# zbMATH — the first resource for mathematics

## Preprint. “Babeş-Bolyai” University. Faculty of Mathematics and Physics. Research Seminars

 Short Title: Prepr., “Babeş-Bolyai” Univ., Fac. Math. Phys., Res. Semin. Publisher: “Babeş-Bolyai” University, Faculty of Mathematics and Physics, Cluj-Napoca Predecessor: Preprint. “Babeş-Bolyai” University. Faculty of Mathematics. Research Seminars Successor: “Babeş-Bolyai” University. Faculty of Mathematics and Computer Science. Research Seminars. Preprint Comments: No longer indexed
 Documents Indexed: 483 Publications (1985–1991)
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#### Latest Issues

 1991, No. 7 (1991) 1991, No. 3 (1991) 1991, No. 2 (1991) 1990, No. 7 (1990) 1990, No. 3 (1990) 1989, No. 10 (1989) 1989, No. 9 (1989) 1989, No. 8 (1989) 1989, No. 7 (1989) 1989, No. 6 (1989) 1989, No. 3 (1989) 1989, No. 2 (1989) 1989, No. 1 (1989) 1988, No. 10 (1988) 1988, No. 9 (1988) 1988, No. 8 (1988) 1988, No. 7 (1988) 1988, No. 6 (1988) 1988, No. 5 (1988) 1988, No. 3 (1988) 1988, No. 2 (1988) 1988, No. 1 (1988) 1987, No. 8 (1987) 1987, No. 6 (1987) 1987, No. 1 (1987) 1986, No. 9 (1986) 1986, No. 4 (1986) 1986, No. 3 (1986) 1985, No. 5 (1985)
all top 5

#### Authors

 12 Toader, Gheorghe 11 Kassay, Gábor 9 Kolumbán, József 9 Muntean, Ioan Lucian 9 Rus, Ioan A. 8 Dragomir, Sever Silvestru 8 Mitrea, Alexandru-Ioan 8 Precup, Radu 8 Tudosie, Constantin 7 Balazs, Martin 7 Diaconu, Adrian-Viorel 7 Enghiş, Pavel 7 Goldner, Gavrilă 7 Lungu, Nicolaie 7 Mocanu, Petru T. 7 Păvăloiu, Ion 7 Trif, Damian 6 Andrica, Dorin 6 Anisiu, Mira-Cristiana 6 Brădeanu, Doina 6 Chiorean, Ioana 6 Coman, Gheorghe 6 Mureşan, Marian 6 Mustăţa, Costică 6 Pál, Árpád 6 Vasiu, Angela 6 Vornicescu, Neculae 5 Dăianu, Dan M. 5 Lupşa, Liana 5 Mureşan, Anton S. 5 Pascu, Nicolae N. 5 Petrila, Titus 5 Potra, Teodor 5 Sándor, József 4 Duca, Dorel I. 4 Duca, Eugenia C. 4 Gal, Sorin Gheorghe 4 Gavrea, Ioan 4 Gheorghiu, Călin Ioan 4 Groze, Sever 4 Mioc, Vasile 4 Rasa, Ioan 4 Smaranda, Dumitru 4 Stancu-Minasian, Ioan M. 4 Tarina, Marian 3 Anisiu, Valeriu 3 Balogh, Zoltan 3 Bradeanu, Petre 3 Caraman, Petru 3 Corovei, Ilie 3 Crstici, Borislav D. 3 Giurgiu, Ioachim 3 Ivan, Mircea Dumitru 3 Jacob, Caius 3 Kása, Zoltán 3 Mihoc, Ion 3 Mureşan, Viorica 3 Păltănea, Radu 3 Pečarić, Josip 3 Petruşel, Adrian 3 Popoviciu, Elena 3 Postolică, Vasile 3 Scheiber, Ernest 3 Ţâmbulea, Leon 3 Teodoru, Georgeta 3 Vescan, Robert T. 2 Atanasiu, Gheorghe 2 Babescu, Gheorghe 2 Badea, Catalin 2 Berinde, Vasile 2 Blaga, Lucia Rodica 2 Boian, Florian Mircea 2 Boicescu, Vlad 2 Borcea, Veronica-Teodora 2 Breckner, Wolfgang W. 2 Buhăescu, Toader T. 2 Calugareanu, Grigore Dumitru jun. 2 Câmpian, Maria 2 Câmpian, Vasile 2 Cobzaş, Ştefan 2 Coroian, Lia 2 Covaci, Rodica 2 Davideanu, Cătălina 2 Frenţiu, Militon 2 Ghinea, Ioan 2 Ionescu, Nicoleta M. 2 Ivan, Gheorghe 2 Kiss, Elemér 2 Lungu, Nicolae 2 Maksay, Stefan I. 2 Mare, Liviu 2 Marinca, Vasile 2 Marinescu, Daniela 2 Marusciac, Ioan 2 Micula, Gheorghe 2 Moldoveanu, Silvia 2 Neagu, Alexandru C. 2 Negoescu, Nicoleta 2 Obădeanu, V. V. 2 Opriş, Gheorghe ...and 154 more Authors
