Subjects -> MATHEMATICS (Total: 1118 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (819 journals)
    - MATHEMATICS (GENERAL) (45 journals)
    - NUMERICAL ANALYSIS (26 journals)
    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (819 journals)            First | 1 2 3 4 5     

Showing 401 - 538 of 538 Journals sorted alphabetically
Journal of Geological Research     Open Access   (Followers: 1)
Journal of Geovisualization and Spatial Analysis     Hybrid Journal  
Journal of Global Optimization     Hybrid Journal   (Followers: 7)
Journal of Global Research in Mathematical Archives     Open Access   (Followers: 1)
Journal of Homotopy and Related Structures     Hybrid Journal  
Journal of Honai Math     Open Access  
Journal of Humanistic Mathematics     Open Access   (Followers: 1)
Journal of Hyperbolic Differential Equations     Hybrid Journal  
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Industrial Mathematics     Open Access   (Followers: 2)
Journal of Inequalities and Applications     Open Access  
Journal of Infrared, Millimeter and Terahertz Waves     Hybrid Journal   (Followers: 3)
Journal of Integrable Systems     Open Access   (Followers: 1)
Journal of K-Theory     Full-text available via subscription  
Journal of Knot Theory and Its Ramifications     Hybrid Journal   (Followers: 2)
Journal of Liquid Chromatography & Related Technologies     Hybrid Journal   (Followers: 7)
Journal of Logical and Algebraic Methods in Programming     Hybrid Journal   (Followers: 1)
Journal of Manufacturing Systems     Full-text available via subscription   (Followers: 4)
Journal of Mathematical Analysis and Applications     Full-text available via subscription   (Followers: 5)
Journal of mathematical and computational science     Open Access   (Followers: 7)
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Mathematical Behavior     Hybrid Journal   (Followers: 4)
Journal of Mathematical Chemistry     Hybrid Journal   (Followers: 5)
Journal of Mathematical Extension     Open Access   (Followers: 3)
Journal of Mathematical Finance     Open Access   (Followers: 9)
Journal of Mathematical Imaging and Vision     Hybrid Journal   (Followers: 7)
Journal of Mathematical Logic     Hybrid Journal   (Followers: 3)
Journal of Mathematical Modelling and Algorithms     Hybrid Journal   (Followers: 1)
Journal of Mathematical Neuroscience     Open Access   (Followers: 10)
Journal of Mathematical Sciences     Hybrid Journal   (Followers: 1)
Journal of Mathematical Sciences and Applications     Open Access   (Followers: 4)
Journal of Mathematical Sociology     Hybrid Journal   (Followers: 3)
Journal of Mathematics     Open Access  
Journal of Mathematics and Statistics     Open Access   (Followers: 8)
Journal of Mathematics and Statistics Studies     Open Access   (Followers: 3)
Journal of Mathematics and the Arts     Hybrid Journal   (Followers: 2)
Journal of Mathematics Education at Teachers College     Open Access   (Followers: 4)
Journal of Mathematics in Industry     Open Access  
Journal of Mathematics Research     Open Access   (Followers: 6)
Journal of Metallurgy     Open Access   (Followers: 8)
Journal of Modern Mathematics Frontier     Open Access  
Journal of Multidisciplinary Modeling and Optimization     Open Access   (Followers: 1)
Journal of Multivariate Analysis     Hybrid Journal   (Followers: 13)
Journal of Natural Sciences and Mathematics Research     Open Access  
Journal of Nonlinear Analysis and Optimization : Theory & Applications     Open Access   (Followers: 4)
Journal of Nonlinear Mathematical Physics     Hybrid Journal   (Followers: 3)
Journal of Nonlinear Science     Hybrid Journal   (Followers: 1)
Journal of Numerical Cognition     Open Access   (Followers: 1)
Journal of Optimization     Open Access   (Followers: 5)
Journal of Peridynamics and Nonlocal Modeling     Hybrid Journal  
Journal of Problem Solving     Open Access   (Followers: 2)
Journal of Progressive Research in Mathematics     Open Access   (Followers: 5)
Journal of Pseudo-Differential Operators and Applications     Hybrid Journal  
Journal of Pure and Applied Algebra     Full-text available via subscription   (Followers: 4)
Journal of Quantitative Linguistics     Hybrid Journal   (Followers: 6)
Journal of Scientific Computing     Hybrid Journal   (Followers: 19)
Journal of Scientific Research     Open Access  
Journal of Symbolic Computation     Hybrid Journal   (Followers: 2)
Journal of the Australian Mathematical Society     Full-text available via subscription  
Journal of the Egyptian Mathematical Society     Open Access  
