# Scientific publications of the Ivan Franko National University of Lviv

### Visnyk of the Lviv University. Series Mechanics and Mathematics

 Mathematics
 BUGRIY Mykola ABOUT SOME OPTIMIZATION'S PROBLEM OF THE EXTENDED PORTFOLIO Details DOLYNYUK Myroslava ON THE REGULAR GROWTH COMPOSITION OF A POSITIVE DIRICHLET SERIES AND INCREASING FUNCTIONS Details DOMANSKA Olena SYSTEMS OF ELLIPTIC VARIATIONAL INEQUALITIES WITH ANISOTROPIC NONLINEARITY Details ZHERNOVYI Yuriy ERGODIC DISTRIBUTIONS FOR CERTAIN MODIFICATIONS OF THE M/M/1/m QUEUEING SYSTEM Details ZERNOV Oleksandr, KUZINA Yuliya QUALITATIVE INVESTIGATION OF SOME SINGULAR CAUCHY PROBLEM Details IVANCHOV Mykola, VLASOV Vitaliy AN INVERSE PROBLEM FOR A WEAKLY DEGENERATE TWO-DIMENSIONAL HEAT EQUATION Details LAVRENYUK Serhij, TORHAN Halyna AN INITIAL BOUNDARY VALUE PROBLEM FOR THE PLATE TYPE EQUATION Details MAHOLA Yaroslav, SHEREMETA Myroslav CLOSE-TO-CONVEXITY OF ENTIRE SOLUTION OF A LINEAR DIFFERENTIAL EQUATION WITH POLYNOMIAL COEFFICIENTS Details PRATS'OVYTYI Mykola, PANASENKO Oleksii DIFFERENTIAL AND FRACTAL PROPERTIES OF THE CLASS OF SELF-AFFINE FUNCTIONS Details SALISH Nazarii VECTOR MOVING AVERAGE MODELS Details TORHAN Halyna THE INITIAL BOUNDARY VALUE PROBLEM FOR A NONLINEAR PARABOLIC EQUATION OF THE FOUR ORDER Details LUHOVA Lyubomyra, SHEREMETA Myroslav ON POLYTERMED POWER ASYMPTOTIC OF THE LOGARITHM OF MAXIMAL TERM FOR ENTIRE DIRICHLET SERIES Details MAN'KO Stepan FOURTH ORDER DIFFERENTIAL OPERATORS WITH DISTRIBUTIONS IN COEFFICIENTS Details MULYAVA Îksana, SHEREMETA Myroslav ON THE BEHAVIOUR OF PARTIAL SUMS ZEROS OF THE POWER DEVELOPMENT OF AN ENTIRE FUNCTION IN THE TERMS OF CONVERGENCE CLASSES Details NESTERUK Volodymyr ON NONDEGENERACY OF TATE PRODUCT FOR CURVES OVER PSEUDOFINITE FIELDS Details NECHEPURENKO Maksym, TORHAN Halyna MIXED PROBLEM FOR A STRONG NONLINEAR EVOLUTION SYSTEM IN AN UNBOUNDED DOMAIN Details NYKYFORCHYN Oleh, MYKYTSEY Oksana CONJUGATE MEASURES ON SEMILATTICES Details OVCHAR ²hor, SKASKIV Oleh ON THE BOREL TYPE THEOREM FOR ENTIRE DIRICHLET SERIES WITH NONMONOTONOUS EXPONENTS Details PAROLYA Nestor, YELEJKO Yaroslav KILLED MARKOV DECISION PROCESSES ON FINITE TIME INTERVAL FOR FINITE MODELS Details SAVCHENKO Aleksandr FUNCTORS AND FUZZY ULTRAMETRICS Details SYDORENKO Yuriy A CONSTRUCTIVE METHOD OF FINDING A SCATTERING OPERATOR FOR NON-STATIONARY HYPERBOLIC SYSTEM OF EQUATIONS Details BODNAR Taras OPTIMAL INVESTMENT PORTFOLIO FOR DIFFERENT TYPES OF ASSET RETURNS DISTRIBUTION Details BRYDUN Andriy HOLOMORPHIC FUNCTIONS OF FINITE $\lambda$-TYPE