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#### Fields

 67 Numerical analysis (65-XX) 54 Operator theory (47-XX) 50 Ordinary differential equations (34-XX) 42 Real functions (26-XX) 41 General topology (54-XX) 39 Differential geometry (53-XX) 35 Functional analysis (46-XX) 33 Operations research, mathematical programming (90-XX) 32 Approximations and expansions (41-XX) 27 Partial differential equations (35-XX) 25 Calculus of variations and optimal control; optimization (49-XX) 20 Functions of a complex variable (30-XX) 19 Fluid mechanics (76-XX) 14 Group theory and generalizations (20-XX) 12 Mechanics of particles and systems (70-XX) 11 Order, lattices, ordered algebraic structures (06-XX) 11 Computer science (68-XX) 10 Integral equations (45-XX) 9 Geometry (51-XX) 9 Global analysis, analysis on manifolds (58-XX) 8 Commutative algebra (13-XX) 7 Mathematical logic and foundations (03-XX) 7 Linear and multilinear algebra; matrix theory (15-XX) 7 Associative rings and algebras (16-XX) 7 Probability theory and stochastic processes (60-XX) 6 Category theory; homological algebra (18-XX) 6 Difference and functional equations (39-XX) 5 History and biography (01-XX) 5 Topological groups, Lie groups (22-XX) 4 Field theory and polynomials (12-XX) 4 Convex and discrete geometry (52-XX) 4 Manifolds and cell complexes (57-XX) 4 Biology and other natural sciences (92-XX) 4 Information and communication theory, circuits (94-XX) 3 Algebraic geometry (14-XX) 3 Sequences, series, summability (40-XX) 3 Algebraic topology (55-XX) 3 Classical thermodynamics, heat transfer (80-XX) 2 General algebraic systems (08-XX) 2 Number theory (11-XX) 2 Statistics (62-XX) 2 Mechanics of deformable solids (74-XX) 2 Relativity and gravitational theory (83-XX) 2 Systems theory; control (93-XX) 1 Combinatorics (05-XX) 1 Measure and integration (28-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Special functions (33-XX) 1 Dynamical systems and ergodic theory (37-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Optics, electromagnetic theory (78-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Astronomy and astrophysics (85-XX)

#### Citations contained in zbMATH Open

52 Publications have been cited 92 times in 82 Documents Cited by Year
On an inequality of Godunova-Levin and some refinements of Jensen integral inequality. Zbl 0678.26009
Pečarić, Josip E.; Dragomir, Sever S.
1989
Some observations on intuitionistic fuzzy relations. Zbl 0674.03018
1989
On some exponential means. Zbl 0752.26010
1990
A note on Jessen’s inequality. Zbl 0661.26008
Raşa, I.
