Subjects -> MATHEMATICS (Total: 1013 journals)
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MATHEMATICS (714 journals)            First | 1 2 3 4     

Showing 601 - 538 of 538 Journals sorted alphabetically
Results in Mathematics     Hybrid Journal  
Results in Nonlinear Analysis     Open Access  
Review of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Reviews in Mathematical Physics     Hybrid Journal   (Followers: 1)
Revista Baiana de Educação Matemática     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista BoEM - Boletim online de Educação Matemática     Open Access  
Revista Colombiana de Matemáticas     Open Access   (Followers: 1)
Revista de Ciencias     Open Access  
Revista de Educación Matemática     Open Access  
Revista de la Escuela de Perfeccionamiento en Investigación Operativa     Open Access  
Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas     Partially Free  
Revista de Matemática : Teoría y Aplicaciones     Open Access   (Followers: 1)
Revista Digital: Matemática, Educación e Internet     Open Access  
Revista Electrónica de Conocimientos, Saberes y Prácticas     Open Access  
Revista Integración : Temas de Matemáticas     Open Access  
Revista Internacional de Sistemas     Open Access  
Revista Latinoamericana de Etnomatemática     Open Access  
Revista Latinoamericana de Investigación en Matemática Educativa     Open Access  
Revista Matemática Complutense     Hybrid Journal  
Revista REAMEC : Rede Amazônica de Educação em Ciências e Matemática     Open Access  
Revista SIGMA     Open Access  
Ricerche di Matematica     Hybrid Journal  
RMS : Research in Mathematics & Statistics     Open Access  
Royal Society Open Science     Open Access   (Followers: 7)
Russian Journal of Mathematical Physics     Full-text available via subscription  
Russian Mathematics     Hybrid Journal  
Sahand Communications in Mathematical Analysis     Open Access  
Sampling Theory, Signal Processing, and Data Analysis     Hybrid Journal  
São Paulo Journal of Mathematical Sciences     Hybrid Journal  
Science China Mathematics     Hybrid Journal   (Followers: 1)
Science Progress     Full-text available via subscription   (Followers: 1)
Sciences & Technologie A : sciences exactes     Open Access  
Selecta Mathematica     Hybrid Journal   (Followers: 1)
SeMA Journal     Hybrid Journal  
Semigroup Forum     Hybrid Journal   (Followers: 1)
Set-Valued and Variational Analysis     Hybrid Journal  
SIAM Journal on Applied Mathematics     Hybrid Journal   (Followers: 11)
SIAM Journal on Computing     Hybrid Journal   (Followers: 11)
SIAM Journal on Control and Optimization     Hybrid Journal   (Followers: 18)
SIAM Journal on Discrete Mathematics     Hybrid Journal   (Followers: 8)
SIAM Journal on Financial Mathematics     Hybrid Journal   (Followers: 3)
SIAM Journal on Mathematics of Data Science     Hybrid Journal   (Followers: 1)
SIAM Journal on Matrix Analysis and Applications     Hybrid Journal   (Followers: 3)
SIAM Journal on Optimization     Hybrid Journal   (Followers: 12)
Siberian Advances in Mathematics     Hybrid Journal  
Siberian Mathematical Journal     Hybrid Journal  
Sigmae     Open Access  
SILICON     Hybrid Journal  
SN Partial Differential Equations and Applications     Hybrid Journal  
Soft Computing     Hybrid Journal   (Followers: 7)
Statistics and Computing     Hybrid Journal   (Followers: 13)
Stochastic Analysis and Applications     Hybrid Journal   (Followers: 2)
Stochastic Partial Differential Equations : Analysis and Computations     Hybrid Journal   (Followers: 1)
Stochastic Processes and their Applications     Hybrid Journal   (Followers: 5)
Stochastics and Dynamics     Hybrid Journal  
Studia Scientiarum Mathematicarum Hungarica     Full-text available via subscription   (Followers: 1)
Studia Universitatis Babeș-Bolyai Informatica     Open Access  
Studies In Applied Mathematics     Hybrid Journal   (Followers: 1)
Studies in Mathematical Sciences     Open Access   (Followers: 1)
Superficies y vacio     Open Access  
Suska Journal of Mathematics Education     Open Access   (Followers: 1)
Swiss Journal of Geosciences     Hybrid Journal   (Followers: 1)
Synthesis Lectures on Algorithms and Software in Engineering     Full-text available via subscription   (Followers: 2)
Synthesis Lectures on Mathematics and Statistics     Full-text available via subscription   (Followers: 1)
Tamkang Journal of Mathematics     Open Access  
Tatra Mountains Mathematical Publications     Open Access  
Teaching Mathematics     Full-text available via subscription   (Followers: 10)
Teaching Mathematics and its Applications: An International Journal of the IMA     Hybrid Journal   (Followers: 4)
Teaching Statistics     Hybrid Journal   (Followers: 8)
Technometrics     Full-text available via subscription   (Followers: 8)
The Journal of Supercomputing     Hybrid Journal   (Followers: 1)
The Mathematica journal     Open Access  
The Mathematical Gazette     Full-text available via subscription   (Followers: 1)
The Mathematical Intelligencer     Hybrid Journal  
The Ramanujan Journal     Hybrid Journal  
The VLDB Journal     Hybrid Journal   (Followers: 2)
Theoretical and Mathematical Physics     Hybrid Journal   (Followers: 7)
Theory and Applications of Graphs     Open Access  
Topological Methods in Nonlinear Analysis     Full-text available via subscription  
Transactions of the London Mathematical Society     Open Access   (Followers: 1)
Transformation Groups     Hybrid Journal  
Turkish Journal of Mathematics     Open Access  
Ukrainian Mathematical Journal     Hybrid Journal  
Uniciencia     Open Access  
Uniform Distribution Theory     Open Access  
Unisda Journal of Mathematics and Computer Science     Open Access  
Unnes Journal of Mathematics     Open Access   (Followers: 2)
Unnes Journal of Mathematics Education     Open Access   (Followers: 2)
Unnes Journal of Mathematics Education Research     Open Access   (Followers: 1)
Ural Mathematical Journal     Open Access  
Vestnik Samarskogo Gosudarstvennogo Tekhnicheskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki     Open Access  
Vestnik St. Petersburg University: Mathematics     Hybrid Journal  
VFAST Transactions on Mathematics     Open Access   (Followers: 1)
Vietnam Journal of Mathematics     Hybrid Journal  
Vinculum     Full-text available via subscription  
Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics     Open Access   (Followers: 1)
Water SA     Open Access   (Followers: 2)
Water Waves     Hybrid Journal  
Zamm-Zeitschrift Fuer Angewandte Mathematik Und Mechanik     Hybrid Journal   (Followers: 1)
ZDM     Hybrid Journal   (Followers: 2)
Zeitschrift für angewandte Mathematik und Physik     Hybrid Journal   (Followers: 2)
Zeitschrift fur Energiewirtschaft     Hybrid Journal  
Zetetike     Open Access  

