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  Subjects -> MATHEMATICS (Total: 886 journals)
    - APPLIED MATHEMATICS (72 journals)
    - GEOMETRY AND TOPOLOGY (20 journals)
    - MATHEMATICS (656 journals)
    - MATHEMATICS (GENERAL) (42 journals)
    - NUMERICAL ANALYSIS (19 journals)
    - PROBABILITIES AND MATH STATISTICS (77 journals)

MATHEMATICS (656 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 3)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 3)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 8)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 4)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Full-text available via subscription   (Followers: 22)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 11)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 8)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15)
Advances in Decision Sciences     Open Access   (Followers: 5)
Advances in Difference Equations     Open Access   (Followers: 1)
Advances in Fixed Point Theory     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 2)
Advances in Materials Sciences     Open Access   (Followers: 16)
Advances in Mathematical Physics     Open Access   (Followers: 5)
Advances in Mathematics     Full-text available via subscription   (Followers: 10)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 6)
Advances in Pure Mathematics     Open Access   (Followers: 4)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 4)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 8)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Algebra and Logic     Hybrid Journal   (Followers: 4)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Full-text available via subscription   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 5)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 7)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access   (Followers: 1)
Analysis     Hybrid Journal   (Followers: 2)
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3)
Analysis Mathematica     Full-text available via subscription  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales UMCS, Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Data Science     Hybrid Journal   (Followers: 9)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 6)
Annals of Mathematics     Full-text available via subscription  
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 6)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annuaire du Collège de France     Open Access   (Followers: 5)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 2)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Mathematics     Open Access   (Followers: 3)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 1)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 1)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites : The Journal of Space Research Centre of Polish Academy of Sciences     Open Access   (Followers: 19)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Journal of Current Engineering & Maths     Open Access  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 2)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Baltic International Yearbook of Cognition, Logic and Communication     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 1)
BIT Numerical Mathematics     Hybrid Journal  
BoEM - Boletim online de Educação Matemática     Open Access  
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 1)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 20)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 8)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 1)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal  
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
ChemSusChem     Hybrid Journal   (Followers: 7)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Full-text available via subscription   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 1)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Complexus     Full-text available via subscription  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Comptes Rendus Mathematique     Full-text available via subscription   (Followers: 1)
Computational and Applied Mathematics     Hybrid Journal   (Followers: 2)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 4)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 14)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 11)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 28)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Mathematics     Hybrid Journal  
Duke Mathematical Journal     Full-text available via subscription   (Followers: 1)
Edited Series on Advances in Nonlinear Science and Complexity     Full-text available via subscription  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 2)
Electronic Notes in Discrete Mathematics     Full-text available via subscription   (Followers: 2)
Elemente der Mathematik     Full-text available via subscription   (Followers: 3)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Ensino da Matemática em Debate     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Full-text available via subscription   (Followers: 1)
European Journal of Combinatorics     Full-text available via subscription   (Followers: 5)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 2)
Experimental Mathematics     Hybrid Journal   (Followers: 4)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Fasciculi Mathematici     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 4)
Fixed Point Theory and Applications     Open Access   (Followers: 1)

        1 2 3 4 | Last

Journal Cover Doklady Mathematics
  [SJR: 0.341]   [H-I: 17]   [0 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1531-8362 - ISSN (Online) 1064-5624
   Published by Springer-Verlag Homepage  [2352 journals]
  • Banach limits: Invariance and functional characteristics
    • Authors: E. A. Alekhno; E. M. Semenov; F. A. Sukochev; A. S. Usachev
      Pages: 305 - 307
      Abstract: Abstract Banach limits invariant with respect to the Cesàro transform are studied. New functional characteristics of Banach limits are introduced and studied.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040019
      Issue No: Vol. 96, No. 1 (2017)
       
