Serdica Bulgariacae mathematicae publicationes

Volume 19, 1993

Number 1

• Bhattarai, H. N. Join decomposition of certain spaces. (pp. 3-7)
• Khakhanian, V. Kh. ZFI_R+CT is equiconsistent with ZFI_R. (pp. 8-11)
• Madguerova, A. S. A model of time with Walker's definition of instants by events. (pp. 12-23)
• Schuster, R. Geodesic double differential forms, Euler-Poisson-Darboux equations and the Selberg trace formula for hyperbolic space forms. (pp. 24-35)
• Todorova, M. The W language and its applications to theorem proving. (pp. 36-44)
• Chakurov, E., R. Chakurova. A theorem for irreducible matrices with a slightly dominant principal diagonal. (pp. 45-52)
• Kjurkchiev, N., J. Herzberger. On some bounds for polynomial roots obtained when determining the R-order of iterative processes. (pp. 53-58)
• Marinov, P., A. Andreev, Pl. Yalamov. Approximate determination of the rational function of the best restricted approximation in Hausdorff metric. (pp. 59-65)
• Gichev, D. About an algorithm for downloading data into a hypercube multiprocessor with a host processor. (pp. 66-70)
• Zegeling, A. Equivariant unfoldings in the case of symmetry of order 4. (pp. 71-79)
• Maneva, N. Building a partial software environment. (pp. 80-85)

Number 2-3

• Sendov, Bl. The 80th anniversary of Academician Ljubomir Iliev. (pp. 91-97)
• Bibliography of the works of Academican Ljubomir Iliev after 1983. (pp. 98-103)
• Al-Bassam, M. A. Applications of fractional calculus to a class of integro-differential equations. (pp. 104-112)
• Cazacu, C. A., V. Stanciu. Distortion of the level lines of the modulus functions under K-qc mappings. (pp. 113-120)
• Demetrovics, J., L. Rónyai, Hua Nam Son. Equality schemes and equality scheme dependencies in relational databases. (pp. 121-133)
• Demetrovics, J., Vu Duc Thi. On the time complexity of algorithms related to Boyce-Codd normal form. (pp. 134-144)
• Kiliçman, A., B. Fisher. Further results on the non-commutative neutrix product of distributions. (pp. 145-152)
• Loi, M. Physics and mathematics before 1870. (Physique et math\'ematiques avant 1870.) (in French) (pp. 153-160)
• Luh, W. Universal functions and conformal mappings. (pp. 161-166)
• Napalkov, V., M. Solomesh'. Convolution type systems in some spaces of analytic functions. (pp. 167-174)
• Rachev, S. T., G. Samorodnitsky. Option pricing formulae for speculative prices modelled by subordinated stochastic processes. (pp. 175-190)
• Srivastava, H. M. Srinivasa Ramanujan and generalized basic hypergeometric functions. (pp. 191-197)
• Stankovic, B. Asymptotic almost periodic distributions, structural theorem. (pp. 198-203)
• Todorov, P. G. A simple proof of the Bieberbach conjecture. (pp. 204-214)
• Virchenko, N. On some methods of solving mixed boundary value problems. (pp. 215-222)

Number 4

• Trencevski, K. On the strictly parallel planes of the spaces with linear connection. (pp. 223-227)
• Kasandrova, I. M., M. D. Kostova. On a class of multiplier sequences. (pp. 228-233)
• Abujabal, H. A. S., M. A. Khan, M. S. Khan. On commutativity of rings with constraints on subsets. (pp. 234-242)
• Al'sevich, V. V., O. I. Kostyukova, Yu. Kh. Pesheva. Support of the maximum principle for systems with aftereffect and functional constraints. I. (in Russian) (pp. 243-257)
• Alsina, C., G. Mayor, M. S. Tomás, J. Torrens. Subdistributive De Morgan triplets. (pp. 258-266)
• Guha, N., U. C. De. On K-contact manifolds. (pp. 267-272)
• Hristov, M. J. Curvature identities for almost contact metric manifolds of Hermitian type. (pp. 273-286)
• Manev, M., K. Gribachev. Contactly conformal transformations of almost contact manifolds with B-metric. (pp. 287-299)
• Bajpai, S. D. Generating function and semi-orthogonal properties of a new class of polynomials. (pp. 300-305)