Journal of the European Mathematical Society     Full-text available via subscription   (Followers: 2)
Journal of the Indian Mathematical Society     Hybrid Journal   (Followers: 1)
Journal of the Institute of Mathematics of Jussieu     Hybrid Journal  
Journal of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Journal of the Nigerian Mathematical Society     Open Access   (Followers: 1)
Journal of Theoretical and Applied Physics     Open Access   (Followers: 9)
Journal of Topology and Analysis     Hybrid Journal  
Journal of Transport and Supply Chain Management     Open Access   (Followers: 16)
Journal of Turbulence     Hybrid Journal   (Followers: 10)
Journal of Uncertainty Analysis and Applications     Open Access   (Followers: 1)
Journal of Universal Mathematics     Open Access  
Journal of Urban Regeneration & Renewal     Full-text available via subscription   (Followers: 11)
JRAMathEdu : Journal of Research and Advances in Mathematics Education     Open Access   (Followers: 7)
JUMLAHKU : Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan     Open Access   (Followers: 2)
JURING (Journal for Research in Mathematics Learning)     Open Access   (Followers: 1)
Jurnal Ilmiah AdMathEdu     Open Access  
Jurnal Matematika     Open Access   (Followers: 1)
Jurnal Matematika Integratif     Open Access  
Jurnal Matematika, Sains, Dan Teknologi     Open Access  
Jurnal Natural     Open Access  
Jurnal Pendidikan Matematika Raflesia     Open Access  
Jurnal Penelitian Pembelajaran Matematika Sekolah     Open Access  
Jurnal Penelitian Sains (JPS)     Open Access  
Jurnal Riset Pendidikan Matematika     Open Access  
Jurnal Sains Matematika dan Statistika     Open Access  
Jurnal Tadris Matematika     Open Access  
Jurnal Teknologi dan Sistem Komputer     Open Access  
Kontinu : Jurnal Penelitian Didaktik Matematika     Open Access   (Followers: 2)
Kreano, Jurnal Matematika Kreatif-Inovatif     Open Access   (Followers: 6)
Le Matematiche     Open Access  
Lettera Matematica     Hybrid Journal  
Lietuvos Matematikos Rinkinys     Open Access   (Followers: 3)
Limits : Journal of Mathematics and Its Applications     Open Access   (Followers: 1)
Linear Algebra and its Applications     Full-text available via subscription   (Followers: 24)
Linear and Multilinear Algebra     Hybrid Journal   (Followers: 8)
Lithuanian Mathematical Journal     Hybrid Journal  
LMS Journal of Computation and Mathematics     Free  
Lobachevskii Journal of Mathematics     Open Access  
Logic and Analysis     Hybrid Journal   (Followers: 1)
Logic Journal of the IGPL     Hybrid Journal   (Followers: 1)
Logica Universalis     Hybrid Journal  
manuscripta mathematica     Hybrid Journal  
MaPan : Jurnal Matematika dan Pembelajaran     Open Access  
Marine Genomics     Hybrid Journal   (Followers: 2)
Matemáticas, Educación y Sociedad     Open Access  
Matematicheskie Zametki     Full-text available via subscription  
Mathematica Eterna     Open Access  
Mathematica Scandinavica     Full-text available via subscription   (Followers: 1)
Mathematical Analysis and its Contemporary Applications     Open Access  
Mathematical and Computational Forestry & Natural-Resource Sciences     Free  
Mathematical Communications     Open Access  
Mathematical Computation     Open Access   (Followers: 1)
Mathematical Geosciences     Hybrid Journal   (Followers: 4)
Mathematical Journal of Interdisciplinary Sciences     Open Access   (Followers: 1)
Mathematical Medicine and Biology: A Journal of the IMA     Hybrid Journal   (Followers: 2)
Mathematical Methods in the Applied Sciences     Hybrid Journal   (Followers: 5)
Mathematical Methods of Statistics     Hybrid Journal   (Followers: 4)
Mathematical Modelling and Analysis     Open Access   (Followers: 1)
Mathematical Modelling of Natural Phenomena     Open Access   (Followers: 2)
Mathematical Models and Methods in Applied Sciences     Hybrid Journal   (Followers: 2)
Mathematical Models in Engineering     Open Access  
Mathematical Notes     Hybrid Journal  
Mathematical Proceedings of the Cambridge Philosophical Society     Full-text available via subscription   (Followers: 2)
Mathematical Programming Computation     Hybrid Journal   (Followers: 3)
Mathematical Sciences     Open Access  
Mathematical Social Sciences     Hybrid Journal   (Followers: 1)
Mathematical Theory and Modeling     Open Access   (Followers: 13)
Mathematical Thinking and Learning     Hybrid Journal   (Followers: 4)
Mathematics and Statistics     Open Access   (Followers: 5)
Mathematics Education Forum Chitwan     Open Access   (Followers: 2)