  First | 1 2 3 4     

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Rendiconti del Circolo Matematico di Palermo
Journal Prestige (SJR): 0.285
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1973-4409 - ISSN (Online) 0009-725X
Published by Springer-Verlag Homepage  [2469 journals]
  • Strong convergence of an inertial Halpern type algorithm in Banach spaces

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      Abstract: Abstract In this article, we obtain the strong convergence of the new modified Halpern iteration process $$\begin{aligned} x_{n+1} = \alpha _{n}u + (1-\alpha _{n})T_{n}P(x_{n} + \theta _{n}(x_{n} - x_{n-1})), \ \ \ \ \ \ n=1,2,3,\ldots , \end{aligned}$$ to a common fixed point of \(\{ T_{n}\}\) , where \(\{ T_{n}\}_{n=1}^{\infty }\) is a family of nonexpansive mappings on the closed and convex subset C of a Banach space X, \(P: X \longrightarrow C\) is a nonexpansive retraction, \(\{\alpha _n\} \subset [0, 1]\) and \(\{\theta _n\}\subset R^+\) . Some applications of this result are also presented.
      PubDate: 2022-05-12
       
  • Sequential subdifferential for multi-composed functions via perturbation
           approach

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      Abstract: Abstract In this paper, we establish a sequential formula for the subdifferential of multi-composed convex functions via an interesting result due to (Bot et al. in J Math Anal Appl 342(2):1015–1025, 2008), based on perturbation theory. As an application, we derive sequential optimality conditions for a convex fractional programming problem with geometric and cone constraints, without considering any qualification condition. We give an example illustrates the general result where no exact subdifferential optimality conditions are possible without a regularity condition such that sequential subdifferential conditions are more meaningful.
      PubDate: 2022-05-05
       
  • Some identities related to multiplicative (generalized)-derivations in
           prime and semiprime rings

