Subjects -> MATHEMATICS (Total: 1075 journals)     - APPLIED MATHEMATICS (86 journals)    - GEOMETRY AND TOPOLOGY (23 journals)    - MATHEMATICS (794 journals)    - MATHEMATICS (GENERAL) (43 journals)    - NUMERICAL ANALYSIS (23 journals)    - PROBABILITIES AND MATH STATISTICS (106 journals) MATHEMATICS (794 journals)            First | 1 2 3 4
 Showing 401 - 538 of 538 Journals sorted alphabetically Journal of Discrete Mathematics       (Followers: 1) Journal of Dynamics and Differential Equations Journal of Engineering Mathematics       (Followers: 2) Journal of Evolution Equations Journal of Experimental Algorithmics       (Followers: 1) Journal of Flood Risk Management       (Followers: 12) Journal of Formalized Reasoning       (Followers: 2) Journal of Function Spaces Journal of Functional Analysis       (Followers: 2) Journal of Geochemical Exploration       (Followers: 1) Journal of Geological Research       (Followers: 1) Journal of Geovisualization and Spatial Analysis Journal of Global Optimization       (Followers: 6) Journal of Global Research in Mathematical Archives       (Followers: 1) Journal of Group Theory       (Followers: 2) Journal of Homotopy and Related Structures Journal of Honai Math Journal of Humanistic Mathematics       (Followers: 1) Journal of Hyperbolic Differential Equations Journal of Indian Council of Philosophical Research Journal of Industrial Mathematics       (Followers: 2) Journal of Inequalities and Applications Journal of Infrared, Millimeter and Terahertz Waves       (Followers: 2) Journal of Integrable Systems       (Followers: 1) Journal of K-Theory Journal of Knot Theory and Its Ramifications       (Followers: 1) Journal of Kufa for Mathematics and Computer       (Followers: 1) Journal of Liquid Chromatography & Related Technologies       (Followers: 7) Journal of Logical and Algebraic Methods in Programming Journal of Manufacturing Systems       (Followers: 4) Journal of Mathematical Analysis and Applications       (Followers: 4) Journal of mathematical and computational science       (Followers: 7) Journal of Mathematical and Fundamental Sciences Journal of Mathematical Behavior       (Followers: 2) Journal of Mathematical Chemistry       (Followers: 3) Journal of Mathematical Cryptology       (Followers: 1) Journal of Mathematical Extension       (Followers: 3) Journal of Mathematical Finance       (Followers: 7) Journal of Mathematical Imaging and Vision       (Followers: 6) Journal of Mathematical Logic       (Followers: 2) Journal of Mathematical Modelling and Algorithms       (Followers: 1) Journal of Mathematical Neuroscience       (Followers: 9) Journal of Mathematical Sciences Journal of Mathematical Sciences and Applications       (Followers: 2) Journal of Mathematical Sociology       (Followers: 3) Journal of Mathematics Journal of Mathematics and Statistics       (Followers: 8) Journal of Mathematics and the Arts       (Followers: 2) Journal of Mathematics in Industry Journal of Mathematics Research       (Followers: 6) Journal of Metallurgy       (Followers: 7) Journal of Modern Mathematics Frontier Journal of Multidisciplinary Modeling and Optimization Journal of Multivariate Analysis       (Followers: 13) Journal of Natural Sciences and Mathematics Research Journal of Nonlinear Analysis and Optimization : Theory & Applications       (Followers: 4) Journal of Nonlinear Mathematical Physics       (Followers: 1) Journal of Nonlinear Science       (Followers: 1) Journal of Numerical Cognition Journal of Numerical Mathematics       (Followers: 2) Journal of Optimization       (Followers: 4) Journal of Peridynamics and Nonlocal Modeling Journal of Problem Solving       (Followers: 2) Journal of Progressive Research in Mathematics       (Followers: 1) Journal of Pseudo-Differential Operators and Applications Journal of Pure and Applied Algebra       (Followers: 4) Journal of Quantitative Analysis in Sports       (Followers: 8) Journal of Quantitative Linguistics       (Followers: 6) Journal of Scientific Computing       (Followers: 18) Journal of Scientific Research Journal of Symbolic Computation       (Followers: 1) Journal of the Australian Mathematical Society Journal of the Egyptian Mathematical Society Journal of the European Mathematical Society       (Followers: 1) Journal of the Indian Mathematical Society       (Followers: 1) Journal of the Institute of Mathematics of Jussieu Journal of the London Mathematical Society       (Followers: 2) Journal of the Nigerian Mathematical Society       (Followers: 1) Journal of Theoretical and Applied Physics       (Followers: 8) Journal of Topology and Analysis Journal of Transport and Supply Chain Management       (Followers: 14) Journal of Turbulence       (Followers: 7) Journal of Uncertainty Analysis and Applications Journal of Universal Mathematics Journal of Urban Regeneration & Renewal       (Followers: 11) Journal of Water and Land Development       (Followers: 3) JRAMathEdu : Journal of Research and Advances in Mathematics Education       (Followers: 4) JUMLAHKU : Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan       (Followers: 1) JURING (Journal for Research in Mathematics Learning)       (Followers: 1) Jurnal Ilmiah AdMathEdu Jurnal Matematika       (Followers: 1) Jurnal Matematika Integratif Jurnal Matematika, Sains, Dan Teknologi Jurnal Natural Jurnal Pendidikan Matematika Raflesia Jurnal Penelitian Pembelajaran Matematika Sekolah Jurnal Penelitian Sains (JPS) Jurnal Riset Pendidikan Matematika Jurnal Sains Matematika dan Statistika Jurnal Tadris Matematika Jurnal Teknologi dan Sistem Komputer Kreano, Jurnal Matematika Kreatif-Inovatif       (Followers: 5) Le Matematiche Learning and Teaching Mathematics       (Followers: 7) Lettera Matematica Lietuvos Matematikos Rinkinys       (Followers: 1) Limits : Journal of Mathematics and Its Applications       (Followers: 1) Linear Algebra and its Applications       (Followers: 23) Linear and Multilinear Algebra       (Followers: 8) Lithuanian Mathematical Journal LMS Journal of Computation and Mathematics Lobachevskii Journal of Mathematics Logic and Analysis Logic Journal of the IGPL Logica Universalis manuscripta mathematica MaPan : Jurnal Matematika dan Pembelajaran Marine Genomics       (Followers: 2) Matemáticas, Educación y Sociedad Matematicheskie Zametki Matematika Matematychni Studii Mathematica Eterna Mathematica Scandinavica       (Followers: 1) Mathematica Slovaca       (Followers: 1) Mathematical and Computational Forestry & Natural-Resource Sciences Mathematical Communications Mathematical Computation       (Followers: 1) Mathematical Geosciences       (Followers: 3) Mathematical Medicine and Biology: A Journal of the IMA       (Followers: 1) Mathematical Methods in the Applied Sciences       (Followers: 4) Mathematical Methods of Statistics       (Followers: 4) Mathematical Modelling and Analysis       (Followers: 1) Mathematical Modelling in Civil Engineering       (Followers: 5) Mathematical Modelling of Natural Phenomena       (Followers: 1) Mathematical Models and Methods in Applied Sciences       (Followers: 2) Mathematical Notes Mathematical Proceedings of the Cambridge Philosophical Society       (Followers: 1) Mathematical Programming Computation       (Followers: 3) Mathematical Sciences Mathematical Social Sciences       (Followers: 1) Mathematical Theory and Modeling       (Followers: 13) Mathematical Thinking and Learning       (Followers: 3) Mathematics and Statistics       (Followers: 5) Mathematics Education Forum Chitwan       (Followers: 1) Mathematics Education Journal       (Followers: 1) Mathematics Education Research Journal       (Followers: 17) Mathematics in Science and Engineering Mathematics of Control, Signals, and Systems (MCSS)       (Followers: 5) Mathematics of Quantum and Nano Technologies Mathématiques et sciences humaines       (Followers: 7) Mathematische Annalen       (Followers: 1) Mathematische Nachrichten       (Followers: 1) Mathematische Semesterberichte Mathematische Zeitschrift       (Followers: 1) MATI : Mathematical Aspects of Topological Indeces MATICS       (Followers: 2) Matrix Science Mathematic       (Followers: 1) Measurement Science Review       (Followers: 3) Mediterranean Journal of Mathematics Memetic Computing Mendel : Soft Computing Journal Metaheuristics Metals and Materials International Metascience       (Followers: 1) Milan Journal of Mathematics Mitteilungen der DMV MLQ- Mathematical Logic Quarterly Monatshefte fur Mathematik Moroccan Journal of Pure and Applied Analysis       (Followers: 4) Moscow University Mathematics Bulletin MSOR Connections       (Followers: 1) Multiscale Modeling and Simulation       (Followers: 3) MUST : Journal of Mathematics Education, Science and Technology       (Followers: 1) Nagoya Mathematical Journal Nano Research       (Followers: 3) Nanotechnologies in Russia       (Followers: 1) Natural Resource Modeling New Mathematics and Natural Computation Nonlinear Analysis : Modelling and Control       (Followers: 1) Nonlinear Analysis : Theory, Methods & Applications       (Followers: 1) Nonlinear Analysis: Hybrid Systems Nonlinear Analysis: Real World Applications       (Followers: 2) Nonlinear Differential Equations and Applications NoDEA Nonlinear Engineering Nonlinear Oscillations       (Followers: 1) North Carolina Journal of Mathematics and Statistics North-Holland Mathematical Library       (Followers: 1) North-Holland Mathematics Studies North-Holland Series in Applied Mathematics and Mechanics       (Followers: 1) Note di Matematica NTM Zeitschrift für Geschichte der Wissenschaften, Technik und Medizin       (Followers: 4) Numeracy : Advancing Education in Quantitative Literacy Numerical Analysis and Applications       (Followers: 1) Numerical Functional Analysis and Optimization       (Followers: 2) Numerical Linear Algebra with Applications       (Followers: 7) Numerical Mathematics : Theory, Methods and Applications Numerische Mathematik Open Journal of Discrete Mathematics       (Followers: 5) Open Journal of Modelling and Simulation       (Followers: 1)