Mathematics Education Journal     Open Access   (Followers: 3)
Mathematics Education Research Journal     Partially Free   (Followers: 20)
Mathematics in Science and Engineering     Full-text available via subscription  
Mathematics of Control, Signals, and Systems (MCSS)     Hybrid Journal   (Followers: 5)
Mathématiques et sciences humaines     Open Access   (Followers: 6)
Mathematische Annalen     Hybrid Journal   (Followers: 1)
Mathematische Nachrichten     Hybrid Journal   (Followers: 1)
Mathematische Semesterberichte     Hybrid Journal  
Mathematische Zeitschrift     Hybrid Journal   (Followers: 1)
MathLAB Journal     Open Access   (Followers: 4)
MATICS     Open Access   (Followers: 2)
Matrix Science Mathematic     Open Access   (Followers: 1)
Measurement Science Review     Open Access   (Followers: 3)
Mediterranean Journal of Mathematics     Hybrid Journal  
Memetic Computing     Hybrid Journal  
Mendel : Soft Computing Journal     Open Access  
Metaheuristics     Hybrid Journal  
Metals and Materials International     Hybrid Journal  
Metascience     Hybrid Journal   (Followers: 1)
Metrology and Instruments / Метрологія та прилади     Open Access   (Followers: 1)
Milan Journal of Mathematics     Hybrid Journal  
MLQ- Mathematical Logic Quarterly     Hybrid Journal   (Followers: 1)
Modelling in Civil and Environmental Engineering     Open Access   (Followers: 5)
MONA : Matematik- og Naturfagsdidaktik     Hybrid Journal   (Followers: 4)
Monatshefte fur Mathematik     Hybrid Journal  
Moroccan Journal of Pure and Applied Analysis     Open Access   (Followers: 4)
Moscow University Mathematics Bulletin     Hybrid Journal  
MSOR Connections     Open Access   (Followers: 1)
Multiscale Modeling and Simulation     Hybrid Journal   (Followers: 4)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Nagoya Mathematical Journal     Hybrid Journal  
Nano Research     Hybrid Journal   (Followers: 4)
Nanotechnologies in Russia     Hybrid Journal   (Followers: 1)
Natural Resource Modeling     Hybrid Journal   (Followers: 1)
New Mathematics and Natural Computation     Hybrid Journal   (Followers: 1)
Nonlinear Analysis : Modelling and Control     Open Access   (Followers: 1)
Nonlinear Analysis : Theory, Methods & Applications     Hybrid Journal   (Followers: 1)
Nonlinear Analysis: Hybrid Systems     Hybrid Journal  
Nonlinear Analysis: Real World Applications     Hybrid Journal   (Followers: 2)
Nonlinear Differential Equations and Applications NoDEA     Hybrid Journal  
Nonlinear Oscillations     Hybrid Journal   (Followers: 1)
North Carolina Journal of Mathematics and Statistics     Open Access  
North-Holland Mathematical Library     Full-text available via subscription   (Followers: 1)
North-Holland Mathematics Studies     Full-text available via subscription  
North-Holland Series in Applied Mathematics and Mechanics     Full-text available via subscription   (Followers: 1)
Note di Matematica     Open Access  
NTM Zeitschrift für Geschichte der Wissenschaften, Technik und Medizin     Hybrid Journal   (Followers: 4)
Numeracy : Advancing Education in Quantitative Literacy     Open Access  
Numerical Analysis and Applications     Hybrid Journal   (Followers: 1)
Numerical Functional Analysis and Optimization     Hybrid Journal   (Followers: 2)
Numerical Linear Algebra with Applications     Hybrid Journal   (Followers: 8)
Numerical Mathematics : Theory, Methods and Applications     Full-text available via subscription  
Numerische Mathematik     Hybrid Journal  
Open Journal of Discrete Mathematics     Open Access   (Followers: 6)
Open Journal of Modelling and Simulation     Open Access   (Followers: 2)
Operations Research Letters     Hybrid Journal   (Followers: 11)
Optimization Letters     Hybrid Journal   (Followers: 2)
Optimization Methods and Software     Hybrid Journal   (Followers: 8)
Opuscula Mathematica     Open Access   (Followers: 109)
Order     Hybrid Journal   (Followers: 1)
ORiON     Open Access  
P-Adic Numbers, Ultrametric Analysis, and Applications     Hybrid Journal  
PAMM : Proceedings in Applied Mathematics and Mechanics     Free   (Followers: 1)
Parallel Processing Letters     Hybrid Journal   (Followers: 3)
Peking Mathematical Journal     Hybrid Journal  
Periodica Mathematica Hungarica     Full-text available via subscription   (Followers: 1)
Perspectivas da Educação Matemática     Open Access  
Petroleum Science     Open Access   (Followers: 1)
Philosophia Mathematica     Hybrid Journal   (Followers: 1)
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences     Full-text available via subscription   (Followers: 10)

