Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
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    - MATHEMATICS (714 journals)
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    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 13)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 5)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 43)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 3)
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: 9)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 16)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access  
Advances in Geosciences (ADGEO)     Open Access   (Followers: 20)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 6)
Advances in Materials Science     Open Access   (Followers: 21)
Advances in Mathematical Physics     Open Access   (Followers: 6)
Advances in Mathematics     Full-text available via subscription   (Followers: 18)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 10)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 8)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 6)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 3)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 9)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 6)
Algorithms     Open Access   (Followers: 14)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access   (Followers: 1)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 6)
American Mathematical Monthly     Full-text available via subscription   (Followers: 3)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 12)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – 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: 15)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 5)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access   (Followers: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 16)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 3)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Armenian Journal of Mathematics     Open Access  
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 21)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     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: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 2)
Banach Journal of Mathematical Analysis     Hybrid Journal  
Basin Research     Hybrid Journal   (Followers: 6)
BIBECHANA     Open Access  
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
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  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
British Journal of Mathematics & Computer Science     Full-text available via subscription   (Followers: 1)
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 2)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 4)
Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics     Open Access  
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Cadernos do IME : Série Matemática     Open Access  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 1)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 1)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
ChemSusChem     Hybrid Journal   (Followers: 8)
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  
Ciencia     Open Access  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 20)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 3)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 6)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 3)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 11)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 10)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access  
Contributions to Discrete Mathematics     Open Access  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 11)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal  
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access  
Demographic Research     Open Access   (Followers: 14)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 35)
Desimal : Jurnal Matematika     Open Access  
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Diskretnaya Matematika     Full-text available via subscription  
Doklady Akademii Nauk     Open Access  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Differential Equations and Dynamical Systems
Journal Prestige (SJR): 0.306
Citation Impact (citeScore): 1
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0974-6870 - ISSN (Online) 0971-3514
Published by Springer-Verlag Homepage  [2467 journals]
  • On the Asymptotic Behavior of Thermoelastic Plate with Terms Concentrated
           in the Boundary

    • Free pre-print version: Loading...

      Abstract: Abstract In this paper we consider autonomous thermoelastic plate systems with Neumann boundary conditions when some reaction terms are concentrated in a neighborhood of the boundary and this neighborhood shrinks to boundary as a parameter \(\varepsilon\) goes to zero. We present some remarks on asymptotic behavior of the global attractors which lead us to conclude the lower semicontinuity of this attractors at \(\varepsilon\) equal to zero. We also prove the finite-dimensionality of the attractors.
      PubDate: 2022-10-30
       
  • Characterization of First Order 2-dim Neutral Delay Difference Systems

    • Free pre-print version: Loading...

      Abstract: Abstract This work is concerned with necessary and sufficient conditions for oscillation of all solutions of 2-dim first order neutral delay difference system with constant coefficient of the form: $$ \Delta \left[ \begin{array}{c} x(n)-px(n-m)\\ y(n)-py(n-m) \\ \end{array} \right] = \left[ \begin{array}{cc} a & b \\ c & d \\ \end{array} \right] \left[ \begin{array}{c} x(n-\alpha )\\ y(n-\beta )\\ \end{array} \right] , n\ge n_{0} $$ by constructing several suitable characteristic equations. Also, an effort has been made to apply some results to nonlinear neutral systems aheading linearized oscillation theory. Some examples are in the discussion to illustrate our results.
      PubDate: 2022-10-15
       
  • A Pursuit Game in a Closed Convex Set on a Euclidean Space

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      Abstract: Abstract This paper studies a pursuit differential game in a closed convex subset of the Euclidean space \({\mathbb {R}}^n.\) Players of the game consist of finite number of pursuers chasing to catch a single evader both of which moves according to certain first order differential equation. The differential equations involve control functions through which players make their inputs in the game. Each of the player’s control function is subject to the coordinate-wise integral constraint. Pursuers are deemed to catch the evader when the geometric position of at least one pursuer coincides with that of the evader. We describe strategies of the pursuers in phases and give formula for computing the time span of each phase. Moreover, we provide and conditions that ensure evader’s catch.
      PubDate: 2022-10-15
       
