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  1. Correction to: On the Unique Solvability of the Absolute Value Equation

    In this note, we give the two counterexamples for two unique solvability conditions that appeared in the published paper by Wu et al. (J Optim Theory...

    Article 13 January 2024
  2. Unique Solvability of the Zaremba Problem for Linear Second Order Elliptic Equations with Drift

    We establish the unique solvability of the Zaremba problem for linear second order elliptic equations in divergence form with measurable coefficients...

    Yu.A. Alkhutov, G. A. Chechkin in Journal of Mathematical Sciences
    Article 13 May 2024
  3. Characterization of unique solvability of absolute value equations: an overview, extensions, and future directions

    This paper provides an overview of the necessary and sufficient conditions for guaranteeing the unique solvability of absolute value equations. In...

    Shubham Kumar, Deepmala, ... Hossein Moosaei in Optimization Letters
    Article 09 February 2024
  4. Unique Solvability of the Boundary-Value Problems for Nonlinear Fractional Functional Differential Equations

    By using the Krasnoselskii theorem, we obtain general conditions for the unique solvability of boundaryvalue problems for (non)linear fractional...

    N. Dilna, M. Gromyak, S. Leshchuk in Journal of Mathematical Sciences
    Article 01 August 2022
  5. Absolute Value Equations with Tensor Product Structure: Unique Solvability and Numerical Solution

    We consider the absolute value equations (AVEs) with a certain tensor product structure. Two aspects of this kind of AVEs are discussed in detail:...

    Somayeh Mollahsani, Fatemeh Panjeh Ali Beik in Applications of Mathematics
    Article 10 June 2022
  6. On the Unique Solvability of Boundary Value Problems for an Abstract Euler–Poisson–Darboux Equations on a Finite Interval

    Abstract

    Sufficient conditions for the unique solvability of boundary value problems for a number of abstract singular equations that are formulated...

    Article 01 March 2023
  7. On the Unique Solvability of Initial–Boundary Value Problems for Parabolic Systems in Bounded Plane Domains with Nonsmooth Lateral Boundaries

    Abstract

    We consider the first and second initial–boundary value problems for inhomogeneous second-order parabolic systems with Dini continuous...

    E. A. Baderko, S. I. Sakharov in Differential Equations
    Article 01 May 2023
  8. Unique Solvability and Non-uniqueness in the Problem of Forward Motion of Bodies in a Two-Layer Fluid

    The classical ship-wave problem, describing forward motion of rigid bodies with a constant speed in an unbounded heavy fluid having a free surface,...

    Oleg V. Motygin in Water Waves
    Article 26 October 2023
  9. Errata of the Unique Solvability of the Absolute Value Equation

    A published counterexample motivates us to correct one of our theorems in the previously published work in Wu and Guo (J Optim Theory Appl...

    Article 27 January 2024
  10. To a Unique Solvability of a Problem with Integral Condition for Integro-Differential Equation

    Abstract

    Problem with integral condition for Fredholm integro-differential equation is considered. Conditions for a unique solvability of problem with...

    A. D. Abildayeva, R. M. Kaparova, A. T. Assanova in Lobachevskii Journal of Mathematics
    Article 13 December 2021
  11. Unique solvability of weakly homogeneous generalized variational inequalities

    An interesting observation is that most pairs of weakly homogeneous map**s do not possess strongly monotonic property, which is one of the key...

    Xueli Bai, Mengmeng Zheng, Zheng-Hai Huang in Journal of Global Optimization
    Article 29 May 2021
  12. On the Solvability of Linear Differential Operators on Vector Bundles over a Manifold

    Abstract

    A necessary and sufficient condition is established for the closedness of the range or surjectivity of a differential operator acting on...

    M. S. Smirnov in Differential Equations
    Article 01 December 2023
  13. Local Unique Solvability of a Quasilinear Equation with the Dzhrbashyan–Nersesyan Derivatives

    Abstract

    The existence of a unique local solution for an initial problem to a quasilinear equation in a Banach space with the Dzhrbashyan–Nersesyan...

    M. V. Plekhanova, E. M. Izhberdeeva in Lobachevskii Journal of Mathematics
    Article 01 June 2022
  14. On the Unique Solvability of a Boundary Value Problem for Systems of Loaded Integro-Differential Equations with Involution

    Abstract

    In this paper, we consider a boundary value problems for a systems of loaded integro-differential equations with an involutory...

    K. I. Usmanov, K. Zh. Nazarova, Zh. S. Yerkisheva in Lobachevskii Journal of Mathematics
    Article 13 December 2021
  15. Solvability of Linear Differential Equations

    Abstract

    We propose a new approach to the solvability of ordinary as well as partial differential equations in the theory of linear differential...

    V. S. Mokeichev, A. M. Sidorov in Differential Equations
    Article 01 November 2023
  16. Unique Solvability of Direct and Inverse Problems for Degenerate Parabolic Equations in the Multidimensional Case

    We study the inverse problem of recovering the source function in a degenerate parabolic equation with many spatial variables. An additional integral...

    Article 01 January 2023
  17. On the Solvability of Initial and Boundary Value Problems for Abstract Functional-Differential Euler–Poisson–Darboux Equations

    Abstract

    In a Banach space, we consider the Cauchy problem and the Dirichlet and Neumann boundary value problems for a functional-differential...

    A. V. Glushak in Differential Equations
    Article 01 March 2024
  18. On the Solvability of Boundary Value Problems for an Abstract Singular Equations on a Finite Interval

    Abstract

    Sufficient conditions for the unique solvability of boundary value problems for a number of abstract singular equations that are formulated...

    Article 01 August 2023
  19. Solvability of the Generalized Ionkin Problem for Differential Equations with Multiple Characteristics

    We study the solvability of nonlocal spatial boundary value problems with generalized Samarskii–Ionkin condition. We prove the existence and...

    Alexandr Kozhanov, Dilshod Mamanazarov in Journal of Mathematical Sciences
    Article 28 May 2024
  20. On the Solvability of Heat Boundary Value Problems in Sobolev Spaces

    Abstract

    In a domain, degenerating into a point at the initial moment of time, we consider a boundary value problem (BVP) of heat conduction that is a...

    M. T. Jenaliyev, M. T. Kosmakova, Zh. M. Tuleutaeva in Lobachevskii Journal of Mathematics
    Article 01 August 2022
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