  First | 1 2 3 4 5     

Similar Journals
Journal Cover
Journal of Pseudo-Differential Operators and Applications
Journal Prestige (SJR): 0.664
Citation Impact (citeScore): 1
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1662-9981 - ISSN (Online) 1662-999X
Published by Springer-Verlag Homepage  [2658 journals]
  • Nonnegative solutions and multiple solutions for a class of weighted
           Hamiltonian subelliptic systems

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      Abstract: Abstract In this paper, we investigate existence results for the following system $$\begin{aligned} \left\{ \begin{aligned}&-\Delta _X u= v ^{p-1}v{\omega _1(x)}, \\&-\Delta _X v= u ^{q-1}u{\omega _2(x)}, x\in \Omega \subset {\mathbb {R}}^N \end{aligned} \right. \end{aligned}$$ with homogeneous Dirichlet boundary conditions, where \(X=\{X_{1},X_{2},\ldots ,X_{m}\}\) is a system of smooth vector fields defined on a neighborhood of \({\overline{\Omega }}\) that satisfies the Hörmander’s condition, \(\triangle _{X}= -\sum _{i=1}^{m}X_{i}^{*} X_i\) on \(\Omega \) . Furthermore, \(\partial \Omega \) is non-characteristic with respect to X and the weights \(\omega _i(x)\) satisfy certain growth conditions involving negative powers of the C–C metric to isolated singular points. We construct a proper functional setting and use a version of linking theorem to examine the existence of nontrivial solutions where the growth of nonlinearities (p, q) are below certain critical hyperbola related to the generalized Métivier index of X. This work extends the results in Djairo G. de Figueiredo et al. (Annali di Matematica 187:531–545, 2008) to the class of subelliptic finitely degenerate operators and improves the recent multiple solutions in C.T. Anh et al. (Adv Nonlinear Anal 8(1): 661–678, 2017) to the case of superlinear system. Furthermore, the existence of nonnegative solutions and ground-state solutions is proved.
      PubDate: 2021-10-07
       
  • $$L^p$$ L p properties of non-Archimedean fractional differentiation
           operators

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      Abstract: Abstract Let \(D^{\alpha }\) be the Vladimirov–Taibleson fractional differentiation operator acting on complex-valued functions on a non-Archimedean local field. The identity \(D^{\alpha }D^{-\alpha }f=f\) was known only for the case where f has a compact support. Following a result by Samko about the fractional Laplacian of real analysis, we extend the above identity in terms of \(L^p\) -convergence of truncated integrals. Differences between real and non-Archimedean cases are discussed.
      PubDate: 2021-10-05
       
  • Different approach to the decomposition theory of $$HM^p_{q,{\varDelta
           _{\nu }}}$$ H M q , Δ ν p Hardy–Morrey spaces

