Mathematica Balkanica

Mathematica Balkanica

Vol. 5 (1991), Fasc. 1

Nguen Xuan My. On Lindenmayer Systems and String Adjunct Schemes	3
Miodrag Rashkovich, Radosav Dordevich. Finite Compactness Theorem for Biprobability Logics	12
Boris Lavrich. Orthomorphisms on Riesz Spaces of Riesz Space-Valued Functions	15
Pando Gr. Georgiev. On the Residuality of the Set of Norms Having Mazur's Intersection Property	20
Dimiter P. Dryanov. Quadrature Formulae for Entire Functions with 2-Periodic Data	27
A. Kurusa. Translation Invariant Radon Transforms	40
Vasil G. Angelov. A Coincidence Theorem in Uniform Spaces and Applications	47
Mariana D. Beleva. Controlled Wiener Process by External Interventions Maximizing the Average Time until Reaching a Level	66
G. S. Lingappaiah. Distribution of the Ratio of Geometric Mean to Arithmetic Mean in a Sample from a Two-Piece Double Exponential Distribution	76

Vol. 5 (1991), Fasc. 2

Shi Mingquan. Some Results of the π-Semigroups	81
Miroslav Pavlovich. On the Complex Uniform Convexity of Quasi-Normed Spaces	92
S. M. Mazhar. Approximation by Positive Operators of Infinite Intervals	99
Cao Hui-Zhong. The Asymptotic Formulas Related to Exponents in Factoring Integers	105
Christian Jansson. Rigorous Sensitivity Analysis for Real Symmetric Matrices with Uncertain Data	109
D. P. Mishev. Oscillation of the Solutions of Neutral Type Hyperbolic Differential Equations	121
T. N. T. Goodman, A. Sharma. A Bernstein Type Operator on the Simplex	129
Fioravante Patrone, Julian Revalski. Characterizations of Tikhonov Well-Posedness for Preorders	146
Natasha Bozovic. On Some Properties of Universal Groups	156
I. D. Cherkasov. Transformation of a One-Dimensional Diffusion Process into a Wiener Process by Means of Random Change of Phase Space	162

Vol. 5 (1991), Fasc. 3

R. P. Ivanov. On Viable Solutions of Feedback Controlled System	177
V. I. Zhukovski, M. S. Radjef. Quasi-Movements and Their Properties (in French)	182
Shyam Kalla, Leda Galue, Virginia Kiryakova. Some Expansions Related to a Family on Generalized Radiation Integrals	190
Shi Mingquan. π₁-Semigroup	203
I. M. Conte, I. I. Slavov. Well-Posedness of an Optimal Control Problem with a Singular Perturbation and Integral Constraints	212
E. M. Galeev. Bernstein Diameters for the Classes of Periodic Functions of Several Variables	229
Aristides Katavolos, Nikos Papanastassiou. Order Convergence in Operator Algebras	245
Ch. G. Massouros. Constructions of Hyperfields	250
D. S. Mitrinovich, J. E. Peckarich. On a Problem of Sendov Involving an Integral Inequality	258
Georgi I. Chobanov. Non-Zero Solutions for a Homogeneous Semilinear Elliptic Equation	261

Vol. 5 (1991), Fasc. 4

Sever S. Dragomir. Best Approximation in Linear Spaces Endowed with Subinner Product	271
Hoang Van Lai. Splines and Numerical Solutions with an Accuracy 0(h3) for a Hyperbolic Differential-Integral Equation	279
Husein Bor, M. Ali Sarigol. Absolute Summability Factors of Infinite Series	297
Zbigniew Olszak. On Conformally Flat Parakahlerian Manifolds	302
Georgi Chobanov, Ivan Chobanov. Affine and Rigid Motions in Complex Standard Vector Spaces	308
Michael I. Gil. Estimate for Norm of Solutions of Nonautonomous Equations in Hilbert Space	341
N. K. Ribar ska, Ts. Y. Tsachev, M. I. Krastanov. On the General Mountain Pass Principle of Ghoussoub-Preiss	350
Janusz J. Charatonik. Conditions Related to Selectibility	359
Zhen Wang, Ji Chen. Generalization of Ky Fan Inequality	373

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