IN A HALF-STRIP Details BUHRII Oleh INITIAL-VALUE PROBLEM FOR NONLINEAR PARABOLIC VARIATIONAL INEQUALITY IN UNBOUNDED WITH RESPECT TO THE SPACE VARIABLES DOMAIN Details VOLOKH Oleksandr ON ENTIRE FUNCTIONS WITH $p$-VALENT DERIVATIVES IN THE UNIT DISK Details HABRUSIEV Hryhorii CONSTRUCTION OF THE APPROXIMATE SOLUTION OF THE FIRST KIND FRENDHOLM-TYPE EQUATION IN SOME CONTACT TASKS OF THE ELASTIC THEORY Details GOLOVATY Yurij, HRABCHAK Hennadij ASYMPTOTICS OF SPECTRUM OF STURM-LIOUVILLE OPERATOR ON NETWORKS WITH PERTURBED DENSITY Details HRYNTSIV Nadiya AN INVERSE PROBLEM FOR A STRONGLY DEGENERATE PARABOLIC EQUATION IN A DOMAIN WITH FREE BOUNDARIES Details DOMANSKA Olena NONLINEAR ELLIPTIC EQUATIONS IN QUASICYLINDRICAL DOMAIN Details YELEJKO Yaroslav, KYRYCHYNSKA Iryna, OKHRIN Ostap ASYMPTOTIC BEHAVIOUR OF THE S-STOPPED BRANCHING PROCESSES WITH COUNTABLE STATE SPACE Details ZHERNOVYI Yuriy STATISTICAL-EQUILIBRIUM STATE PROBABILITIES DISTRIBUTION FOR THE SINGLE-SERVER CLOSED QUEUEING SYSTEMS Details ZABOLOTSKYY Òaras PROPERTIES OF COUNTABLE MATRIX MEASURES Details ZELISKO Mykhaylo MODIFICATION OF GENERALIZED ORDER AND AS APPLICATION Details YONYK Liliya GROUPS WITH MANY $A\check C$-subgroups or $\check CA$-subgroups Details KORKUNA Olesya, LAVRENIUK Serhiy ON A SUPPORT OF A SOLUTION CAUCHY PROBLEM FOR THE NONLINEAR $2b$-PARABOLIC EQUATION Details KSHANOVSKYY Ivan ON THE ANALYTIC IN PUNCTURED DISCS FUNCTIONS WITH BOUNDED NEVANLINNA CHARACTERISTIC Details LOPUSHANSKA Halyna GENERALIZED SOLUTIONS TO SEMILINEAR ELLIPTIC EQUATION WITH STRONG POWER SINGULARITIES AT FRONTIER Details LUHOVA Liubomyra ON THREE-TERM POWER ASYMPTOTIC FOR THE LOGARITHM OF THE MAXIMAL TERM OF ENTIRE DIRICHLET SERIES Details MULYAVA Oksana, SHEREMETA Myroslav ON THE BELONGING OF DIRICHLET SERIES ABSOLUTELY CONVERGENT IN HALF-PLANE TO A CONVERGENCE CLASS Details NECHEPURENKO Maksym THE MIXED PROBLEM FOR A NONLINEAR COUPLED EVOLUTION SYSTEM IN A BOUNDED DOMAIN Details PYRCH Nazar ON ISOMORPHISMS OF THE FREE PARATOPOLOGICAL GROUPS AND FREE HOMOGENEOUS SPACES I Details SNITKO Halyna DETERMINATION OF UNKNOWN MULTIPLIER IN THE COEFFICIENT AT THE FIRST DERIVATIVE IN A PARABOLIC EQUATION IN A FREE BOUNDARY DOMAIN Details TORHAN Halyna MIXED PROBLEM FOR EIDELMAN TYPE EVOLUTION EQUATION IN THE UNBOUNDED REGION Details FEDUS Ulyana ON INVERSE PROBLEM FOR PARABOLIC EQUATION WITH UNKNOWN COEFFICIENT AT THE DERIVATIVE WITH RESPECT TO TIME VARIABLE Details ARTEMOVYCH Orest, LISHCHYNSKYI Ivan ON SKEW POLYNOMIAL RINGS AND SKEW FORMAL POWER SERIES RINGS Details BOKALO