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      Abstract: Abstract B-maximal functions in \(HM^p_{q,{\varDelta _{\nu }}}\) Hardy–Morrey spaces, related to a Laplace–Bessel differential operator, are studied. We give B-maximal characterization of \(HM^p_{q,{\varDelta _{\nu }}}\) Hardy–Morrey spaces and study the atomic decomposition theory which has the same cancellation properties of the \(H^{p}_{\varDelta _{\nu }}({\mathbb {R}}^{n}_{+})\) Hardy spaces.
      PubDate: 2021-10-04
       
  • Amrein–Berthier and Logvinenko–Sereda uncertainty principles for the
           Hankel–Stockwell transform

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      Abstract: Abstract The aim of this paper is to prove two new uncertainty principles for the Hankel–Stockwell transform namely Amrein–Berthier and Logvinenko–Sereda theorems.
      PubDate: 2021-10-04
       
  • Equivalence of K-functionals and modulus of smoothness for Laguerre type
           operator

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      Abstract: Abstract The aim of this article is to establish the equivalence between a K-functional and a modulus of smoothness generated by \(D{\alpha }\) operator on \({\mathbb {K}}\) in the metrics of \(L^{2}_{\alpha }({\mathbb {K}})\) with a certain weight.
      PubDate: 2021-09-27
       
  • Two classes of bilinear fractional integral operators and their
           commutators on generalized fractional Morrey spaces

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      Abstract: Abstract In this paper, the authors prove that the following form of bilinear fractional integral operator $$\begin{aligned} B_{\alpha }(f,g)(x):=\int _{\mathbb {R}^{n}}\frac{f(x-y)g(x+y)}{ y ^{n-\alpha }}\mathrm {d}y \end{aligned}$$ is bounded from the product of generalized fractional Morrey spaces \({\mathcal {L}}^{p_{1},\eta _{1},\varphi }(\mathbb {R}^{n})\times {\mathcal {L}}^{p_{2},\eta _{2},\varphi }(\mathbb {R}^{n})\) to space \({\mathcal {L}}^{q,\eta -\alpha ,\varphi }(\mathbb {R}^{n})\) , and also bounded from the product space \({\mathcal {L}}^{p_{1},\varphi }\) \((\mathbb {R}^{n})\times {\mathcal {L}}^{p_{2},\varphi }(\mathbb {R}^{n})\) to \({\mathcal {L}}^{q,\varphi ^{\frac{q}{p}}}(\mathbb {R}^{n})\) . Moreover, the boundedness of commutator \([b_{1},b_{2},{\mathcal {I}}_{\alpha }]\) generated by \(b_{1}, b_{2}\in \mathrm {BMO}(\mathbb {R}^{n})\) and bilinear fractional integral operator \({\mathcal {I}}_{\alpha }\) defined as in (1.1) is bounded from the product space \({\mathcal {L}}^{p_{1},\eta _{1},\varphi }(\mathbb {R}^{n})\times {\mathcal {L}}^{p_{2},\eta _{2},\varphi }(\mathbb {R}^{n})\) to space \({\mathcal {L}}^{q,\eta -\alpha ,\varphi }(\mathbb {R}^{n})\) ; as a corollary, the boundedness of the commutator \([b_{1},b_{2},{\mathcal {I}}_{\alpha }]\) on generalized Morrey space is also obtained.
      PubDate: 2021-09-26
       
  • Group classification and constructing conservation laws for
           time-fractional Sawada–Kotera–Parker–Dye equation

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      Abstract: Abstract Finding the symmetries and conservation laws of the nonlinear fractional differential equations are topics, which have many applications in various fields of science and engineering. In this manuscript, firstly, by using the Lie symmetry analysis, we obtain the Lie point symmetries of the time-fractional Sawada–Kotera–Parker–Dye equation. After that, by using the infinitesimal generators, we present the corresponding reduced fractional differential equations and fractional conservation laws.
      PubDate: 2021-09-18
       
  • Elliptic boundary value problems associated with isometric group actions

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      Abstract: Abstract Given a manifold with boundary endowed with an action of a discrete group on it, we consider the algebra of operators generated by elements in the Boutet de Monvel algebra of pseudodifferential boundary value problems and shift operators acting on functions on the manifold and its boundary. Provided that the group is of polynomial growth and its action is isometric, we construct a Chern character for elliptic elements in this algebra with values in a de Rham type cohomology of the fixed point manifolds for the group action and obtain an index formula in terms of this Chern character. Our index formula contains as special cases the index formula by Fedosov for boundary value problems in the Boutet de Monvel algebra and the index formula by Nazaikinskii, Savin and Sternin for operators on a closed manifold associated with an isometric group action.
      PubDate: 2021-09-15
       