First | 1 2 3 4

Similar Journals
 Journal of Pseudo-Differential Operators and ApplicationsJournal Prestige (SJR): 0.664 Citation Impact (citeScore): 1Number of Followers: 0      Hybrid journal (It can contain Open Access articles) ISSN (Print) 1662-9981 - ISSN (Online) 1662-999X Published by Springer-Verlag  [2570 journals]
• On wavelet multipliers and Landau–Pollak–Slepian operators on locally
compact abelian topological groups
• Abstract: Abstract In this paper, we define the wavelet multiplier and Landau–Pollak–Slepian (L.P.S) operators on the Hilbert space $$L^2(G)$$ , where G is a locally compact abelian topological group and investigate some of their properties. In particular, we show that they are bounded linear operators, and are in Schatten p-class spaces, $$1 \le p \le \infty$$ , and we determine their trace class.
PubDate: 2019-03-06

• Decay estimates for the double dispersion equation with initial data in
real Hardy spaces
• Abstract: Abstract We study the Cauchy problem for the linear double dispersion equation \begin{aligned} u_{tt}-\Delta u_{tt}+\Delta ^2 u-\Delta u-\Delta u_t =0, \quad t\ge 0,\ x\in {\mathbb {R}}^n \end{aligned} and we derive long time decay estimates for the solution in  $$L^p$$ spaces and in real Hardy spaces. We employ the obtained results to study the equation with nonlinearity  $$\Delta f(u)$$ and nonsmooth f.
PubDate: 2019-03-02