  • On long-time asymptotics of solutions of parabolic equations with
           increasing leading coefficients
    • Authors: V. N. Denisov
      Pages: 308 - 311
      Abstract: Abstract Sharp sufficient conditions on the coefficients of a second-order parabolic equation are examined under which the solution of the corresponding Cauchy problem with a power-law growing initial function stabilizes to zero. An example is presented showing that the found sufficient conditions are sharp. Conditions on the coefficients of a parabolic equation are obtained under which the solution of the Cauchy problem with a bounded initial function stabilizes to zero at a power law rate.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040020
      Issue No: Vol. 96, No. 1 (2017)
       
  • On modality of representations
    • Authors: V. L. Popov
      Pages: 312 - 314
      Abstract: Abstract For connected simple algebraic groups defined over an algebraically closed field of characteristic zero, the classifications of irreducible algebraic representations of modalities 0, 1, and 2 are obtained.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040032
      Issue No: Vol. 96, No. 1 (2017)
       
  • Boundedness of quasilinear integral operators of iterated type with
           Oinarov’s kernel on the cone of monotone functions
    • Authors: V. D. Stepanov; G. E. Shambilova
      Pages: 315 - 320
      Abstract: Abstract Necessary and sufficient conditions for the weighted boundedness of a class of positive quasilinear two-kernel integral operators of iterated type on the real half-line are given.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040056
      Issue No: Vol. 96, No. 1 (2017)
       
  • Spectra of first-order formulas with a low quantifier depth and a small
           number of quantifier alternations
    • Authors: M. E. Zhukovskii; A. D. Matushkin
      Pages: 326 - 328
      Abstract: Abstract Spectra of first-order formulas are studied. The spectrum of a first-order formula is the set of all positive α such that either this formula is true for the random graph G(n, n −α) with an asymptotic probability being neither 0 nor 1 or the limit does not exist. It is well known that there exists a first-order formula with an infinite spectrum. The minimum number of quantifier alternations in such a formula is found.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040093
      Issue No: Vol. 96, No. 1 (2017)
       
  • On problem of the dynamics of a viscoelastic medium with memory on an
           infinite interval
    • Authors: V. G. Zvyagin; V. P. Orlov
      Pages: 329 - 331
      Abstract: Abstract The existence of a weak solution of a boundary value problem for a viscoelasticity model with memory on an infinite time interval is proved. The proof relies on an approximation of the original boundary value problem by regularized ones on finite time intervals and makes use of recent results concerning the solvability of Cauchy problems for systems of ordinary differential equations in the class of regular Lagrangian flows.
      PubDate: 2017-07-01
      DOI: 10.1134/s106456241704010x
      Issue No: Vol. 96, No. 1 (2017)
       
  • On the periodicity of continued fractions in elliptic fields
    • Authors: V. P. Platonov; G. V. Fedorov
      Pages: 332 - 335
      Abstract: Abstract Article [1] raised the question of the finiteness of the number of square-free polynomials f ∈ ℚ[h] of fixed degree for which \(\sqrt f \) has periodic continued fraction expansion in the field ℚ((h)) and the fields ℚ(h)( \(\sqrt f \) ) are not isomorphic to one another and to fields of the form ℚ(h) \(\left( {\sqrt {c{h^n} + 1} } \right)\) , where c ∈ ℚ* and n ∈ ℕ. In this paper, we give a positive answer to this question for an elliptic field ℚ(h)( \(\sqrt f \) ) in the case deg f = 3.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040068
      Issue No: Vol. 96, No. 1 (2017)
       
  • Improvements of the Frankl–Rödl theorem and geometric
           consequences
    • Authors: R. I. Prosanov; A. M. Raigorodskii; A. A. Sagdeev
      Pages: 336 - 338
      Abstract: Abstract The Frankl–Rödl classical bound for the number of edges in a hypergraph with forbidden intersections is improved. The improvements are used to obtain new results in Euclidean Ramsey theory and in combinatorial geometry.
      PubDate: 2017-07-01
      DOI: 10.1134/s106456241704007x
      Issue No: Vol. 96, No. 1 (2017)
       