Ìykola, KUSHNIR Olena VARIATIONAL NONLINEAR ELLIPTIC INEQUALITIES OF HIGHER ORDER WITH CHANGEABLE EXPONENTS OF NONLINEARITY Details Bugriy Mykola ON AN AXIALLY-SYMMETRIC DYNAMIC PROBLEMS OF OPTIMIZATION OF THE THERMOELASTIC STATE OF THICK-WALLED CYLINDER Details Hryntsiv Nadiya AN INVERSE PROBLEM FOR A DEGENERATE PARABOLIC EQUATION IN A FREE BOUNDARY DOMAIN Details ZERNOVYI Yuriy INVESTIGATION OF THE STATISTICAL-EQUILIBRIUM QUEUEING PROCESS FOR SINGLE-SERVER SYSTEMS WITH DIFFERENT SERVICE TIME CUSTOMERS Details ZELISKO Myhajlo, SHEREMETA Myroslav ON ASYMPTOTIC BEHAVIOUR OF LOGARITHMS OF THE MAXIMUM MODULUS AND MAXIMAL TERM OF DIRICHLET SERIES ABSOLUTELY CONVERGENT IN HALF-PLANE Details KOVTUN Svitlana GENERALISATION OF BLACK-SCHOLES MODEL Details KSHANOVSKYY Ivan AN EXTREMAL PROBLEM FOR MEROMORPHIC FUNCTIONS IN A PUNCTURED PLANE Details LAVRENYUK Serhiy, OLISKEVYCH Marianna MIXED PROBLEM FOR AN ULTRAPARABOLIC EQUATION WITH NONLOCAL SOURCE Details LOPUSHANSKY Andriy THE SOLUTION OF THE BOUNDARY VALUE PROBLEM FOR PARABOLIC EQUATION WITH PSEUDODIFFERENTIAL TERM Details MYKYTYUK Lyubov, POSIKO Olena ON THE APPROXIMATION AND BEHAVIOUR OF THE REMAINDER OF LAPLACE-STILTJES INTEGRAL Details NYTREBYCH Zinoviy THE LIMIT PASSAGE FROM THE SOLUTIONS OF A MULTIPOINT PROBLEM FOR A PARTIAL DIFFERENTIAL EQUATION TO THE SOLUTION OF A MULTIPOINT PROBLEM WITH SMALLER COUNT OF KNOTS Details PUKACH Petro THE WEIGHT CORRECTNESS CLASSES OF SOLUTION OF MIXED PROBLEM FOR NONLINEAR BEAM VIBRATIONS TYPE EQUATION IN UNBOUNDED DOMAIN Details SAGAYDAK Roman DETERMINATION OF UNKNOWN PARAMETERS IN MAJOR COEFFICIENTS OF TWO-DIMENSIONAL PARABOLIC EQUATION Details SALDINA Nataliya A STRONGLY DEGENERATE INVERSE PARABOLIC PROBLEM WITH GENERAL BEHAVIOUR OF THE COEFFICIENTS OF THE EQUATION Details SHEREMETA Myroslav, SUMYK Oksana ON THE LOWER $R$-ORDER OF THE MAXIMAL TERM OF ENTIRE DIRICHLET SERIES Details SHEREMETA Zoryna, SHEREMETA Myroslav BOUNDEDNESS OF $l$-INDEX OF ANALYTIC FUNCTIONS REPRESENTED BY POWER SERIES Details SHUKEL Oksana HYPERSYMMETRIC POWERS AND ASYMPTOTICALLY ZERO-DIMENSIONAL SPACES Details BAZYLEVYCH Lidiya OPENNESS POINTS OF THE PROJECTION MAP OF CONVEX BODIES OF CONSTANT WIDTH Details FRIDER Viktoriya, ZARICHNYI Mykhailo CHARACTERIZATION OF $G$-SYMMETRIC POWER FUNCTORS IN THE COARSE CATEGORY Details KOZHAN Roman OPEN-MULTICOMMUTATIVITY OF THE FUNCTOR OF UPPER-CONTINUOUS CAPACITIES Details LAVRENYUK Serhiy, PANAT Oksana THE MIXED PROBLEM FOR A SEMILINEAR HYPERBOLIC EQUATION IN GENERALIZED LEBESGUE SPACES Details Andrusyak R. V. and the rest SCIENTIFIC