1988
Jensen’s and Jessen’s inequality, convexity-preserving and approximating polynomial operators and Korovkin’s theorem. Zbl 0681.26008
1986
Positive solutions of the initial value problem for an integral equation modeling infectious disease. Zbl 0762.45003
1991
An algorithm for computing the first efficient point of an integer linear multiobjective program. Zbl 0694.90088
Marinescu, Daniela
1987
An exponential mean. Zbl 0655.26012
1988
Pseudo-Riemannian recurrent manifolds with almost constant curvature. Zbl 0663.53020
Smaranda, D.
1988
Invariant transformations of p,q-convex sequences. Zbl 0762.40001
1991
Extension of Hölder functions and some related problems of best approximation. Zbl 0765.41024
Mustăţa, Costică
1991
Some problems in differential equations connected with hydraulic engineering. Zbl 0695.34054
Halanay, A.
1986
A product formula for optimal control of variational inequalities. Zbl 0696.49021
Barbu, Viorel
1986
Nonlinear boundary value problems for infinite systems of second-order functional differential equations. Zbl 0704.34022
1988
Implicit functions and variational inequalities for monotone mappings. Zbl 0724.47027
Kassay, G.; Kolumbán, I.
1989
Generalized pseudofractional max-min problems. Zbl 0655.90083
Stancu-Minasian, I. M.; Tigan, S.
1988
The stochastic linear-fractional max-min problem. Zbl 0658.90070
Stancu-Minasian, I. M.; Ţigan, Ş.
1987
Fredholm-Volterra integral equations and Maia’s theorem. Zbl 0659.45003
1988
Implicit function theorems for monotone mappings. Zbl 0664.46045
Kassay, G.; Kolumbán, I.
1988
Complete $$(1+\theta)$$-valued Łukasiewicz-Moisil algebras. Zbl 0677.03044
Iorgulescu, Afrodita
1986
Abelian groups with continuous lattice of subgroups. Zbl 0678.20033
Benabdallah, Khalid; Călugăreanu, Grigore
1986
A multiplier rule for constrained optimization problems containing state and control variables. Zbl 0679.90059
Breckner, Wolfgang W.; Kolumbán, Iosif
1987
A note on a fuzzy logic. Zbl 0681.03010
Dumitrescu, D.
1988
Alpha-convex integral operator and starlike functions of order beta. Zbl 0681.30006
Mocanu, Petru T.
1989
Inverse of Čebyšev’s inequality. Zbl 0757.26019
1985
A fixed point theorem of Maia type in K-metric spaces. Zbl 0782.54036
Berinde, Vasile
1991
Extensions of some mean value theorems. Zbl 0763.26005
Muntean, Ioan
1991
On a class of first-order differential subordinations. Zbl 0766.30017
Mocanu, Petru T.
1991
Boundary element Galerkin method for a nonlinear boundary value problem. Zbl 0768.65074
Potra, Teodor
1991
Support functionals of the unit ball in Banach spaces of bounded functions. Zbl 0744.46011
Cobzaş, S.
1986
On the Knaster-Kuratowski-Mazurkiewicz and Ky Fan’s theorem. Zbl 0769.54051
Kassay, G.; Kolumbán, I.
1990
An existence theorem of optimal controls. Zbl 0768.49002
Vornicescu, Neculae
1990
Nonlinear two point boundary value problems. Zbl 0747.34016
Petracovici, Boris
1989
A delay integral equation from biomathematics. Zbl 0749.45004
Rus, Ioan A.
1989
Topological transversality, perturbation theorems and second order differential equations. Zbl 0746.47033
1989
Contractive mappings in ordered spaces. (Applications contractives dans les espaces ordonnés.) Zbl 0755.47045
Voicu, Florica
1989
Computing the $$d$$-complexity of words. Zbl 0796.68130
Kása, Z.
1989
Two functional identities characterizing polynomials. Zbl 0683.39006
Kannappan, PL.; Crstici, B.