  • Homogenization of the boundary value problem for the laplace operator in a
           perforated domain with a rapidly oscillating nonhomogeneous Robin-type
           condition on the boundary of holes in the critical case
    • Authors: M. N. Zubova; T. A. Shaposhnikova
      Pages: 344 - 347
      Abstract: Abstract The asymptotic behavior of solutions to a boundary value problem in a domain periodically perforated by small holes with a rapidly oscillating nonhomogeneous Robin-type condition on their boundaries is investigated in the case of critical parameter values.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040159
      Issue No: Vol. 96, No. 1 (2017)
       
  • Turán-type bounds for distance graphs
    • Authors: L. E. Shabanov; A. M. Raigorodskii
      Pages: 351 - 353
      Abstract: Abstract A lower bound is obtained for the number of edges in a distance graph G in an infinitesimal plane layer ℝ2 × [0, ε] d , which relates the number of edges e(G), the number of vertices ν(G), and the independence number α(G). It is proved that \(e\left( G \right) \geqslant \frac{{19\nu \left( G \right) - 50\alpha \left( G \right)}}{3}\) . This result generalizes a previous bound for distance graphs in the plane. It substantially improves Turán’s bound in the case where \(\frac{1}{5} \leqslant \frac{{\alpha \left( G \right)}}{{\nu \left( G \right)}} \leqslant \frac{2}{7}\) .
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040135
      Issue No: Vol. 96, No. 1 (2017)
       
  • Integral representation of solutions of the Moisil–Théodorescu system
           in multiply connected domains
    • Authors: V. A. Polunin; A. P. Soldatov
      Pages: 358 - 361
      Abstract: Abstract A new integral representation of the general solution of the Moisil–Théodorescu system in a bounded multiply connected domain with a smooth boundary is obtained.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040172
      Issue No: Vol. 96, No. 1 (2017)
       
  • Continuous selection from the sets of best and near-best approximation
    • Authors: I. G. Tsar’kov
      Pages: 362 - 364
      Abstract: Abstract The paper studies approximation and structural geometric-topological properties of sets in normed and more general (asymmetric) spaces for which there exists a continuous selection for the best and near-best approximation operators. Sufficient conditions on the metric projection of sets which ensure the existence of a continuous selection for this projection are obtained, and the structural properties of such sets are determined. The existence of a continuous selection for the near-best approximation operator on a finite-dimensional space more general than a normed space is investigated. It is shown that the lower semicontinuity of the metric projection is sufficient for the existence of a continuous selection for the near-best approximation operator in the general case.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040196
      Issue No: Vol. 96, No. 1 (2017)
       
  • On the existence of solutions to a class of boundary value problems in a
           strip for high-order degenerate elliptic equations
    • Authors: A. D. Baev; V. V. Pankov
      Pages: 365 - 367
      Abstract: Abstract Problems in a strip for high-order elliptic equations that degenerate into an odd-order equation on the strip boundary are studied. Coercive a priori estimates and existence and uniqueness theorems for solutions of such problems are obtained in special weighted Sobolev-type spaces. The norms in these spaces are defined with the help of a special integral transform.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040214
      Issue No: Vol. 96, No. 1 (2017)
       
  • Feynman path integrals and Lebesgue–Feynman measures
    • Authors: J. Montaldi; O. G. Smolyanov
      Pages: 368 - 372
      Abstract: Abstract The definition of Feynman path integrals (Feynman functional integrals) as integrals with respect to a generalized measure, called the Lebesgue–Feynman measure in the paper and being an infinite-dimensional analogue of the classical Lebesgue measure on finite-dimensional Euclidean space, is discussed. This definition, which is a formalization of Feynman’s original definition, is different from those used previously in the mathematical literature. It makes it possible to give a description of the origin of quantum anomaly which is a mathematically correct version of the description given in the book Path Integrals and Quantum Anomalies by K. Fujikawa and H. Suzuki (Oxford, 2004) (and erroneously qualified as wrong in the book Functional Integration: Action and Symmetries by P. Cartier and C. DeWitt-Morette (Cambridge Univ. Press, Cambridge, 2006)).
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040226
      Issue No: Vol. 96, No. 1 (2017)
       