  • The convergence constants and non linear approximations of fusion frames

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      Abstract: Abstract In this paper, we study the unconditional constant and nonlinear N-term approximation of fusion frames in Hilbert spaces. We show that the unconditional constant and greedy constant are bounded by a constant which is associated with the fusion frame bounds. We prove that the unconditional constant of cross fusion frame expansions satisfies the similar properties as long as the cross g-frame expansions stay uniformly bounded away from zero. Finally, we show that fusion frames satisfy the quasi greedy and almost greedy conditions. Moreover, we prove that fusion Riesz bases satisfy the greedy condition.
      PubDate: 2021-08-29
       
  • Nonlinear commutators on Morrey–Banach spaces

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      Abstract: Abstract We establish the boundedness of the nonlinear commutator introduced by Rochberg and Weiss (Ann Math 118:315–347, 1983) on Morrey–Banach spaces. In particular, we have the boundedness results on the Morrey–Lorentz spaces and the Morrey spaces with variable exponents.
      PubDate: 2021-08-20
       
  • Uncertainty principles for the offset linear canonical transform

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      Abstract: Abstract In this paper, we extend some different uncertainty principles (UPs), including Miyachi’s UP and Morgan’s UP for the offset linear canonical transform (OLCT) which provides a more general framework for a number of well-known linear integral transforms such as Fourier transform, fractional Fourier transform, linear canonical transform.
      PubDate: 2021-08-16
       
  • An interplay between parameter (p, q)-Boas transform and linear
           canonical transform

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      Abstract: Abstract In this paper, we define and study parameter (p, q)-Boas transform of a signal in linear canonical transform domain. Also, we define the complex signals associated with parameter (p, q)-Boas transform and linear canonical transform and prove the generalized Boas transform product theorem (an analog of Bedrosian’s theorem) in the linear canonical transform domain. Further, using a linear combination of a signal and its parameter (p, q)-Boas transform, we define a \(\eta \) -linear canonical Boas transform and study some of its properties. Finally, we propose some \(\eta \) -linear canonical complex signals and give analysis of their linear canonical transform spectrum and eigenfunction property.
      PubDate: 2021-08-10
       
  • Gabor multipliers associated with the Bessel–Kingman hypergroup

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      Abstract: Abstract We consider the Bessel–Kingman hypergroup \(\big ([0,+\infty [,*\big )\) and we denote by \(d\mu _\alpha ,\ \alpha \geqslant -\frac{1}{2},\ \) the measure defined on \([0,+\infty [\) by \(d\mu _\alpha (x)=\frac{x^{2+1}}{2^\alpha \ \Gamma (\alpha +1)}\ dx.\ \) We define the Gabor multiplier \(\mathscr {G}_{u,v}(\sigma )\) associated with two square integrable functions u, v on \([0,+\infty [\) with respect to the measure \(d\mu _\alpha \) called window functions and \(\sigma \) is a measurable function on \([0,+\infty [\) called a signal. We prove that \(\mathscr {G}_{u,v}(\sigma )\) is a bounded linear operator on \(L^2(d\mu _\alpha )\) and it is compact. Next, we define the Schatten von-Neumann class \(S^p,\ p\in \ [1,+\infty ],\ \) and we show that the Gabor multiplier \(\mathscr {G}_{u,v}(\sigma )\) belongs to the class \(S^p.\ \) We give also a formula of trace when \(\sigma \in \ L^1(d\mu _\alpha )\) . Also, we define the Landau–Pollak–Slebian operator and we give its connection with the Gabor multiplier. Last, we study the boundedness and compactness of the Gabor multipliers for more window functions \(u,v\in \ L^p(d\mu _\alpha ),\ p\in \ [1,+\infty ]\) .
      PubDate: 2021-07-27
       
  • Pseudo-fractional differential equations and generalized g-Laplace
           transform

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      Abstract: Abstract In this article, we introduce a generalized g-Laplace transform and discuss some essential results of integral transform theory, in particular, involving a \(\psi \) -Hilfer pseudo-fractional derivative and function convolution. In this sense, we investigated the existence and uniqueness of known solutions for a pseudo-fractional differential equation.
      PubDate: 2021-07-24
       