1989
A fixed point theorem of Maia type in syntopogenous spaces. Zbl 0686.54029
1988
Fractional goal programming with inexact data. Zbl 0692.90090
Ţigan, Ştefan; Stancu-Minasian, I. M.
1989
Inexact mathematical programming. Zbl 0694.90085
Stancu-Minasian, I. M.; Ţigan, Ştefan
1987
The unbounded divergence of some product quadrature processes. Zbl 0695.41013
Mitrea, Alexandru I.
1989
A bang-bang type result for nonlinear systems. Zbl 0696.49043
Vornicescu, Neculae
1986
Existence results for the efficient points in locally convex spaces ordered by supernormal cones and conically bounded sets. Zbl 0701.46006
Pestalică, Vasile
1988
On the Hausdorff dimension of symmetric perfect sets. Zbl 0722.28002
Anisiu, Valeriu
1989
On Cauchy-Buniakowski-Schwarz inequality for isotonic functionals. Zbl 0726.26015
Dragomir, Sever Silvestru
1989
On the convexity of order two of functions. Zbl 0653.26010
1987
On starlike images by Alexander integral. Zbl 0655.30008
Mocanu, Petru T.
1987
Approximation of real-valued functions by monotone sequences of polynomials. Zbl 0655.41007
Gal, Sorin Gh.
1988
Some remarks on the equaion $$f(X)=A$$ in $$M_ n({\mathbb{C}})$$ and applications. Zbl 0657.15012
Rădulescu, Sorin; Andrica, Dorin
1988
On harmonic maps between semi-Riemannian manifolds. Zbl 0666.53034
Bejan, Cornelia-Livia
1988
Sur une équation aux dérivées partielles. (On a partial differential equation). Zbl 0666.35053
Pavel, Paraschiva
1988
Positive solutions of the initial value problem for an integral equation modeling infectious disease. Zbl 0762.45003
1991
Invariant transformations of p,q-convex sequences. Zbl 0762.40001
1991
Extension of Hölder functions and some related problems of best approximation. Zbl 0765.41024
Mustăţa, Costică
1991
A fixed point theorem of Maia type in K-metric spaces. Zbl 0782.54036
Berinde, Vasile
1991
Extensions of some mean value theorems. Zbl 0763.26005
Muntean, Ioan
1991
On a class of first-order differential subordinations. Zbl 0766.30017
Mocanu, Petru T.
1991
Boundary element Galerkin method for a nonlinear boundary value problem. Zbl 0768.65074
Potra, Teodor
1991
On some exponential means. Zbl 0752.26010
1990
On the Knaster-Kuratowski-Mazurkiewicz and Ky Fan’s theorem. Zbl 0769.54051
Kassay, G.; Kolumbán, I.
1990
An existence theorem of optimal controls. Zbl 0768.49002
Vornicescu, Neculae
1990
On an inequality of Godunova-Levin and some refinements of Jensen integral inequality. Zbl 0678.26009
Pečarić, Josip E.; Dragomir, Sever S.
1989
Some observations on intuitionistic fuzzy relations. Zbl 0674.03018
1989
Implicit functions and variational inequalities for monotone mappings. Zbl 0724.47027
Kassay, G.; Kolumbán, I.
1989
Alpha-convex integral operator and starlike functions of order beta. Zbl 0681.30006
Mocanu, Petru T.
1989
Nonlinear two point boundary value problems. Zbl 0747.34016
Petracovici, Boris
1989
A delay integral equation from biomathematics. Zbl 0749.45004
Rus, Ioan A.
1989
Topological transversality, perturbation theorems and second order differential equations. Zbl 0746.47033
1989
Contractive mappings in ordered spaces. (Applications contractives dans les espaces ordonnés.) Zbl 0755.47045
Voicu, Florica
1989
Computing the $$d$$-complexity of words. Zbl 0796.68130
Kása, Z.
1989
Two functional identities characterizing polynomials. Zbl 0683.39006
Kannappan, PL.; Crstici, B.
