Vol. 56 No. 3 (2004)

Published: 25.03.2004

Anniversaries

Dmytro Yakovych Petryna (on his 70 th birthday)

291-292
- PDF (Ukrainian)

Research articles

Creative Contribution of D. Ya. Petrina to the Development of Contemporary Mathematical Physics

V. I. Gerasimenko, P. V. Malyshev

293-308
- PDF (Ukrainian)
- Springer
BCS Model Hamiltonian of the Theory of Superconductivity as a Quadratic Form

D. Ya. Petrina

309-338
- PDF
- Springer
On the Optimal Coefficient of Efficiency of a Semi-Markov System in the Scheme of Phase Lumping

N. G. Vovkodav, L. N. Shlepakov

339-345
- PDF (Russian)
- Springer
On Permutable Congruences on Antigroups of Finite Rank

V. D. Derech

346-351
- PDF (Ukrainian)
- Springer
Coconvex Approximation of Functions with More than One Inflection Point

H. A. Dzyubenko, V. D. Zalizko

352-365
- PDF (Ukrainian)
- Springer
Nevanlinna–Pick Problem for Stieltjes Matrix Functions

Yu. M. Dyukarev

366-380
- PDF (Russian)
- Springer
Boundary Functionals of a Semicontinuous Process with Independent Increments on an Interval

T. V. Kadankova

381-398
- PDF (Russian)
- Springer
Euler Approximations of Solutions of Abstract Equations and Their Applications in the Theory of Semigroups

Yu. S. Mishura, H. M. Shevchenko

399-410
- PDF (Ukrainian)
- Springer
On the Discreteness of the Structural Space of Weakly Completely Continuous Banach Algebras

G. S. Mustafaev

411-418
- PDF (Russian)
- Springer
On the Decomposition of an Operator into a Sum of Four Idempotents

V. I. Rabanovych

419-424
- PDF (Ukrainian)
- Springer

Short communications

Interpolation Sequences for the Class of Functions of Finite η-Type Analytic in the Unit Disk

B. V. Vynnyts’kyi, I. B. Sheparovych

425-430
- PDF (Ukrainian)
- Springer