  • Explicit Solution of a Non-strictly Hyperbolic System with Discontinuous
           Flux Using a Scaling Argument

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      Abstract: Abstract In this paper, we consider the initial value problem for a \(2 \times 2\) system of non-strictly hyperbolic conservation laws. The first equation is a convex conservation law whose flux has linear growth at infinity and has an asymptotic limit under a scaling. The second equation is linear and exhibits measure-valued solution even if the initial data is smooth with compact support. We use a scaling argument to derive explicit formula of solution for the system with the asymptotic flux function where the second equation becomes linear with discontinuous coefficient. We also study properties of solution when the initial data is periodic with zero mean over the period. Our theory is illustrated using the Lax equation.
      PubDate: 2022-10-13
       
  • Existence of Weak Solutions for Weighted Robin Problem Involving $$p\left(
           .\right)$$ -biharmonic operator

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      Abstract: Abstract Using Mountain Pass Theorem, we consider the existence of weak solutions of weighted Robin problem involving \(p\left( .\right)\) -biharmonic operator $$\begin{aligned} \left\{ \begin{array}{cc} a\left( x\right) \Delta _{p\left( x\right) }^{2}u=\lambda b(x)\left u\right ^{q(x)-2}u, &{} in~\Omega \\ a(x)\left \Delta u\right ^{p(x)-2}\frac{\partial u}{\partial \upsilon }+\beta (x)\left u\right ^{p(x)-2}u=0, &{} on~\partial \Omega \end{array} \right. \end{aligned}$$ under some conditions in the space \(W_{a,b}^{2,p(.)}\left( \Omega \right) .\)
      PubDate: 2022-10-10
       
  • The Dynamics of the Flow of Blood in the Human Circulatory System

    • Free pre-print version: Loading...

      Abstract: Abstract This paper introduces a realistic framework for the blood flow dynamics in the human circulatory system, wherein blood changes its characteristics while flowing through different arteries, from elastic to muscular to rigid. We believe that this approach is significantly different from most of the literature of the related work, wherein the blood flow characteristics remain the same throughout its flow in an artery. Another interesting idea in this work is the introduction of a nonlinear relationship between flux and the pressure gradient that has been found appropriate for the blood flow in coronary arteries. Further, this work suggests to the researchers that if one considers the varying material properties of the blood that flows through the different constituent pipes (blood vessels), one would be able to gain adequate understanding on the vital issues in treating the problems related to blood circulation, such as blood clots, stenotic growth and bypass grafting surgeries.
      PubDate: 2022-10-05
       
  • Existence of Multiple Solutions to a Discrete Fourth Order Periodic
           Boundary Value Problem via Variational Method

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      Abstract: Abstract By using variational methods and critical point theory, we obtain criteria for the existence of at least three solutions for a generalized fourth order nonlinear difference equation together with periodic boundary conditions. Various special cases of the above problem are discussed. An example is included to illustrate the results.
      PubDate: 2022-10-01
       
  • Dynamical Behavior Analysis of the Leslie–Gower Model in Random
           Environment

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      Abstract: Abstract In this paper, a bi-dimensional continuous-time stochastic differential system of Leslie–Grower types is considered. The proposed predator-prey model with white noises is theoretically and numerically investigated. The global existence of the positive unique solution of the model is obtained. The boundedness in the sense of moments of the solution is shown. Some asymptotic properties of the stochastic system are also elaborated. New methodological approaches based on the statistical linearisation method as well as on the coupled and weighted procedures are elaborated. Numerical results of the density function for the stationary state are obtained.
      PubDate: 2022-10-01
       