• Shubin type Fourier integral operators and evolution equations
• Abstract: Abstract We study the Cauchy problem for an evolution equation of Schrödinger type. The Hamiltonian is the Weyl quantization of a real homogeneous quadratic form with a pseudodifferential perturbation of negative order from Shubin’s class. We prove that the propagator is a Fourier integral operator of Shubin type of order zero. Using results for such operators and corresponding Lagrangian distributions, we study the propagator and the solution, and derive phase space estimates for them.
PubDate: 2019-03-02

• Introducing the windowed Fourier frames technique for obtaining the
approximate solution of the coupled system of differential equations
• Abstract: Abstract This paper is devoted to introduce an efficient solver using a combination of the symbol of the operator and the windowed Fourier frames (WFFs) of the coupled system of second order ordinary differential equations. The given system has a basic importance in modeling various phenomena like, Cascades and Compartment Analysis, Pond Pollution, Home Heating, Chemostats and Microorganism Culturing, Nutrient Flow in an Aquarium, Biomass Transfer and others. The proposed method reduces the system of differential equations to a system of algebraic equations in the coefficients of WFFs. The introduced method is computer oriented with highly accurate solution. To demonstrate the efficiency of the proposed method, two examples are presented and the results are displayed graphically. Finally, we convert the presented coupled systems of BVPs to a first order system of ODEs to compare the obtained numerical solution with those solutions using the fourth-order Runge–Kutta method (RK4).
PubDate: 2019-03-01

• A generalized Levi condition for weakly hyperbolic Cauchy problems with
coefficients low regular in time and smooth in space
• Abstract: Abstract We consider the Cauchy problem for weakly hyperbolic m-th order partial differential equations with coefficients low-regular in time and smooth in space. It is well-known that in general one has to impose Levi conditions to get $$C^\infty$$ or Gevrey well-posedness even if the coefficients are smooth. We use moduli of continuity to describe the regularity of the coefficients with respect to time, weight sequences for the characterization of their regularity with respect to space and weight functions to define the solution spaces. Furthermore, we propose a generalized Levi condition that models the influence of multiple characteristics more freely. We establish sufficient conditions for the well-posedness of the Cauchy problem, that link the Levi condition as well as the modulus of continuity and the weight sequence of the coefficients to the weight function of the solution space. Additionally, we obtain that the influences of the Levi condition and the low regularity of coefficients on the weight function of the solution space are independent of each other.
PubDate: 2019-03-01

• On the images of Dunkl–Sobolev spaces under the Schrödinger semigroup
associated to Dunkl operators
• Abstract: Abstract In this article, we consider the Schrödinger semigroup related to the Dunkl–Laplacian $$\Delta _{\mu }$$ (associated to finite reflection group G) on $$\mathbb {R}^n$$ . We characterize the image of $$L^2(\mathbb {R}^n, e^{u^2} h_{\mu }(u) du)$$ under the Schrödinger semigroup as a reproducing kernel Hilbert space. We define Dunkl–Sobolev space in $$L^2(\mathbb {R}^n, e^{u^2} h_{\mu }(u) du)$$ and characterize it’s image under the Schrödinger semigroup associated to $$G=\mathbb {Z}_2^n$$ as a reproducing kernel Hilbert space up to equivalence of norms. Also we provide similar results for Schrödinger semigroup associated to Dunkl–Hermite operator.
PubDate: 2019-03-01

• On compactness of commutator of multiplication and pseudodifferential
operator
• Abstract: Abstract In this short note we show results on the compactness of the commutator of pseudodifferential operator and operator of multiplication in both $$\mathrm{L}^2$$ and $$\mathrm{L}^p$$ setting. Our results use the boundedness results of pseudodifferential operators by Hwang and Hwang-Lee, and the Krasnoselskij type interpolation lemma. We use the obtained results to construct a variant of microlocal defect functionals via pseudodifferential operators and derive its localisation principle.
PubDate: 2019-03-01