  • Semilinear wave equation on compact Lie groups

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      Abstract: Abstract In this note, we study the semilinear wave equation with power nonlinearity \( u ^p\) on compact Lie groups. First, we prove a local in time existence result in the energy space via Fourier analysis on compact Lie groups. Then, we prove a blow-up result for the semilinear Cauchy problem for any \(p>1\) , under suitable sign assumptions for the initial data. Furthermore, sharp lifespan estimates for local (in time) solutions are derived.
      PubDate: 2021-07-14
       
  • Fundamental solutions and decay rates for evolution problems on the torus
           $$\mathbb {T}^n$$ T n

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      Abstract: Abstract In this paper we study large-time behavior evolution problems on the n-dimensional torus \(\mathbb {T}^n\) , \(n \ge 1\) . Here we analyze the solutions to these problems, studying their regularity and obtaining estimates of them. The main tools we use is the toroidal Fourier transform, together with Fourier series and a version of the Hardy-Littlewood inequality, applied to our case of the n-dimensional torus \(\mathbb {T}^n\) . We use this inequality to find an estimate of solutions to evolution problems.
      PubDate: 2021-07-14
       
  • Time–frequency analysis associated with the k-Hankel Gabor transform on
           $${\mathbb {R}}^{d}$$ R d

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      Abstract: Abstract In this paper, we investigate the k-Hankel Gabor transform on \({\mathbb {R}}^{d}\) in some problems of time–frequency analysis. Firstly, we present the main theorems of Harmonic analysis as Plancherel’s, Lieb’s and inversion formulas for this transform. Next, we formulate some novel uncertainty principles including the Heisenberg and logarithmic uncertainty principles, Benedick–Amrein–Berthier’s uncertainty principle, local uncertainty principles and Shapiro’s uncertainty principle. In sequel, we introduce the localization operators associated with the k-Hankel Gabor transform on \({\mathbb {R}}^{d}\) and we develop corresponding theory. In particular we study their trace class properties and we prove that they are in the Schatten–von Neumann.
      PubDate: 2021-07-01
       
  • $$\psi $$ ψ -Mittag–Leffler pseudo-fractional operators

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      Abstract: Abstract In this paper we present new types of pseudo-fractional integral and derivatives on a semiring \(([a,b],\oplus ,\odot )\) . These operators are called the \(\psi \) -Riemann–Liouville–Mittag–Leffler pseudo-fractional integrals and derivatives and \(\psi \) -Caputo–Mittag–Leffler pseudo-fractional derivatives. Some properties, like the semigroup law, composition relations between pseudo-fractional differentiation and pseudo-fractional integration operators, composition relations between pseudo-fractional derivatives, among others, are discussed. Finally, as an application, we proved two versions of the fundamental theorem of fractional calculus.
      PubDate: 2021-06-29
       
  • Mixed radial-angular integrability for rough maximal operators

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      Abstract: Abstract In this paper, we study the mixed radial-angular integrability for maximal operators related to a class of rough singular integrals along “polynomial curves". Under assuming that the kernel satisfies certain rather weak size condition on sphere, we obtain the boundedness of such maximal operators on the mixed radial-angular Lebesgue spaces. Meanwhile, on the corresponding vector-valued versions are also established.
      PubDate: 2021-06-16
       
  • FIOs with cusp singularities and open umbrellas

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      Abstract: Abstract We study the composition calculus of Fourier integral operators F, with Morin singularities. This composition calculus falls outside of the classical transverse or clean intersection calculus of FIOs and it is motivated by the inverse problems studied in Felea and Greenleaf (Math Res Lett 17(5):867–886, 2010) and Felea and Nolan (J Fourier Anal Appl 21(4):799–821, 2015). In this case, the normal operator \(F^*F\) is an operator with the wave front set in \(\Delta \cup \Lambda \) where \(\Lambda \) is a singular canonical relation called an open umbrella. We show that the operator \(F^*F\) has the same order on \(\Delta \setminus \Lambda \) and on \( \Lambda \setminus \Delta \) . This result is a generalization of the results obtained in Felea and Greenleaf (2010) and Felea and Nolan (2015) where the canonical relations have the fold/cusp and cusp/cusp singularities.
      PubDate: 2021-06-15
       
 
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