  • On Some Boundary Value Problems for Fractional Feedback Control Systems

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      Abstract: Abstract We consider a nonlocal boundary value problem for a feedback control system governed by a fractional degenerate (Sobolev type) semilinear differential inclusion in a Banach space. To solve this problem, we introduce a multivalued integral operator whose fixed points determine its solutions and study the properties of this operator. It is demonstrated, in particular, that the operator is condensing with respect to an appropriate measure of noncompactness in a functional space. This makes it possible to formulate a general existence principle (Theorem 33) in terms of the topological degree theory. Theorem 34 gives an example of a concrete realization of this principle. As its corollary we get the existence of an optimal solution to our problem (Theorem 35). Some important particular cases including a nonlocal Cauchy problem, periodic and anti-periodic boundary value problems are presented. As example, we consider the existence of an optimal periodic solution for a fractional diffusion type degenerate control system.
      PubDate: 2022-10-01
       
  • Existence and Uniqueness of a Non-Negative Monotonic Solution of a
           Nonlinear Ordinary Differential Equation

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      Abstract: Abstract In this paper, we prove the existence and uniqueness of a non-negative monotonically increasing solution of the boundary value problem (BVP) $$\begin{aligned}&H''(\eta )-H^p(\eta )H'(\eta )+\frac{\eta }{2}H'(\eta )+\frac{1}{2p}H(\eta )=0,\quad \eta >0,\\&H(0)=0,\quad \lim _{\eta \rightarrow +\infty }\eta ^{-\frac{1}{p}}H(\eta )=1, \end{aligned}$$ using a shooting argument for \(p>1\) . This BVP arises when we construct the large time asymptotic solution of the modified Burgers equation, using the method of matched asymptotic expansions, on the quarter plane.
      PubDate: 2022-10-01
       
  • A New Version of Fermi Walker Derivative with Constant Energy for Normal
           Image of Slant Helix in the Lie Groups

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      Abstract: Abstract Fermi–Walker derivative and energy of curves play an important role in sensible guidelines. In this study we formulate a new energy for Fermi–Walker (FW) derivative of normal spherical image by using FW parallelism in Lie groups. By means of innovative illustration, we get new necessary and sufficient condition for the given field to be FW parallel. We give some partial differential equations. Moreover, we have some energy construction for normal spherical image in Lie groups.
      PubDate: 2022-10-01
       
  • A New Computational Method Based on Bernstein Operational Matrices for
           Solving Two-Dimensional Linear Stochastic Volterra Integral Equations

    • Free pre-print version: Loading...

      Abstract: Abstract This paper is concerned with obtaining the approximate numerical solution of two-dimensional linear stochastic Volterra integral equation by using two-dimensional Bernstein polynomials as basis. Properties of these polynomials and operational matrix of integration together with the product operational matrix are utilized to transform the integral equation to a matrix equation which corresponds to a system of linear algebraic equations with unknown Bernstein coefficients. Some theorems are included to show the convergence and advantage of the proposed method. The numerical example illustrates the efficiency and accuracy of the method.
      PubDate: 2022-10-01
       
  • Uniqueness of $$\beta $$ -Viscosity Solutions of Hamilton–Jacobi
           Equations and Applications to a Class of Optimal Control Problems

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      Abstract: Abstract This paper is concerned with an infinite horizon optimal control with unbounded value functions for a class of Hamilton–Jacobi equations (HJEs) in Banach spaces. Based on the uniqueness of \(\beta \) -viscosity solutions of HJEs, which is first established in this paper, necessary and sufficient optimality conditions are derived.
      PubDate: 2022-10-01
       
  • Monotone Iterative Technique for Nonlocal Impulsive Finite Delay
           Differential Equations of Fractional Order

    • Free pre-print version: Loading...