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      Abstract: Abstract Let R be a semiprime ring with center Z(R) and \(\lambda \) a nonzero left ideal of R. A mapping \(F: R\rightarrow R\) (not necessarily additive) is said to be a multiplicative (generalized)-derivation on R, if there exists a map d (not necessarily an additive map or derivation) on R such that \(F(xy)=F(x)y+xd(y)\) holds for all \(x,y\in R\) . Suppose that F and G are two multiplicative (generalized)-derivations of R associated with the maps d and g respectively on R. Throughout this paper we study the following situations: \(F([x,y])+G(yx)+d(x)F(y)+xy \in Z(R)\) , \(F(x\circ y)+G(yx)+d(x)F(y)+xy \in Z(R)\) , \(F(xy)+G(yx)+d(x)F(y)\pm [x, y] \in Z(R)\) , \(F([x,y])+G(xy)+d(x)F(y)+yx \in Z(R)\) , \(F(x\circ y)+G(xy)+d(x)F(y)+yx \in Z(R)\) , \(F([x,y])+G(yx)+d(y)F(x)-xy \in Z(R)\) , \(F(x)F(y)-G(yx)-xy+yx \in Z(R)\) ; for all \(x,y\in \lambda \) .
      PubDate: 2022-05-03
       
  • Strong convergence of an inertial Halpern type algorithm in Banach spaces

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      Abstract: Abstract In this article, we obtain the strong convergence of the new modified Halpern iteration process $$\begin{aligned} x_{n+1} = \alpha _{n}u + (1-\alpha _{n})T_{n}P(x_{n} + \theta _{n}(x_{n} - x_{n-1})), \ \ \ \ \ \ n=1,2,3,\ldots , \end{aligned}$$ to a common fixed point of \( \{ T_{n} \}\) , where \(\{ T_{n}\}_{n=1}^{\infty }\) is a family of nonexpansive mappings on the closed and convex subset C of a Banach space X, \(P: X \longrightarrow C\) is a nonexpansive retraction, \(\{\alpha _n\} \subset [0, 1]\) and \(\{\theta _n\}\subset R^+\) . Some applications of this result are also presented.
      PubDate: 2022-05-03
       
  • A note on composition operators on certain weighted Hardy spaces

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      Abstract: Abstract We study the composition operators on certain weighted Hilbert spaces \({\mathcal {H}} _\omega\) , consisting of analytic functions defined on \({\mathbb {D}}\) , that can be described as a weighted Dirichlet space with weight \(\omega\) having certain properties. We will use the notion of vanishing \(\omega\) -Carleson measure to characterize the compact composition operators on \({\mathcal {H}} _\omega\) . Also, we give some upper and lower estimates for the essential norm of these operators and investigate the Hilbert-Schmidt composition operators.
      PubDate: 2022-04-30
       
  • Critical equations with Hardy terms in the Heisenberg group

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      Abstract: Abstract In this paper, we are concerned with the study of a critical (p, q) equation with Hardy terms on the Heisenberg group. Existence of entire solutions is obtained via an application of some concentration–compactness type results and the mountain pass theorem. Our results are presented in the model case of the (p, q) horizontal Laplacian equations, but the method can be extended to deal with a more general class of problems with operators of (p, q) growth.
      PubDate: 2022-04-28
       
  • Single-step algorithm for variational inequality problems in 2-uniformly
           convex banach spaces

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      Abstract: Abstract In this work, we prove weak convergence of a single-step iterative algorithm to a solution of variational inequality problems in 2-uniformly convex and uniformly smooth real Banach spaces. We apply our main result to the Nash-Cournot equilibrium oligopoly electricity market. We also give some numerical examples in infinite dimensional setting to illustrate how our algorithm works. Finally, our results generalize and complement several existing results in the literature.
      PubDate: 2022-04-28
       
  • Approximation of Lebesgue integrable functions by
           Bernstein-Lototsky-Kantorovich operators

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      Abstract: Abstract In this paper generalized Kantorovich operators are constructed using Lototsky-Bernstein basis functions on unit interval. An approximation of continuous functions by these sequence of operators has been established based on Korovkin’s theorem. Finally, we prove that this sequence of operators \(D_{\mu }(f;x)\) converges to \(f\in L^{p}[0,1]\) in \(\Vert .\Vert _{p}\) .
      PubDate: 2022-04-26
       