• On the convergence of the means spectral expansions corresponding to the
pseudo-differential operators for distributions from the
Sobolev–Liouville classes
• Abstract: Abstract We study the convergence of means of spectral expansions corresponding to positive self-adjoint elliptic pseudo-differential operators for distributions from the Sobolev–Liouville class.
PubDate: 2019-03-01

• Colombeau algebras without asymptotics
• Abstract: Abstract We present a construction of algebras of generalized functions of Colombeau-type which, instead of asymptotic estimates with respect to a regularization parameter, employs only topological estimates on certain spaces of kernels for its definition.
PubDate: 2019-03-01

• Weyl calculus in Wiener spaces and in QED
• Abstract: Abstract The concern of this article is a semiclassical Weyl calculus on an infinite dimensional Hilbert space H. If (i, H, B) is a Wiener triplet associated to H, the quantum state space will be the space of $$L^2$$ functions on B with respect to a Gaussian measure with h / 2 variance, where h is the semiclassical parameter. We prove the boundedness of our pseudodifferential operators (PDO) in the spirit of Calderón–Vaillancourt with an explicit bound, a Beals type characterization, and metaplectic covariance. An application to a model of quantum electrodynamics is added in the last section (Sect. 7), for fixed spin 1 / 2 particles interacting with the quantized electromagnetic field (photons). We prove that some observable time evolutions, the spin evolutions, the magnetic and electric evolutions when subtracting their free evolutions, are PDO in our class.
PubDate: 2019-03-01

• Study a class of nonlinear fractional non-autonomous evolution equations
with delay
• Abstract: Abstract In this paper, we deal with a class of nonlinear fractional non-autonomous evolution equations with delay by using Hilfer fractional derivative, which generalized the famous Riemann–Liouville fractional derivative. Combining techniques of fractional calculus, measure of noncompactness and some fixed point theorem, we obtain new existence result of mild solutions when the associated semigroup is not compact. Furthermore, the assumptions that the nonlinear term satisfies some growth condition and noncompactness measure condition. The results obtained improve and extend some related conclusions. Finally, two examples will be presented to illustrate the main results.
PubDate: 2019-03-01

• Well-posedness and asymptotic behavior of the time-dependent solution of
an M/G/1 queueing model
• Abstract: Abstract By using the Hille–Yosida theorem, Phillips theorem and Fattorini theorem we prove that the M/G/1 queueing model with vacations and multiple phases of operation, which is described by infinitely many partial differential equations with integral boundary conditions, has a unique positive time-dependent solution that satisfies the probability condition. Next, by studying the spectrum of the operator, which corresponds to the model, on the imaginary axis we prove that the time-dependent solution of the model strongly converges to its steady-state solution.
PubDate: 2019-03-01

• A method for solving ill-posed nonlocal problem for the elliptic equation
with data on the whole boundary
• Abstract: Abstract In this paper a nonlocal problem for the elliptic equation in a cylindrical domain is considered. It is shown that this problem is ill-posed as well as the Cauchy problem for the Laplace equation. The method of spectral expansion in eigenfunctions of the nonlocal problem for equations with involution establishes a criterion of the strong solvability of the considered nonlocal problem. It is shown that the ill-posedness of the nonlocal problem is equivalent to the existence of an isolated point of the continuous spectrum for a nonself-adjoint operator with involution.
PubDate: 2019-03-01