HERITAGE S. P. LAVRENYUK Details BODNAR Dmytro, DMYTRYSHYN Roman ON SOME CONVERGENCE CRITERIA FOR BRANCHED CONTINUED FRACTIONS WITH NONEQUIVALENT VARIABLES Details BOKALO Mykola, DMYTRYSHYN Yuriy A PROBLEM WITHOUT INITIAL CONDITIONS FOR EVOLUTION VARIATIONAL INEQUALITIES ON MANIFOLD Details BOKALO Taras MIXED PROBLEM FOR PARABOLIC EQUATION WITH DISLOCATED ACTION Details VOLOKH Oleksandr, SHEREMETA Myroslav ON THE UNIVALENCE RADII OF GELFOND-LEONT'EV DERIVATIVES OF GAP POWER SERIES Details GATALEVICH Andriy, KUCHMA Mariya $I_2$-RINGS AND THEIR PROPERTIES Details GIRNYK Markiyan ENTIRE FUNCTION WITH PRESCRIBED INDICATOR Details ZHERNOVYI Yuriy STATIONARY CHARACTERISTICS OF THE SINGLE-SERVER QUEUEING LOSS SYSTEM WITH FALLING OUT POSSIBILITY Details JOVNER Bohdan, KOLESNICHENKO Maryana, LOPUSHANSKA Halyna GENERALIZED DIRICHLET AND NEUMANN PROBLEMS FOR LAPLACE EQUATION IN DOMAINE WITH A "GAP" Details ZABAVSKY Bohdan REDUCTION OF MATRICES OVER 3-SIMPLE BEZOUT DOMAIN Details ZABAVSKY Bohdan, KISIL Tetyana THE RIGHT BEZOUT RING WITH COMPLETELY PRIME JAKOBSON RADICAL Details KASHUBA Grygoryi, KOMARNYTCKYI Mykola DEDEKIND FINITE DIFFERENTIAL RINGS AND THEIR PRIME RADICAL Details KYRYLYCH Volodymyr, FILIMONOV Andrij LOCAL DIFFERENTIABLE SOLVABILITY OF THE FREE BOUNDARY PROBLEM FOR SINGULAR HYPERBOLIC SYSTEMS OF QUASILINEAR EQUATIONS Details KOPORKH Kateryna A SPACE OF FACTOR-OBJECTS OF COMPACT TOPOLOGICAL SPACE Details LAVRENYUK Serhij, PANAT Oksana ADJOINT PROBLEM FOR HYPERBOLIC EQUATIONS OF THE SECOND AND THIRD ORDER Details LOZYNSKA Vira, MYAUS Olga FUNCTIONAL CALCULUS FOR THE REGULAR ELLIPTIC DIFFERENTIAL OPERATORS Details LUHOVA Lyubomyra ON CONNECTION BETWEEN MAXIMUM MODULUS AND MAXIMAL TERM OF ENTIRE DIRICHLET SERIES IN TERM OF THREE-MEMBER ASYMPTOTICS Details LUBYTSKA Olesia ABOUT SUMMABILITY OF DOUBLE TRIGONOMETRIC SERIES BY GENERALIZED METHODS Details PIPA Hanna NONNEGATIVE AND ACCRETIVE PERTURBATIONS OF THE OPERATOR OF THE THIRD BOUNDARY PROBLEM FOR THE STURM-LIOUVILLE DIFFERENTIAL EXPRESSION WITH THE BOUNDED OPERATOR POTENTIAL Details PROTSAKH Nataliya MIXED PROBLEM FOR DEGENERATE ULTRAPARABOLIC EQUATION Details SNITKO Halyna INVERSE PROBLEM FOR A PARABOLIC EQUATION WITH UNKNOWN MINOR COEFFICIENTS IN A FREE BOUNDARY DOMAIN Details TORHAN Halyna NONEXISTENCE OF A GLOBAL SOLUTION OF ONE HYBRID SYSTEMS OF EVOLUTION EQUATIONS Details FEDYNYAK Stepan, SHEREMETA Myroslav ASYMPTOTIC VALUES OF ENTIRE DIRICHLET SERIES WITH RESPECT TO ITS MAXIMAL TERM Details YATSULKA Petro SUMMATION OF THE RIEMANN ZETA-FUNCTION MOD LOGARITHM