      Abstract: Abstract The paper is concerned with the extension of a monotone iterative technique to impulsive finite delay differential equations of fractional order with a nonlocal initial condition in an ordered Banach space. We study the existence of extremal mild solutions with or without assuming the compactness of a semigroup and also prove the uniqueness of the mild solution of the system. The results are obtained with the help of fractional calculus, a measure of non-compactness, the semigroup theory and monotone iterative technique. Finally, an example is provided to show the application of our main.
      PubDate: 2022-10-01
       
  • On the Number of Limit Cycles Bifurcated from Some Non-Polynomial
           Hamiltonian Systems

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      Abstract: Abstract This paper studies the limit cycles produced by small perturbations of certain planar Hamiltonian systems. The limit cycles under consideration correspond to critical levels of the Hamiltonian, that is they are located in a small vicinity of a separatrix contour or a critical point. Two most interesting facts in the paper are that the Hamiltonian function is not a polynomial and that the system under consideration comes from a model of oscillator with a pair of irrational nonlinearities, which implies the transition from smooth to discontinuous dynamics. This model has been proposed recently by Han et al. in a paper published in 2012.
      PubDate: 2022-10-01
       
  • Coupled System of Second-Order Stochastic Neutral Differential Inclusions
           Driven by Wiener Process and Poisson Jumps

    • Free pre-print version: Loading...

      Abstract: Abstract In this paper we prove the existence of mild solutions for a second-order impulsive semilinear stochastic differential inclusion with an infinite-dimensional standard cylindrical Wiener process and Poisson jumps. We consider non convex-valued cases.
      PubDate: 2022-10-01
       
  • Existence of Solutions to Sobolev Type Nonlocal Nonlinear Functional
           Integrodifferential Equations Involving Caputo Derivative

    • Free pre-print version: Loading...

      Abstract: Abstract In this article, we consider a nonlinear Sobolev type fractional functional integrodifferential equations in a Banach space along with a nonlocal condition. Sufficient conditions for existence, uniqueness and dependence on initial data of local solutions of considered problem are derived by employing fixed point techniques and theory of classical semigroup. Further, we also render the criteria for existence of global solution. At the end, we provide an application to elaborate the obtained results.
      PubDate: 2022-10-01
       
  • Multistep Methods for the Numerical Simulation of Two-Dimensional
           Burgers’ Equation

    • Free pre-print version: Loading...

      Abstract: Abstract In this paper, a numerical technique is proposed to solve a two-dimensional coupled Burgers’ equation. The two-dimensional Cole–Hopf transformation is applied to convert the nonlinear coupled Burgers’ equation into a two-dimensional linear diffusion equation with Neumann boundary conditions. The diffusion equation with Neumann boundary conditions is semi-discretized using MOL in both x and y directions. This process yielded the system of ordinary differential equations in the time variable. Multistep methods namely backward differentiation formulas of order one, two and three are employed to solve the ode system. Efficiency and accuracy of the proposed methods are verified through numerical experiments. The proposed schemes are simple, accurate, efficient and easy to implement.
      PubDate: 2022-10-01
       
  • Block-Pulse Functions in the Method of Successive Approximations for
           Nonlinear Fuzzy Fredholm Integral Equations

    • Free pre-print version: Loading...

      Abstract: Abstract In this paper, we propose a method of successive approximations for nonlinear fuzzy Fredholm integral equations of the second kind. The main approximation tool is based on fuzzy block-pulse functions. The error estimation of the proposed method is established. A number of illustrative examples that demonstrate accuracy and convergence is given as well.
      PubDate: 2022-10-01
       
  • Exponential Basis Approximated Fuzzy Components High-Resolution Compact
           Discretization Technique for 2D Convection–Diffusion Equations

    • Free pre-print version: Loading...

      Abstract: Abstract This article examines a compact scheme employing fuzzy transform via exponential basis to solve nonlinear stationary convection–diffusion equations. The scheme executes approximated fuzzy components which estimate the solution values with fourth-order accuracy in an optimal computing time. Such an arrangement associates the approximated fuzzy components with solution values by a linear system. The Jacobian matrices in the scheme are monotone and irreducible. The proof of convergence is briefly discussed. Numerical simulations with nonlinear and linear convection–diffusion equations occurring in quantum mechanics and rheological Carreau fluid will be examined to corroborate the new scheme's utility and efficiency of computational convergence order.
      PubDate: 2022-10-01
       
 
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