 2010 On the composition and decomposition of positive linear operators. II. Zbl 1240.41004Gonska, Heiner; Raşa, Ioan 2 2010 General King-type operators. Zbl 1181.41041Gonska, Heiner; Piţul, Paula; Raşa, Ioan 23 2009 Asymptotic behaviour of differentiated Bernstein polynomials. Zbl 1274.41036Gonska, Heiner; Raşa, Ioan 18 2009 Asymptotic behaviour of iterates of positive linear operators. Zbl 1184.41013Rasa, Ioan 5 2009 Convergence of iterates of genuine and ultraspherical Durrmeyer operators to the limiting semigroup: \(C^{2}\)-estimates. Zbl 1184.41005Gonska, Heiner; Heilmann, Margareta; Raşa, Ioan 3 2009 Asymptotic behaviour of certain semigroups generated by differential operators. Zbl 1181.47047Rasa, Ioan 3 2009 On Bernstein-Schnabl operators on the unit interval. Zbl 1140.41304Altomare, Francesco; Leonessa, Vita; Raşa, Ioan 10 2008 Remarks on Voronovskaya’s theorem. Zbl 1199.41028Gonska, Heiner; Raşa, Ioan 8 2008 Differences of positive linear operators and the second order modulus. Zbl 1249.41014Gonska, Heiner; Raşa, Ioan 7 2008 A Voronovskaya estimate with second order modulus of smoothness. Zbl 1212.41016Gonska, Heiner; Raşa, Ioan 4 2008 Overiterated linear operators and asymptotic behaviour of semigroups. Zbl 1179.41021Attalienti, Antonio; Rasa, Ioan 3 2008 Steklov operators and their associated semigroups. Zbl 1174.41020Campiti, Michele; Rasa, Ioan; Tacelli, Cristian 2 2008 Steklov operators and semigroups in weighted spaces of continuous real functions. Zbl 1174.41019Campiti, M.; Rasa, I.; Tacelli, C. 2 2008 Shape-preserving properties and asymptotic behaviour of the semigroup generated by the Black–Scholes operator. Zbl 1174.47037Attalienti, Antonio; Rasa, Ioan 1 2008 Over-iterates of Bernstein-Stancu operators. Zbl 1150.41013Gonska, Heiner; Piţul, Paula; Raşa, Ioan 9 2007 A quantitative version of Trotter’s approximation theorem. Zbl 1118.41007Mangino, Elisabetta M.; Raşa, Ioan 9 2007 Total positivity: an application to positive linear operators and to their limiting semigroups. Zbl 1174.41018Attalienti, Antonio; Raşa, Ioan 1 2007 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 28 2006 The limiting semigroup of the Bernstein iterates: degree of convergence. Zbl 1121.41004Gonska, H.; Raşa, I. 22 2006 On genuine Bernstein-Durrmeyer operators. Zbl 1145.41004Gonska, Heiner; Kacsó, Daniela; Raşa, Ioan 16 2006 On differences of positive linear operators. Zbl 1150.41012Gonska, Heiner; Piţul, Paula; Raşa, Ioan 9 2006 Iterated boolean sums of Bernstein and related operator. Zbl 1150.41017Raşa, Ioan 2 2006 Classes of convex functions associated with Bernstein operators of second kind. Zbl 1111.26014Rasa, Ioan 2 2006 On a class of exponential-type operators and their limit semigroups. Zbl 1076.41010Altomare, Francesco; Raşa, Ioan 4 2005 One-dimensional diffusions and approximation. Zbl 1116.47037Rasa, Ioan 2 2005 On some classes of diffusion equations and related approximation problems. Zbl 1077.35026Altomare, Francesco; Rasa, Ioan 2 2005 Some \(C_0\)-semigroups related to polynomial operators. Zbl 1146.47031Mache, Detlef; Rasa, Ioan 1 2005 ...and 28 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 372 Authors 63 Rasa, Ioan 23 Acu, Ana Maria 20 Gupta, Vijay 18 Acar, Tuncer 17 Aral, Ali 14 Jung, Soon-Mo 14 Popa, Dorian 12 Agrawal, Purshottam Narain 11 Gonska, Heinz Herbert 11 Heilmann, Margareta 10 Altomare, Francesco 10 Bardaro, Carlo 10 Mantellini, Ilaria 10 Tachev, Gancho T. 9 Ivan, Mircea Dumitru 9 Leonessa, Vita 9 Onitsuka, Masakazu 8 Abel, Ulrich 8 Brzdęk, Janusz 8 Cappelletti Montano, Mirella 8 Cárdenas-Morales, Daniel 8 Gavrea, Ioan 8 Kajla, Arun 8 Mishra, Vishnu Narayan 7 Campiti, Michele 7 Garrancho, Pedro 7 Păltănea, Radu 7 Wang, Jinrong 6 Birou, Marius Mihai 6 Chu, Yuming 6 El-hady, El-sayed 5 Ansari, Khursheed Jamal 5 Baias, Alina-Ramona 5 Dragomir, Sever Silvestru 5 Gal, Sorin Gheorghe 5 Mahmudov, Nazim Idrisoglu 5 Mursaleen, Mohammad 5 Shen, Yonghong 5 Tacelli, Cristian 4 Anderson, Douglas Robert 4 Draganov, Borislav R. 4 Inoan, Daniela Ioana 4 Mangino, Elisabetta M. 4 Ozarslan, Mehmet Ali 4 Popa, Dumitru 4 Roh, Jaiok 4 Sucu, Sezgin 4 Xu, Tianzhou 4 Xu, Xiaowei 4 Zada, Akbar 3 Abdollahpour, Mohammad Reza 3 Agratini, Octavian 3 Albanese, Angela Anna 3 Ciepliński, Krzysztof 3 Dăianu, Dan M. 3 Deepmala, Vandana 3 Deo, Naokant 3 Erençin, Ayşegül 3 Fukutaka, Ryuma 3 Gandhi, Rajiv B. 3 Goldman, Ron N. 3 