ON THE CRITICAL LINE Details - ERRATUM Details SULYM Georgiy VOLODYMYR LEVYTSKYY IN THE ESTABLISHMENT HISTORY OF THE SHEVCHENKO SCIENTIFIC SOCIETIES AND UKRAINIAN CULTURE IN THE FIELD OF EXACT SCIENCES Details KYRYLYCH Volodymyr, FILIMONOV Andrij GLOBAL DIFFERENTIABLE SOLVABILITY OF THE HYPERBOLIC QUASILINEAR VALLEE-POUSSIN PROBLEM WITH FREE BOUNDARY Details TORHAN Halyna BEHAVIOR OF SOLUTIONS OF THE MIXED PROBLEM FOR THE PARABOLIC EQUATION OF THE FOURTH ORDER ON THE INFINITY Details PROKHORENKO Myroslava PROBLEM WITH THE IMPULSE EXCITATION FOR THE MODELLING EQUATION OF OSCILLATIONS OF THE STRING Details ALIEV Soltan, ABDURAKHMANOV Vugar ASYMPTOTIC BEHAVIOR OF JOINT DISTRIBUTION OF THE OVERSHOOT AND THE FIRST PASSAGE TIME OF MARKOV CHAIN FOR THE LEVEL Details ANDRUSYAK Ruslan, BURDEINA Natalya, KYRYLYCH Volodymyr SMOOTH SOLVABILITY OF QUASILINEAR HYPERBOLIC PROBLEM WITH FREE BOUNDARIES Details SHEREMETA Myroslav PROPERTIES OF THE HYPERGEOMETRIC FUNCTION WITH POSITIVE PARAMETERS Details ZARICHNYI Mykhailo, PTASHNYK Bohdan OUTSTANDING UKRAINIAN MATHEMATICIAN AND TEACHER MYRON ZARYTS'KYI (TO THE 120-TH ANNIVERSARY) Details BILAVSKA Sofia ELEMENTS OF STABLE AND ALMOST STABLE RANK 1 Details BOKALO Taras, BUHRII Oleh SOME INTEGRATING BY PARTS FORMULAS IN VARIABLE INDICES OF NON LINEARITY FUNCTION SPACES Details BRODYAK Oksana, VASYL'KIV Yaroslav GENERALIZED WEIERSTRASS THEOREM FOR A $\delta$-SUBHARMONIC ON $\mathbb{C}$ FUNCTIONS Details BUGRIY Mykola ABOUT SOME OPTIMIZATION'S PROBLEM OF THE EXTENDED PORTFOLIO Details GNATIUK Oksana, GRESHKO Olga, STASHYSHYN Ostap TWO-PARAMETER GROWTH CHARACTERISTICS OF NONNEGATIVE AND MEROMORPHIC FUNCTIONS IN THE ANNULUS Details GOLDAK Mariana, KHRYSTIYANYN Andriy INVERSE FORMULAE FOR THE FOURIER COEFFICIENTS OF MEROMORPHIC FUNCTIONS ON ANNULI Details HRYNTSIV Nadiya DETERMINATION OF THE COEFFICIENT OF THE FIRST DERIVATIVE IN A DEGENERATE PARABOLIC EQUATION Details DOMSHA Îl'ha RIGHT QUASIDUO-RING WITH FAINT STABLE RANGE 1 IS LEFT QUASIDUO-RING Details ZHERNOVYI Kostyantyn OPTIMIZATION OF MODES OF SERVICE FOR THE M/M/1/M AND M/M/1 QUEUEING SYSTEMS WITH BLOCKING OF AN INPUT FLOW Details ZABAVSKY Bogdan REGULAR RINGS WITH AN IDEMPOTENT DIAGONAL REDUCTION OF MATRICES Details ZAHORBENS'KYI Pavlo, BUHRII Mykola, BUHRII Oleh ABOUT UNIQUENESS OF SOLUTION TO SOME EVOLUTIONAL HIGH ORDER VARIATIONAL INEQUALITY OF THE PLATE THEORY Details ZDOMSKA Lesya ON THE BRAUER GROUPS AND THE TATE-SHAFAREVICH GROUPS OF CURVES OVER PSEUDOGLOBAL FIELDS Details KYRYLYCH Volodymyr SOME NONLINEAR FREE BOUNDARY PROBLEMS FOR