  • Instability of solitary waves of two-dimensional Benjamin equation

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      Abstract: Abstract In this paper, we study instability of solitary wave solutions of the generalized two space-dimensional Benjamin equation \((u_t+u_{xxx}-\beta {\mathscr {H}}u_{xx}+(u^p)_x)_x=u_{yy}\) . This equation governs the evolution of waves at the interface of a two-fluid system in which surface-tension effects cannot be ignored. We improve the previous work by Chen et al. (Proc R Soc A 464:49–64, 2008, https://doi.org/10.1098/rspa.2007.0013) to the case \(\beta <0\) and \(p>7/3\) , and show that solitary waves of this equation are unstable by the mechanism of blow-up.
      PubDate: 2022-04-22
       
  • Ishikawa type mean convergence theorems for finding common fixed points of
           nonlinear mappings in Hilbert spaces

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      Abstract: Abstract Combining the ideas of Ishikawa iteration and mean iteration, we establish weak convergence theorems for finding common fixed points of nonlinear mappings. The mappings are not necessarily continuous or commutative. We consider a class of mappings which includes nonexpansive mappings, generalized hybrid mappings and normally 2-generalized hybrid mappings as special cases. Our result generates many alternative iteration schemes to approximate common fixed points of nonlinear mappings and improves many existing theorems in the literature.
      PubDate: 2022-04-19
       
  • Higher moments of the Fourier coefficients of symmetric square L-functions
           on certain sequence

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      Abstract: Abstract Let \(\lambda _{sym^{2}f}(n)\) be the \(n^{th}\) normalized Fourier coefficient of symmetric square L-function. In this paper, we will establish an asymptotic formula for $$\begin{aligned} \sum _{{\mathop {(a,b,c,d)\in \mathbb {Z}^{4}}\limits ^{a^{2}+b^{2}+c^{2}+d^{2}\le {x}}}}\lambda ^{\theta }_{sym^{2}f}(a^{2}+b^{2}+c^{2}+d^{2}) \end{aligned}$$ where \(\theta =3,4\) and \(x\ge {x_{0}}\) (sufficiently large).
      PubDate: 2022-04-12
       
  • Product and commuting generalized derivations in prime rings

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      Abstract: Abstract The aim of the paper is to study the commuting generalized derivations. Suppose that R is a prime ring of char \((R)\ne 2\) , \(\pi (\xi _1,\ldots ,\xi _n)\) is a noncentral multilinear polynomial over C and \(T_1\) , \(T_2\) and \(T_3\) are generalized derivations on R. If \(T_2(\xi )T_1(\xi )=T_1(\xi )\xi -\xi T_3(\xi )\) for all \(\xi =\pi (\xi _1,\ldots ,\xi _n)\in f(R)\) , then we describe all possible forms of \(T_1\) , \(T_2\) and \(T_3\) .
      PubDate: 2022-04-07
       
  • On the class of $$(W_{e})$$ ( W e ) -operators

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      Abstract: Abstract It is well known that an hyponormal operator satisfies Weyl’s theorem. A result due to Conway shows that the essential spectrum of a normal operator N consists precisely of all points in its spectrum except the isolated eigenvalues of finite multiplicity, that’s \(\sigma _{e}(N)=\sigma (N)\setminus E^0(N).\) In this paper, we define and study a new class named \((W_{e})\) of operators satisfying \(\sigma _{e}(T)=\sigma (T)\setminus E^0(T),\) as a subclass of (W). A counterexample shows generally that an hyponormal does not belong to the class \((W_{e}),\) and we give an additional hypothesis under which an hyponormal belongs to the class \((W_{e}).\) We also give the generalization class \((gW_{e})\) in the context of B-Fredholm theory, and we characterize \((B_{e}),\) as a subclass of (B),  in terms of localized SVEP.
      PubDate: 2022-04-04
       
  • Abel ergodic theorems for strongly continuous cosine operators

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      Abstract: Abstract Let \((C(t))_{t\in \mathbb {R}}\) be a strongly continuous cosine operators on a Banach space X into itself and let A be their infinitesimal generator. In this work, we study the uniform convergence of the Abel averages \(\lambda \int _{0}^{\infty }e^{-\lambda t}C(t)dt\) of C(t) when \(\lambda \) tends to \(0^+\) . More precisely, we show that C(t) is uniformly Abel ergodic if and only if \( {X}= {\mathcal {R}}(A)\oplus {\mathcal {N}}(A)\) , with \( {\mathcal {R}}(A)\) and \( {\mathcal {N}}(A)\) the range and the kernel of A, respectively. Next, we examine this theory with the uniform power convergence of the Abel average \(\lambda ^2 R(\lambda ^2, A)\) , for some \(\lambda >0\) , where \(R(\lambda ^2,A)\) be the resolvent function of A.
      PubDate: 2022-04-01
       