  • Asymptotic integration of the Riccati equation by methods of power
           geometry
    • Authors: V. S. Samovol
      Pages: 373 - 376
      Abstract: Abstract The Riccati equation is considered. Both continuable and noncontinuable solutions of this equation are studied. Asymptotic representations of its solutions are obtained by power geometry methods.
      PubDate: 2017-07-01
      DOI: 10.1134/s106456241704024x
      Issue No: Vol. 96, No. 1 (2017)
       
  • On global solvability of initial value problem for hyperbolic
           Monge–Ampère equations and systems
    • Authors: D. V. Tunitsky
      Pages: 377 - 379
      Abstract: Abstract The communication concerns a theory of global solvability of initial value problem for nonlinear hyperbolic equations with two independent variables that is an immediate analog of a theory of global solvability of ordinary differential equations.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040263
      Issue No: Vol. 96, No. 1 (2017)
       
  • On eigenfunctions of a convolution operator on a finite interval for which
           the Fourier image of the kernel is the characteristic function
    • Authors: A. A. Polosin
      Pages: 389 - 392
      Abstract: Abstract An asymptotic representation of the eigenfunctions of a convolution-type completely continuous operator for which the image of the kernel is the characteristic function of the interval is constructed.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040305
      Issue No: Vol. 96, No. 1 (2017)
       
  • Restoration of a potential from noisy spectral data
    • Authors: V. V. Ternovskii; T. M. Khapaeva; M. M. Khapaev
      Pages: 403 - 405
      Abstract: Abstract Interest in the inverse Sturm–Liouville problem is motivated by its numerous applications in mathematics and computational physics. To solve a complete inverse problem, one needs two exact spectra, which are usually not known in experimental spectroscopy. Accordingly, a problem of interest is to restore the potential from a finite set of noisy spectral data. A new variational method for solving inverse spectral problems is proposed, which is based on the regularization of ill-posed problems. The method takes into account the measurement error of the spectrum and restores the potential without using simplifying assumptions that it belongs to a certain functional class. The method has been tested on potentials involving smooth segments and jump discontinuities.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040251
      Issue No: Vol. 96, No. 1 (2017)
       
  • Optimization of an energy market transportation system
    • Authors: A. A. Vasin; O. M. Grigoryeva; N. I. Tsyganov
      Pages: 411 - 414
      Abstract: Abstract The optimization of a transportation system in terms of an increase in social welfare is considered. A new algorithm for solving this problem is described in the case where the welfare function is supermodular on the set of lines, and the efficiency of the algorithm is demonstrated. The sub- and supermodularity properties are generalized in the form of complementary and competitive transportation lines. For tree-structured markets, the conditions are indicated under which, for any pair of lines, it can be determined whether they are competitive or complementary.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040202
      Issue No: Vol. 96, No. 1 (2017)
       
  • Problems of computing norms of 2D systems
    • Authors: V. V. Pozdyayev
      Pages: 419 - 422
      Abstract: Abstract The computation of the H ∞ and H 2 norms of 2D systems (systems whose dynamic state depends on two independent variables) can be reduced to algebraic problems underlain by parametrized linear matrix inequalities, which have to hold for all parameter values. Available methods for solving such problems based on their interpretation in terms of nonnegative polynomials are poorly scaled since the sizes of auxiliary problems grow rapidly. In this paper, solution methods are presented that are simpler and more efficient as compared with well-known results.
      PubDate: 2017-07-01
      DOI: 10.1134/s1064562417040184
      Issue No: Vol. 96, No. 1 (2017)
       
 
 
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