HYPERBOLIC SYSTEMS OF QUASI-LINEAR EQUATIONS Details KOPORKH Kateryna ON SPACE OF OPEN MAPS OF THE UNIT SEGMENT Details MAN'KO Stepan ON SCHR\"{O}DINGER AND STURM-LIOUVILLE OPERATORS WITH $\delta'$-POTENTIALS Details NECHEPURENKO Maksym THE MIXED PROBLEM FOR A NONLINEAR HYPERBOLIC-PARABOLIC SYSTEM IN AN UNBOUNDED DOMAIN Details OLIYNYK Roman ON THE MONOIDS OVER WHICH ALL QUASI-FILTERS ARE TRIVIAL Details PANAT Oksana SOME PROPERTIES OF THE SOLUTIONS TO THIRD ORDER EVOLUTION EQUATIONS WITH VARIABLE EXPONENTS OF NONLINEARITY Details PYRCH Nazar ON THE ISOMORPHISMS OF FREE PARATOPOLOGICAL GROUPS AND FREE HOMOGENEOUS SPACES II Details SAVCHENKO Oleksandr EXTENSION OF FUZZY METRICS: ZERO-DIMENSIONAL CASE Details STAKHIV Ludmyla 2-TORSION OF THE BRAUER GROUP OF ELLIPTIC AND HYPERELLIPTIC CURVES OVER PSEUDOLOCAL FIELDS Details CHMYR Oksana THE POINTED SINGULARITIES OF THE SOLUTION OF VOLTERRA NONLINEAR INTEGRAL EQUATION Details BAZYLEVYCH Lidiya EILENBERG-MACLANE SPACES OF COMPACT CONVEX BODIES OF CONSTANT WIDTH Details BOKALO Mykola UNIQUE SOLVABILITY OF PROBLEM WITHOUT INITIAL CONDITIONS FOR STRONGLY NONLINEAR ELLIPTIC-PARABOLIC EQUATIONS Details BRATIICHUK Mykola, ZHERNOVYI Yuriy RESEARCH OF M/G/1/m AND M/G/1 QUEUES WITH GROUP ARRIVALS AND THRESHOLD BLOCKING OF AN INPUT FLOW Details BUGRIY Mykola SOME OPTIMIZATION'S PROBLEM OF THE STOCK'S PORTFOLIO, WHICH ARE COVERED BY CALL-OPTIONS Details VASYLKIV Yaroslav, POLITYLO Lyubomyr INTEGRAL MEANS OF FUNCTIONS CONJUGATE TO SUBHARMONIC FUNCTIONS Details GOLOVATY Yurij, HRABCHAK Hennadij ON STURM-LIOUVILLE PROBLEM ON STARLIKE GRAPHS WITH HEAVY'' NODES Details GROD Ivan, KULIK Viktor CONSTRUCTION OF LYAPUNOV FUNCTIONS OF SOME LINEAR EXPANSIONS OF DYNAMIC SYSTEMS Details GUTIK Oleg, REITER Andriy ON SEMITOPOLOGICAL SYMMETRIC INVERSE SEMIGROUPS OF A BOUNDED FINITE RANK Details DOVHAN' Bohdan, VUS Andrij INTEGRABLE POTENTIALS OF SYMMETRIC PROBLEMS OF FOURTH AND FIFTH PAIRWISE INTERACTING PARTICLES ON LINE Details YELEJKO Yaroslav, KOSAREVYCH Kateryna SYSTEMS ANALYSIS OF MULTIFACTOR ECONOMETRIC MODELS IN STOCHASTIC ENVIRONMENT Details ZHERNOVYI Kostyantyn OPTIMIZATION OF THE AVERAGE WAITING TIME FOR THE M/M/1/m QUEUES WITH BLOCKING OF AN INPUT FLOW AND SWITCHING OF MODES OF SERVICE Details IVANCHOV Mykola AN INVERSE PROBLEM FOR A GENERAL ONE-DIMENSIONAL PARABOLIC EQUATION Details STASHYSHYN Ostap DEFICIENCIES OF MEROMORPHIC FUNCTIONS IN A PUNCTURED PLANE Details KAS²MOV Zaur ON THE BASIS OF SYSTEM OF EXPONENTIAL FUNCTIONS WITH UNIT IN WEIGHT SPACE Details BOKALO Mykola THE OPTIMAL CONTROL