Serdica Bulgariacae mathematicae publicationes

Volume 17, 1991

Number 1

• Dragomir, S., R. Grimaldi. Cauchy-Riemann submanifolds in locally conformal Kaehler manifolds. III. (pp. 3-14)
• Volkov, L.G. On the realization and convergence of iterative methods for the solution of difference schemes for equations of nonlinear elasticity. (in Russian) (pp. 15-24)
• Abujabal, H. A. S. Commutativity conditions of one-sided s-unital rings with certain constraints. (pp. 25-34)
• Tripathi, M. M. Non-existence of proper semi-invariant submanifolds of an almost r-paracontact Riemannian manifold of P-Sasakian type. (pp. 35-38).
• Schott, D., S. Kostadinov, G. Petrov, M. Kapitanova. Local properties of orthogonally reducible linear operators. (pp. 39-50)
• Bajpai, S. D., A. Y. Al-Hawaj. Some double integrals and Fourier series for Fox's H-function of two variables. (pp. 51-58)
• Jassim, S. K. On Bernstein polynomials for Riemann integrable functions. (pp. 59-66)
• Slavtchova, M. N., N. M. Yanev. Non-critical Bellman-Harris branching processes with state-dependent immigration. (pp. 67-79)

Number 2-3

• Petunin, Yu. I., N. G. Semejko. Random cap processes and generalized Wicksell problem on the surface of a sphere. (pp. 81-91)
• Kolikov, K. Kh. Fundamental ideal and Jacobson radical of crossed products. (in Russian) (pp. 92-98)
• Georgiev, N. N. On a nonlinear differential system of third order. (in Russian) (pp. 99-103)
• Mihovski, S. V. Central algebraic elements in strictly graded rings. (in Russian) (pp. 104-110)
• El Tarazi, M. N., A. A. Karaballi. Direct nonperiodic and periodic cubic splines. (pp. 111-119)
• Papageorgiou, N. S. Optimal control of nonlinear evolution equations. (pp. 120-126)
• Ipate, D. M., M. M. Choban. Approximation of multivalued mappings by continuous mappings. (in Russian) (pp. 127-136)
• Fukui, M., C. Udriste. On the rank of a curvature tensor of a Finsler manifold. (pp. 137-138)
• Kjurkchiev, N. On the orders of convergence of some classes of iteration methods. (Uber die Konvergenzordnungen einiger Klassen von Iterationsverfahren.) (in German) (pp. 139-143)
• Slavtchova, M. N. Limit theorems for multitype Bellman-Harris branching processes with state dependent immigration. (pp. 144-156)
• Doitchinov, B. D., V. I. Malyhin. On compactly determined spaces. (pp. 157-160)
• Tachev, G. T. A converse theorem for the best algebraic approximation in L_p[-1,1] (0 < p < 1). (pp. 161-166)
• Zashev, J. A type free abstract structure for the recursion theory. (pp. 167-176)
• Shawnm, A.-K. Estimation of a single missing value with fixed effects experimental designs. (pp. 177-184)
• Shawnm, A.-K. Estimation of multiple missing values in fixed effects experimental designs. (pp. 185-190)

Number 4

• Mohemed, M. A. Traffic signal control of a network system. (pp. 191-196).
• Gamarnik, D. Minimallity of the group Autohomeom(C). (pp. 197-201)
• Palagachev, D. K. An oblique derivative problem for second order quasilinear parabolic operators. II. (pp. 202-211)
• Staikova, M. T., K. I. Gribachev, D. G. Mekerov. Riemannian P-manifolds of constant sectional curvatures. (pp. 212-219)
• Apostolova, L. N. On exactness of RC-complexes of RC-structures. (in Russian, English summary) (pp. 220-227).
• Gichev, T. Approximation of a semi-infinite n-person game. (in Russian) (pp. 228-232)
• Zhelev, Zh. J. Quasisimilarity of N-tuples of commmuting operators. (pp. 233-240)
• Anbuchelvi, V., R. Parvatham. Jack's lemma for a vector valued function. (pp. 241-242)
• Rastogi, S. C. A note on n-fundamental tensors of a hypersurface of a Riemannian space. (pp. 243-247)
• Kostova, A. V. An exact estimate for approximation of a class of convex functions by Baskakov operators in L₁. (pp. 248-254).
• Choban, M. M., H. Attia. On the Baire-category method in dimensional theory. (pp. 255-263)
• Iliev, G. L. Monotone convergence of an iteration process of Newton's type. (pp. 264-269)