• Harmonic oscillator perturbed by a decreasing scalar potential
• Abstract: Abstract In this paper we study the perturbation $$L=H+V$$ , where $$H=-\frac{{{d}^{2m}}}{d{{x}^{2m}}}+{{x}^{2m}}$$ on $$\mathbb {R}$$ , $$m\in {{\mathbb {N}}^{*}}$$ and V is a decreasing scalar potential. Let $${{\lambda }_{k}}$$ be the $$k^{th}$$ eigenvalue of H. We suppose that the eigenvalues of L around $${{\lambda }_{k}}$$ can be written in the form $${{\lambda }_{k}}+{{\mu }_{k}}$$ . The main result of the paper is an asymptotic formula for fluctuation $$\{ {{\mu }_{k}} \}$$ which is given by a transformation of V. In the case $$m=1$$ we recover a result on the harmonic oscillator.
PubDate: 2019-02-28

• Uncertainty principle for the two sided quaternion windowed Fourier
transform
• Abstract: Abstract In this paper, we study the quaternion windowed Fourier transform and prove the Beckner’s uncertainty principle in term of entropy, Lieb uncertainty principle and the Heisenberg uncertainty principle for the quaternion windowed Fourier transform, the radar quaternion ambiguity function and the quaternion-Wigner transform.
PubDate: 2019-02-26

• Stability of logarithmic type for a Hadamard fractional differential
problem
• Abstract: Abstract We study the long-time behavior of solutions for a general class of nonlinear fractional differential equations. These equations involve Hadamard fractional derivatives of different orders. We determine sufficient conditions on the nonlinear terms which guarantee that solutions exist globally and decay to zero as a logarithmic function. For this purpose, we combine and generalize some versions of Gronwall–Bellman inequality, appropriate regularization techniques and several properties of the Hadamard fractional derivative. Our findings are illustrated by examples.
PubDate: 2019-02-25

• Beurling’s theorem for the quaternion Fourier transform
• Abstract: Abstract The two-sided quaternion Fourier transform satisfies some uncertainty principles similar to the Euclidean Fourier transform. A generalization of Beurling’s theorem, Hardy, Cowling–Price and Gelfand–Shilov theorems, is obtained for the two-sided quaternion Fourier transform.
PubDate: 2019-02-20

• A continuous frame representation for an abstract shearlet group
• Abstract: Let $${\mathbb {S}}$$ be a locally compact abstract shearlet group and $$\sigma :{\mathbb {S}}\rightarrow {\mathcal {U}}({\mathcal {H}})$$ be a representation of $${\mathbb {S}}$$ on a separable Hilbert space $${\mathcal {H}}$$ . We give a necessary and sufficient condition for the family of representation coefficients to be a continuous shearlet frame. Furthermore relations between continuous shearlet frames associated to a given representation and its irreducible sub-representations are investigated.
PubDate: 2019-02-18

• Pseudo-differential operators and existence of Gabor frames
• Abstract: Abstract We study from a pseudo-differential point of view the frame operator associated with a Gabor system. In particular we show how an application of the classical boundedness theorem of Calderón–Vaillancourt yields sufficient conditions for a Gabor system to form a frame in $$L^2\left( {\mathbb {R}}^d\right)$$ .
PubDate: 2019-02-15

• $$C^*$$ C ∗ -algebras, $$H^*$$ H ∗ -algebras and trace ideals of
pseudo-differential operators on locally compact, Hausdorff and abelian
groups
• Abstract: Abstract We define pseudo-differential operators on a locally compact, Hausdorff and abelian group G as natural extensions of pseudo-differential operators on $${\mathbb {R}}^n$$ . In particular, for pseudo-differential operators with symbols in $$L^2(G\times \widehat{G})$$ , where $$\widehat{G}$$ is the dual group of G, we give explicit formulas for the products and adjoints, characterize them as Hilbert–Schmidt operators on $$L^2(G)$$ and prove that they form a $$C^*$$ -algebra, which is also a $$H^*$$ -algebra. We give a characterization of trace class pseudo-differential operators in terms of symbols lying in a subspace of $$L^1(G\times \widehat{G})\cap L^2(G\times \widehat{G})$$ .
PubDate: 2019-02-13

JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762