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  • On fluctuations of the Black Sea basin after the Last Glacial Maximum and Early Holocene 
    Slavova, K. (Геология и полезные ископаемые Мирового океана, 2009)
    The aim of this paper is to determine the causality between the cycles of Solar Luminosity on the one hand, and the palaeoclimatic data for the Black Sea region and the fluctuations of the Black Sea Basin on the other ...
  • On Four-Dimensional Paracomplex Structures with Norden Metrics 
    İşcan, M.; Özkan, M. (Український математичний журнал, 2015)
    We study almost paracomplex structures with Norden metric on Walker 4-manifolds and try to find general solutions for the integrability of these structures on suitable local coordinates. We also discuss para-Kähler ...
  • On Fredholm parameter-dependent boundary-value problem in Sobolev spaces 
    Atlasiuk, O.M.; Mikhailets, V.A. (Доповіді НАН України, 2020)
    We consider the most general class of linear inhomogeneous boundary-value problems for systems of r-th order ordinary differential equations whose solutions and right-hand sides belong to appropriate Sobolev spaces. ...
  • On Free Field Realizations of W(2,2)-Modules 
    Adamović, D.; Radobolja, G. (Symmetry, Integrability and Geometry: Methods and Applications, 2016)
    The aim of the paper is to study modules for the twisted Heisenberg-Virasoro algebra H at level zero as modules for the W(2,2)-algebra by using construction from [J. Pure Appl. Algebra 219 (2015), 4322-4342, arXiv:1405.1707]. ...
  • On Free Pseudo-Product Fundamental Graded Lie Algebras 
    Yatsui, T. (Symmetry, Integrability and Geometry: Methods and Applications, 2012)
    In this paper we first state the classification of the prolongations of complex free fundamental graded Lie algebras. Next we introduce the notion of free pseudo-product fundamental graded Lie algebras and study the ...
  • On free vector balleans 
    Protasov, I.; Protasova, K. (Algebra and Discrete Mathematics, 2019)
    A vector balleans is a vector space over R endowed with a coarse structure in such a way that the vector operations are coarse mappings. We prove that, for every ballean (X, E), there exists the unique free vector ballean ...
  • On free vibrations of a thick periodic junction with concentrated masses on the fine rods 
    Mel'nyk, T. A. (Нелінійні коливання, 1999)
    Доведенi теореми про збiжнiсть та асимптотичнi оцiнки (коли ε → 0) для власних значень та власних функцiй крайової задачi для оператора Лапласа в плоскому густому перiодичному з’єднаннi з концентрованою масою. Це з’єднання ...
  • On Frobenius full matrix algebras with structure systems 
    Fujita, H.; Sakai, Y.; Simson, D. (Algebra and Discrete Mathematics, 2007)
    Let n ≥ 2 be an integer. In [5] and [6], an n × n A-full matrix algebra over a field K is defined to be the set Mn(K) of all square n × n matrices with coefficients in K equipped with a multiplication defined by a ...
  • On fully wild categories of representations of posets 
    Kasjan, S. (Algebra and Discrete Mathematics, 2006)
    Assume that I is a finite partially ordered set and k is a field. We prove that if the category prin(kI) of prinjective modules over the incidence k-algebra kI of I is fully k-wild then the category fpr(I,k) of finite ...
  • On functional equations and distributive second order formulae with specialized quantifiers 
    Movsisyan, Yu. (Algebra and Discrete Mathematics, 2018)
    The structure of invertible algebras with distributive second order formulae with specialized quantifiers is given. As a consequence, the applications for solutions of the some functional equations of distributivity on ...
  • On fundamental group of Riemannian manifolds with ommited fractal subsets 
    Mirzaie, R. (Український математичний журнал, 2011)
    We show that if K is a closed and bounded subset of a Riemannian manifold M of dimension m>3, and the fractal dimension of K is less than m−3, then the fundamental groups of M and M−K are isomorphic.
  • On Fundamental Theorems for Holomorphic Curves on the Annuli 
    Phuong, H.T.; Thin, N.V. (Український математичний журнал, 2015)
    We prove some fundamental theorems for holomorphic curves on the annuli crossing a finite set of fixed hyperplanes in the general position in ℙn(ℂ) with ramification.
  • On fuzzy semi δ – V continuity in fuzzy δ – V topological space 
    Mukherjee, A.; Halder, S. (Український математичний журнал, 2008)
    New concepts of fuzzy semi δ – V and fuzzy semi δ – Λ sets were introduced in the work „On fuzzy semi δ – Λ sets and fuzzy semi δ – V sets V – 6” by the authors (J. Trip. Math. Soc., 6, 81 – 88 (2004)). It was shown that ...
  • On Galois groups of prime degree polynomials with complex roots 
    Oz Ben-Shimol (Algebra and Discrete Mathematics, 2009)
    Let f be an irreducible polynomial of prime degree p≥5 over Q, with precisely k pairs of complex roots. Using a result of Jens Hochsmann (1999), show that if p≥4k+1 then Gal(f/Q) is isomorphic to Ap or Sp. This improves ...
  • On GARCH(p,q) convergence 
    Carkovs, J.; Gutmanis, N. (2007)
    The paper deals with symmetric GARCH(p,q) model. Assuming that there exists defined by this model stationary time series, we have proposed the necessary and sufficient condition for exponential mean square convergence of ...
  • On gas and hydraulic tightness of accelerating sections 
    Zhiglo, V.F. (Вопросы атомной науки и техники, 2021)
    A technique for calculating the required impenetrability of brazing linac accelerating sections cooled by water and for control of their hydraulic tightness based on the total helium leakage rate is given. Three types of ...
  • On Gauss-Bonnet Curvatures 
    Labbi, M.L. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    The (2k)-th Gauss-Bonnet curvature is a generalization to higher dimensions of the (2k)-dimensional Gauss-Bonnet integrand, it coincides with the usual scalar curvature for k =1. The Gauss-Bonnet curvatures are used in ...
  • On generalization of ⊕-cofinitely supplemented modules 
    Nisanci, B.; Pancar, A. (Український математичний журнал, 2010)
    We study the properties of ⊕-cofinitely radical supplemented modules, or, briefly, cgs ⊕-modules. It is shown that a module with summand sum property (SSP) is cgs ⊕ if and only if M/w Loc⊕ M (w Loc⊕ M is the sum of all ...
  • On generalized derivations satisfying certain identities 
    Albaş, E. (Український математичний журнал, 2011)
  • On Generalized Hardy Sums s₅(h, k) 
    Simsek, Y. (Український математичний журнал, 2004)
    The aim of this paper is to study generalized Hardy sums s₅(h, k). By using mediants and the adjacent difference of Farey fractions, we establish a relationship between s₅(h, k) and Farey fractions. Using generalized ...