Holhoş, Adrian 3 Ịçöz, Gürhan 3 Komisarski, Andrzej 3 Li, Yongjin 3 Miclăuş, Dan 3 Mocanu, Gabriela Raluca 3 Neer, Trapti 3 Pavić, Zlatko 3 Radu, Voichiţa Adriana 3 Rassias, Michael Th. 3 Rassias, Themistocles Michael 3 Ulusoy, Gulsum 3 Varma, Serhan 3 Wang, Chun 3 Zeng, Xiaoming 3 Zhao, Xiangkui 2 Adell, José Antonio 2 Agrawal, Deepika 2 Agrawal, Gunjan 2 Ait-Haddou, Rachid 2 Aktuglu, Huseyin 2 Alzer, Horst 2 Attalienti, Antonio 2 Bahyrycz, Anna 2 Bascanbaz-Tunca, Gulen 2 Baxhaku, Behar 2 Bodur, Murat 2 Bustamante González, Jorge 2 Cannarsa, Piermarco 2 Cătinaş, Teodora 2 Choi, Ginkyu 2 Ciurte, Anca 2 Costarelli, Danilo 2 Deshwal, Sheetal 2 Dhamija, Minakshi 2 El-Fassi, Iz-Iddine 2 Erbay, Hasan 2 Finta, Zoltán 2 Gao, Zhuoyan ...and 272 more Authors all top 5 Cited in 99 Serials 44 Results in Mathematics 31 Applied Mathematics and Computation 29 Journal of Mathematical Analysis and Applications 18 Mediterranean Journal of Mathematics 16 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 15 Journal of Approximation Theory 13 Applied Mathematics Letters 13 Journal of Function Spaces 12 Positivity 12 Constructive Mathematical Analysis 11 Abstract and Applied Analysis 10 Computers & Mathematics with Applications 10 Numerical Functional Analysis and Optimization 10 Journal of Inequalities and Applications 10 Advances in Difference Equations 9 Aequationes Mathematicae 8 Numerical Algorithms 5 Rendiconti del Circolo Matemàtico di Palermo. Serie II 5 Georgian Mathematical Journal 5 Analysis and Mathematical Physics 4 Periodica Mathematica Hungarica 4 Bulletin of the Malaysian Mathematical Sciences Society. 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Second Series 1 Kyungpook Mathematical Journal 1 Mathematica Slovaca 1 Memoirs of the American Mathematical Society 1 Monatshefte für Mathematik 1 Quaestiones Mathematicae 1 Rendiconti del Seminario Matemàtico e Fisico di Milano 1 Siberian Mathematical Journal 1 Zeitschrift für Analysis und ihre Anwendungen 1 Bulletin of the Korean Mathematical Society 1 Computer Aided Geometric Design 1 Constructive Approximation 1 Applications of Mathematics 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. Mathematics 1 Expositiones Mathematicae 1 Applied Mathematics. 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Transaction A: Science 1 Entropy 1 Analysis in Theory and Applications 1 Analysis and Applications (Singapore) 1 Journal of Function Spaces and Applications 1 Fixed Point Theory 1 The Australian Journal of Mathematical Analysis and Applications 1 Banach Journal of Mathematical Analysis 1 Advances in Mathematical Physics 1 Symmetry 1 Bulletin of Mathematical Sciences 1 Journal of Classical Analysis 1 Concrete Operators 1 Chinese Journal of Mathematics 1 Journal of Calculus of Variations 1 International Journal of Applied and Computational Mathematics 1 Advances in Operator Theory 1 Korean Journal of Mathematics 1 Bollettino dell’Unione Matematica Italiana all top 5 Cited in 36 Fields 248 Approximations and expansions (41-XX) 66 Difference and functional equations (39-XX) 65 Operator theory (47-XX) 55 Real functions (26-XX) 52 Ordinary differential equations (34-XX) 21 Partial differential equations (35-XX) 16 Numerical analysis (65-XX) 14 Information and communication theory, circuits (94-XX) 12 Functional analysis (46-XX) 12 Probability theory and stochastic processes (60-XX) 11 Functions of a complex variable (30-XX) 11 Special functions (33-XX) 10 Dynamical systems and ergodic theory (37-XX) 5 Biology and other natural sciences (92-XX) 4 Combinatorics (05-XX) 4 Sequences, series, summability (40-XX) 4 Harmonic analysis on Euclidean spaces (42-XX) 4 Integral equations (45-XX) 3 Linear and multilinear algebra; matrix theory (15-XX) 3 Integral transforms, operational calculus (44-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Convex and discrete geometry (52-XX) 2 General topology (54-XX) 2 Statistics (62-XX) 1 Number theory (11-XX) 1 Field theory and polynomials (12-XX) 1 Associative rings and algebras (16-XX) 1 Category theory; homological algebra (18-XX) 1 \(K\)-theory (19-XX) 1 Group theory and generalizations (20-XX) 1 Potential theory (31-XX) 1 Mechanics of particles and systems (70-XX) 1 Quantum theory (81-XX) 1 Operations research, mathematical programming (90-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Systems theory; control (93-XX) Citations by Year