PROBLEM OF EVOLUTION SYSTEMS WITHOUT INITIAL CONDITIONS Details BAZYLYAK Halyna THE INITIAL-BOUNDARY VALUE PROBLEM FOR THE NONLINEAR PARABOLIC EQUATION OF THE FOURTH ORDER WITH SPATIAL VARIABLE IN UNBOUNDED DOMAIN FOR THE TIME Details BURDEINA Natalya THE CONJUGATION SOLUTIONS OF HYPERBOLIC PROBLEM FOR SYSTEM OF QUASI-LINEAR EQUATIONS ALONG UNKNOWN DISCONTINUITY LINE IN CURVILINEAR SECTOR Details BOLDOVS'KA Ol'ha EXISTENCE OF THE SOLUTION TO NEUMANN PROBLEM TO FOR QUASILINEAR PARABOLIC ABSORBTION EQUATION IN UNBOUNDED DOMAIN WITH ZERO SHARPENING Details BRATIICHUK Mykola, ZHERNOVYI Yuriy STATIONARY CHARACTERISTICS OF M$^\theta$/G/1/m AND M$^\theta$/G/1 QUEUES WITH THRESHOLD BLOCKING OF AN INPUT FLOW Details BUGRIY Mykola ON SOME OPTIMIZATION PROBLEM OF THE STOCK PORTFOLIO COVERED BY OPTIONS OF EUROPEAN STYLE Details BUGRIY Mykola ON SOME OPTIMIZATION PROBLEM OF THE STOCK PORTFOLIO COVERED BY OPTIONS OF EUROPEAN STYLE Details VASYLKIV Yaroslav, POLITYLO Lyubomyr INTEGRAL MEANS OF FUNCTIONS CONJUGATE TO SUBHARMONIC FUNCTIONS. II Details GADJIEV Tahir, MAMEDOVA Kenyul ON BEHAVIOR OF SOLUTIONS OF HIGHER ORDER DEGENERATE PARABOLIC EQUATIONS Details GATALEVYCH Andriy COMPLETING ROW OVER COMMUTATIVE BEZOUT RING TO MATRIX DETERMINANT OF WHICH ONE OF THE MOST COMMON DIVISOR OF ALL ELEMENTS OF THIS ROW Details GNATIUK Oksana, KONDRATYUK Andriy, KUDJAVINA Julia CLASSIFICATION OF ISOLATED SINGULARITIES OF SUBHARMONIC FUNCTIONS Details GURAN Igor, GUTIK Oleg, RAVSKY Oleksandr, CHUCHMAN Ivan SYMMETRIC TOPOLOGICAL GROUPS AND SEMIGROUPS Details YELEYKO Yaroslav, BAZYLEVYCH Iryna, TYMKIV Galyna LIMIT THEOREM FOR BRANCHING PROCESS WITH AN ARBITRARY NUMBER OF TYPES OF PARTICLES AND IMMIGRATION Details YELEYKO Yaroslav, LAZARIV Taras, MAZUR Stepan MULTIFRACTAL PRODUCTS OF DIFFUSION PROCESSES AND RANDOMIZED SCENARIO Details ZABOLOTSKYY Mykola, DEYNEKA Ihor PROPERTY OF MONOTONICITY WITH RESPECT TO ZEROS AND POLES OF NEVANLINNA CHARACTERISTIC OF MEROMORPHIC FUNCTIONS Details IVASYSHEN Stepan, IVASYUK Halyna PARABOLIC INITIAL PROBLEMS OF SOLONNIKOV-EIDELMAN Details KINDYBALIUK Arkady, PRYTULA Mykola BIHAMILTONITY AND EXACT SOLUTIONS OF BURGER'S TYPE GENERALIZED DYNAMICAL SYSTEM Details KOSAREVYCH Kateryna SOME ASPECTS OF COMPETITIVE QUANTITATIVE ANALYSIS WITH RANDOM STRATEGY OF ONE FIRM Details LOPUSHANSKA Halyna GENERALIZED INITIAL AND BOUNDARY VALUES OF THE SOLUTIONS OF THE PARABOLIC SYSTEM EQUATIONS Details MAHOLA Yaroslav ON ENTIRE SOLUTIONS OF LINEAR DIFFERENTIAL EQUATIONS WITH POLYNOMIAL COEFFICIENTS Details OKHRIN Ostap ON THE GENERATING