1989
Fractional goal programming with inexact data. Zbl 0692.90090
Ţigan, Ştefan; Stancu-Minasian, I. M.
1989
The unbounded divergence of some product quadrature processes. Zbl 0695.41013
Mitrea, Alexandru I.
1989
On the Hausdorff dimension of symmetric perfect sets. Zbl 0722.28002
Anisiu, Valeriu
1989
On Cauchy-Buniakowski-Schwarz inequality for isotonic functionals. Zbl 0726.26015
Dragomir, Sever Silvestru
1989
A note on Jessen’s inequality. Zbl 0661.26008
Raşa, I.
1988
An exponential mean. Zbl 0655.26012
1988
Pseudo-Riemannian recurrent manifolds with almost constant curvature. Zbl 0663.53020
Smaranda, D.
1988
Nonlinear boundary value problems for infinite systems of second-order functional differential equations. Zbl 0704.34022
1988
Generalized pseudofractional max-min problems. Zbl 0655.90083
Stancu-Minasian, I. M.; Tigan, S.
1988
Fredholm-Volterra integral equations and Maia’s theorem. Zbl 0659.45003
1988
Implicit function theorems for monotone mappings. Zbl 0664.46045
Kassay, G.; Kolumbán, I.
1988
A note on a fuzzy logic. Zbl 0681.03010
Dumitrescu, D.
1988
A fixed point theorem of Maia type in syntopogenous spaces. Zbl 0686.54029
1988
Existence results for the efficient points in locally convex spaces ordered by supernormal cones and conically bounded sets. Zbl 0701.46006
Pestalică, Vasile
1988
Approximation of real-valued functions by monotone sequences of polynomials. Zbl 0655.41007
Gal, Sorin Gh.
1988
Some remarks on the equaion $$f(X)=A$$ in $$M_ n({\mathbb{C}})$$ and applications. Zbl 0657.15012
Rădulescu, Sorin; Andrica, Dorin
1988
On harmonic maps between semi-Riemannian manifolds. Zbl 0666.53034
Bejan, Cornelia-Livia
1988
Sur une équation aux dérivées partielles. (On a partial differential equation). Zbl 0666.35053
Pavel, Paraschiva
1988
An algorithm for computing the first efficient point of an integer linear multiobjective program. Zbl 0694.90088
Marinescu, Daniela
1987
The stochastic linear-fractional max-min problem. Zbl 0658.90070
Stancu-Minasian, I. M.; Ţigan, Ş.
1987
A multiplier rule for constrained optimization problems containing state and control variables. Zbl 0679.90059
Breckner, Wolfgang W.; Kolumbán, Iosif
1987
Inexact mathematical programming. Zbl 0694.90085
Stancu-Minasian, I. M.; Ţigan, Ştefan
1987
On the convexity of order two of functions. Zbl 0653.26010
1987
On starlike images by Alexander integral. Zbl 0655.30008
Mocanu, Petru T.
1987
Jensen’s and Jessen’s inequality, convexity-preserving and approximating polynomial operators and Korovkin’s theorem. Zbl 0681.26008
1986
Some problems in differential equations connected with hydraulic engineering. Zbl 0695.34054
Halanay, A.
1986
A product formula for optimal control of variational inequalities. Zbl 0696.49021
Barbu, Viorel
1986
Complete $$(1+\theta)$$-valued Łukasiewicz-Moisil algebras. Zbl 0677.03044
Iorgulescu, Afrodita
1986
Abelian groups with continuous lattice of subgroups. Zbl 0678.20033
Benabdallah, Khalid; Călugăreanu, Grigore
1986
Support functionals of the unit ball in Banach spaces of bounded functions. Zbl 0744.46011
Cobzaş, S.
1986
A bang-bang type result for nonlinear systems. Zbl 0696.49043
Vornicescu, Neculae
1986
Inverse of Čebyšev’s inequality. Zbl 0757.26019
1985
all top 5