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  • Zamorzaeva, Elizaveta (Valines SRL, 2014)
    For hyperbolic translation group of genus 2 isohedral tilings of the hyperbolic plane with 12-gons are obtained.
  • Zamorzaeva, Elizaveta (CEP USM, 2017)
    The paper studies isohedral tilings of the hyperbolic plane for the group of translations of genus 2 by 14-gons. It is shown how to enumerate all eligible cycles of valencies for polygon with large number of vertices.
  • Grecu, Ion (Valines SRL, 2014)
    Relations between the multiplication groups of loops which are isostrophes of quasigroups are studied in the present work. We prove that, if (Q; ¢) is a quasigroup and its isostrophe (Q; ±), where x ± y = Ã(y) n '(x), ...
  • Grecu, Ion (CEP USM, 2014)
    A loop is called a middle Bol loop if every loop isotope of satisfies the identity(i.e. if the anti- autmorphic inverse property is universal in ). Middle Bol loops are isostrophes of left (right) Bol loops. Multiplication ...
  • Buzatu, Radu; Cataranciuc, Sergiu (Institutul de Matematică şi Informatică al Academiei de Ştiinţe a Moldovei, 2018)
    In this paper we prove that it is NP-complete to decide whet- her a graph can be partitioned into nontrivial convex sets. We show that it can be verified in polynomial time whether a graph can be covered by nontrivial ...
  • Syrbu, Parascovia; Ceban, Diana (Institutul de Matematică şi Informatică al AŞM, 2017)
    In the present workwe describ eallorthogonal systems consisting of three ternary quasigroupop erations and of all (three) ternary selectors,admitting at least one nontrivial paratopy. In[11]we proved that there exist ...
  • Syrbu, P.; Ceban, D. (Academy of Sciences of Moldova, 2016)
    A paratopy of an orthogonal system = {A1,A2, . . . ,An} of n-ary quasigroups, defined on a nonempty set Q, is a mapping : Qn 7→ Qn such that = , where = {A1 ,A2 , . . . ,An }. The paratopies of the orthogonal ...
  • Grecu, Ion (CEP USM, 2015)
    A loop (Q1▪) is called a middle Bol loop if every loop isotope of (Q1▪) satisfies the identity (x∙y)-1 = y -1 x -1 (i.e. if the anti-automorphic inverse property is universal in (Q1▪) [1]. Middle Bol loops are isostrophes ...
  • Ceban, Dina; Syrbu, Parascovia (CEP USM, 2015)
    Quasigroups with two identities (of typesT1 and T2) from Belousov-Bennett classification are considered. It is proved that a π-quasigroup of type T2 is also of type only if it satisfies the identity yx∙x=y (the “right keys ...
  • Larionova - Cojocaru, Inga; Syrbu, Parascovia (CEP USM, 2015)
    Recursively differentiable binary quasigroups and loops, are considered in the present paper. Invariants under the recursive differentiability of binary quasigroups are found. It is shown that the recursive derivative of ...
  • Larionova-Cojocaru, Inga; Syrbu, Parascovia (Valines SRL, 2014)
    A quasigroup is called recursively n-differentiable if its first n recursive derivatives are quasigroups. The class of recursively differential quasigroups is arisen in the theory of MDS codes, in early 2000. Connections ...
  • Ceban, Dina (CEP USM, 2016)
    Identities of length 5, with two variables in binary quasigroups are called minimal identities. V.Belousov and, independently, F. Bennett showed that, up to the parastrophic equivalence, there are seven minimal identities. ...
  • Neagu, Vasile (CEP USM, 2017)
    The generalized Riemann boundary value-problem is investigated in the case of a piecewise Lyapunov contour. It is proved that the conditions for normal solvability depend on the coefficients of the problem, as well as on ...
  • Corcodel, Dan; Corcodel, Artur (CEP USM, 2014)
    This paper is a comprehensive analysis of economic terminology. Its topical subject is indisputable given the fact that we live in the era of globalization where economic terminology not only is increasing, but also it is ...
  • Syrbu, Parascovia; Ceban, Dina (Academy of Sciences of Moldova, 2014)
    Quasigroups satisfying the identityx(x· xy ) = y are called π -quasigroups of type T 1 . The spectrum of the defining identity is precisely q = 0 or 1(mod 3), except for q = 6. Necessary conditions when a ...
  • Arseni, Alexandru (2017)
    Poporul suveran îşi poate exercita dreptul său natural şi inalienabil de a legifera, delegându-l unor reprezentanţi desemnaţi după proceduri electorale. Problema care s-a pus şi se pune este de a găsi un mecanism juridico-statal ...
  • Trebeș, Tatiana (CEP USM, 2017)
    Din punctul de vedere al frecvenței onomastice, nucleul inventarului de nume actual al Republicii Moldova (în special al orașului Orhei) îl constituie prenumele calendaristice, care, în pofida concurenței numelor laice, ...
  • Rusu, Serghei (CEP USM, 2017)
    Articolul reprezintă o cercetare a uneia dintre cele mai importante probleme a Le Dreptului Internațional Privat –operațiunea calificării. Conține argumentarea soluțiilor sugerate pentru a rezolva operațiunea de calificare ...
  • Rusu, Liliana (CEP USM, 2016)
    In articol este tratat fenomenul opiniei publice în condiţiile ascensiunii noilor media. Pornind de la viziunile exprimate în lucrările unor cercetători din domeniu, ca Patrick Champagne, Pippa Noris, Camelia Beciu, Paul ...
  • Manea, Vladislav (CEP USM, 2016)
    Scopul acestui articol rezidăîn analiza detaliată a opiniilor doctrinare, a legislaţiei penale în vigoare a Republicii Moldova, precum şi în formularea unor propuneri relevante în materia favorizării infractorului. Studiul ...