FUNCTIONAL OF THE SPECIAL CASE OF $S$-STOPPED BRANCHING PROCESSES Details SAVITSKA Tetiana AN INVERSE PROBLEM FOR A PARABOLIC EQUATION IN THE DOMAIN WITH A WEAKLY DEGENERATE BOUNDARY Details SAVCHENKO Aleksandr ON FUZZY GROMOV-HAUSDORFF HYPERSPACE OF THE UNIT SEGMENT Details CHMYR Oksana CHARACTER POINTED POWER SINGULARITIES OF THE SOLUTION OF THE NONLINEAR FIRST GENERALIZED BOUNDARY VALUE PROBLEM FOR HEAT EQUATION Details Ruslan ANDRUSYAK, Volodymyr KYRYLYCH, Olga PELIUSHKEVYCH GLOBAL SOLVABILITY OF A MIXED PROBLEM FOR DEGENERATE HYPERBOLIC SYSTEM Details Oksana BODNAR, Mykola ZABOLOTSKII DISTRIBUTION OF ZEROS FOR THE ARGUMENTS AND FOURIER COEFFICIENTS OF LOGARITHM OF AN ENTIRE FUNCTION Details Anna BODNARCHUK, Nadiya HUZYK COEFFICIENT INVERSE PROBLEM FOR A PARABOLIC EQUATION WITH AN ARBITRARY WEAK DEGENERATION Details Taras BOKALO ON SOLVABILITY OF SOME NONLINEAR DEGENERATE ANISOTROPIC PARABOLIC EQUATIONS Details Mykola BRATIICHUK, Yuriy ZHERNOVYI QUEUEING SYSTEM M$^\theta$/G/1/m WITH TWO THRESHOLD REGULATION OF QUEUE Details Andrii BRYDUN, Nataliya SOKUL'S'KA SOME PROPERTIES OF HOLOMORPHIC FUNCTIONS IN A HALF-STRIP Details Oleh BUHRII ON EXISTENCE OF THE MILD SOLUTION OF THE INITIAL-BOUNDARY VALUE PROBLEM FOR MODEL SEMILINEAR PARABOLIC EQUATION WITH VARIABLE EXPONENT OF NONLINEARITY Details Mariana GOLDAK, Andriy KHRYSTIYANYN HOLOMORPHIC FUNCTIONS OF COMPLETELY REGULAR GROWTH IN THE PUNCTURED PLANE Details Mykola HRYTSIV MULTITERMED EXPONENTIAL-POWER ASYMPTOTIC OF ENTIRE DIRICHLET SERIES Details Oleg GUTIK, Iryna FIHEL EMBEDDING OF TOPOLOGICAL SEMIGROUPS INTO IDEMPOTENT GENERATED TOPOLOGICAL SEMIGROUPS Details Kostyantyn ZHERNOVYI BUSY PERIOD AND THE NUMBER OF SERVED CUSTOMERS FOR $\text{M}^{\theta}\text{/G/1/m}$ QUEUES WITH THRESHOLD STRATEGIES OF FUNCTIONING Details Roman KVIT ABOUT STATISTICAL STRENGTH CHARACTERISTICS OF COMPOSITE MATERIALS Details Iryna KMIT CLASSICAL SOLVABILITY OF A SINGULAR HYPERBOLIC PROBLEM WITH INTEGRAL BOUNDARY CONDITION Details Kateryna KOPORKH ON SPACE OF OPEN MAPS OF THE CIRCLE Details Àndriy LOPUSHANSKY THE SOLVABILITY OF SEMI-LINEAR CAUCHY PROBLEM, PERTURBED ON COMPLEX INTERPOLATION SCALES Details Olena PASICHNYK EXISTENCE OF SOLUTION TO THE CAUCHY PROBLEM FOR SEMI-LINEAR DIFFUSION EQUATION WITH TIME FRACTIONAL DERIVATIVE WITH DISTRIBUTIONS IN INITIAL DATA Details Yuriy SYDORENKO, Oleksandr CHVARTATSKYI INTEGRATION OF SCALAR KADOMTSEV-PETVIASHVILI HIERARCHY BY THE METHOD OF INTEGRAL DARBOUX-LIKE TRANSFORMATIONS Details Myroslav SHEREMETA BOUNDEDNESS OF $l-M$-INDEX OF ANALYTIC CURVES Details