  • An Iterative method for split equality variational inequality problems for
           non-Lipschitz pseudomonotone mappings

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      Abstract: Abstract The purpose of this paper is to introduce an algorithm for approximating solutions of split equality variational inequality problems. A convergence theorem of the proposed algorithm is established in Hilbert spaces under the assumption that the associated mapping is uniformly continuous, pseudomonotone and sequentially weakly continuous. Finally, we provide several applications of our method and provide a numerical result to demonstrate the behavior of the convergence of the algorithm. Our results extend and generalize some related results in the literature.
      PubDate: 2022-04-01
       
  • Identities with generalized derivations in prime rings

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      Abstract: Abstract Let U be the Utumi quotient ring of a prime ring R, char \((R)\ne 2\) and \(f(x_1,\ldots ,x_n)\) be a noncentral multilinear polynomial over the extended centroid C. Suppose that G, F and H are three generalized derivations on R such that \(F(G(f(r))f(r))-H(f(r)^2)=0\) for all \(r=(r_1,\ldots ,r_n)\in R^{n}\) . In this paper, we give the complete characterization of the mappings G, F and H.
      PubDate: 2022-04-01
       
  • Multiple solutions to boundary value problems for semilinear strongly
           degenerate elliptic differential equations

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      Abstract: Abstract In this paper, we study the existence of multiple solutions for the boundary value problem $$\begin{aligned} \begin{array}{llll} -\Delta _{\gamma } u&{}= f(x,u) + g(x,u) &{} \text{ in } &{} \Omega , \\ u&{}= 0 &{} \text{ on } &{} \partial \Omega , \end{array} \end{aligned}$$ where \(\Omega\) is a bounded domain with smooth boundary in \(\mathbb {R}^N \ (N \ge 2),\) \(f(x,\xi ), g(x,\xi )\) are Carathéodory functions, \(f(x,\xi )\) is odd in \(\xi\) , \(g(x,\xi )\) is perturbation term and \(\Delta _{\gamma }\) is the strongly degenerate elliptic operator of the type $$\begin{aligned} \Delta _\gamma : =\sum \limits _{j=1}^{N}\partial _{x_j} \left( \gamma _j^2 \partial _{x_j} \right) , \quad \partial _{x_j}: =\frac{\partial }{\partial x_{j}},\quad \gamma : = (\gamma _1, \gamma _2,\ldots , \gamma _N). \end{aligned}$$ We use the minimax method and Rabinowitz’s perturbation method. This result is a generalization of that of Luyen and Tri (Complex Var Elliptic Equ 64(6):1050–1066, 2019).
      PubDate: 2022-04-01
       
  • A note on the p-operator space structure of the p-analog of the
           Fourier-Stieltjes algebra

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      Abstract: Abstract In this paper one of the possible p-operator space structures of the p-analog of the Fourier-Stieltjes algebra will be introduced, and to some extend will be studied. This special sort of p-operator structure will be given from the predual of this Fourier type algebra, that is the algebra of universal p-pseudofunctions. Furthermore, some applicable and expected results will be proven. Current paper can be considered as a new gate into the collection of problems around the p-analog of the Fourier-Stieltjes algebra, in the p-operator space structure point of view.
      PubDate: 2022-04-01
       
  • Caputo–Fabrizio fractional differential equations with non
           instantaneous impulses

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      Abstract: Abstract This paper deals with some existence results based on Schauder’s and Monch’s fixed point theorems and the technique of the measure of noncompactness for Cauchy problem of Caputo–Fabrizio fractional differential equations with not instantaneous impulses. Some illustrative examples are presented in the last section.
      PubDate: 2022-04-01
       
  • Equivalence of K-functionals and moduli of smoothness generated by the
           Beltrami-Laplace operator on the spaces $$S^{(p,q)}(\sigma ^{m-1})$$ S ( p
           , q ) ( σ m - 1 )

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      Abstract: Abstract Some problems in the theory of approximation of functions on the sphere \(\sigma ^{m-1}\) in the metric of \(S^{(p,q)}\) by functions with bounded spectrum, are investigated. We prove analogues of Jackson’s direct theorem for the moduli of smoothness of all orders constructed on the basis of spherical shift. The equivalence between moduli of smoothness and K-functional for the couple \(\left( S^{(p,q)}(\sigma ^{m-1}), W^{r}_{p,q}(\sigma ^{m-1})\right) \) is also shown on the sphere \(\sigma ^{m-1}\) .
      PubDate: 2022-04-01
       
 
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