Subjects -> MATHEMATICS (Total: 1013 journals)
    - APPLIED MATHEMATICS (92 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (714 journals)
    - MATHEMATICS (GENERAL) (45 journals)
    - NUMERICAL ANALYSIS (26 journals)
    - PROBABILITIES AND MATH STATISTICS (113 journals)

MATHEMATICS (714 journals)            First | 1 2 3 4     

Showing 401 - 538 of 538 Journals sorted alphabetically
Journal of mathematical and computational science     Open Access   (Followers: 2)
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Mathematical Behavior     Hybrid Journal   (Followers: 6)
Journal of Mathematical Chemistry     Hybrid Journal   (Followers: 5)
Journal of Mathematical Finance     Open Access   (Followers: 6)
Journal of Mathematical Imaging and Vision     Hybrid Journal   (Followers: 6)
Journal of Mathematical Logic     Hybrid Journal   (Followers: 2)
Journal of Mathematical Sciences     Hybrid Journal  
Journal of Mathematical Sciences and Applications     Open Access   (Followers: 2)
Journal of Mathematical Sociology     Hybrid Journal   (Followers: 3)
Journal of Mathematics     Open Access  
Journal of Mathematics and Statistics     Open Access   (Followers: 6)
Journal of Mathematics and Statistics Studies     Open Access  
Journal of Mathematics and the Arts     Hybrid Journal   (Followers: 1)
Journal of Mathematics Education at Teachers College     Open Access   (Followers: 5)
Journal of Mathematics in Industry     Open Access  
Journal of Mathematics Research     Open Access  
Journal of Metallurgy     Open Access   (Followers: 9)
Journal of Modern Mathematics Frontier     Open Access  
Journal of Multidisciplinary Modeling and Optimization     Open Access   (Followers: 1)
Journal of Multivariate Analysis     Hybrid Journal   (Followers: 15)
Journal of Nonlinear Analysis and Optimization : Theory & Applications     Open Access   (Followers: 4)
Journal of Nonlinear Mathematical Physics     Hybrid Journal   (Followers: 2)
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 Progressive Research in Mathematics     Open Access   (Followers: 1)
Journal of Pseudo-Differential Operators and Applications     Hybrid Journal  
Journal of Pure and Applied Algebra     Full-text available via subscription   (Followers: 3)
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 Indian Mathematical Society     Hybrid Journal  
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  
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: 10)
Journal of Turbulence     Hybrid Journal   (Followers: 7)
Journal of Universal Mathematics     Open Access  
Journal of Urban Regeneration & Renewal     Full-text available via subscription   (Followers: 8)
JRAMathEdu : Journal of Research and Advances in Mathematics Education     Open Access   (Followers: 5)
JUMLAHKU : Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan     Open Access  
JURING (Journal for Research in Mathematics Learning)     Open Access  
Jurnal Didactical Mathematics     Open Access   (Followers: 5)
Jurnal Matematika     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  
Kreano, Jurnal Matematika Kreatif-Inovatif     Open Access  
Le Matematiche     Open Access  
Lettera Matematica     Hybrid Journal  
Lietuvos Matematikos Rinkinys     Open Access  
Limits : Journal of Mathematics and Its Applications     Open Access  
Linear Algebra and its Applications     Full-text available via subscription   (Followers: 22)
Linear and Multilinear Algebra     Hybrid Journal   (Followers: 7)
Lithuanian Mathematical Journal     Hybrid Journal  
Lobachevskii Journal of Mathematics     Open Access  
Logic Journal of the IGPL     Hybrid Journal   (Followers: 1)
Logica Universalis     Hybrid Journal  
manuscripta mathematica     Hybrid Journal   (Followers: 1)
MaPan : Jurnal Matematika dan Pembelajaran     Open Access  
Marine Genomics     Hybrid Journal   (Followers: 1)
Matemáticas, Educación y Sociedad     Open Access  
Matematicheskie Zametki     Full-text available via subscription  
Mathematica Scandinavica     Full-text available via subscription   (Followers: 1)
Mathematical Analysis and its Contemporary Applications     Open Access   (Followers: 1)
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: 1)
Mathematical Methods in the Applied Sciences     Hybrid Journal   (Followers: 3)
Mathematical Methods of Statistics     Hybrid Journal   (Followers: 4)
Mathematical Modelling and Analysis     Open Access   (Followers: 1)
Mathematical Modelling of Natural Phenomena     Open Access   (Followers: 1)
Mathematical Models and Methods in Applied Sciences     Hybrid Journal   (Followers: 1)
Mathematical Notes     Hybrid Journal  
Mathematical Proceedings of the Cambridge Philosophical Society     Full-text available via subscription   (Followers: 2)
Mathematical Programming Computation     Hybrid Journal   (Followers: 2)
Mathematical Sciences     Open Access  
Mathematical Social Sciences     Hybrid Journal   (Followers: 1)
Mathematical Theory and Modeling     Open Access   (Followers: 6)
Mathematical Thinking and Learning     Hybrid Journal   (Followers: 4)
Mathematics and Statistics     Open Access   (Followers: 2)
Mathematics Education Forum Chitwan     Open Access   (Followers: 2)
Mathematics Education Journal     Open Access   (Followers: 4)
Mathematics Education Research Journal     Partially Free   (Followers: 16)
Mathematics of Control, Signals, and Systems (MCSS)     Hybrid Journal   (Followers: 5)
Mathematics Teacher: Learning and Teaching PK-12     Full-text available via subscription   (Followers: 9)
Mathematics Teaching in the Middle School     Full-text available via subscription   (Followers: 8)
Mathematische Annalen     Hybrid Journal   (Followers: 2)
Mathematische Nachrichten     Hybrid Journal   (Followers: 1)
Mathematische Semesterberichte     Hybrid Journal  
Mathematische Zeitschrift     Hybrid Journal   (Followers: 2)
MATICS     Open Access  
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   (Followers: 1)
Metascience     Hybrid Journal   (Followers: 1)
Metrology and Instruments / Метрологія та прилади     Open Access  
Milan Journal of Mathematics     Hybrid Journal  
MLQ- Mathematical Logic Quarterly     Hybrid Journal   (Followers: 1)
Modelling in Civil and Environmental Engineering     Open Access   (Followers: 4)
MONA : Matematik- og Naturfagsdidaktik     Hybrid Journal  
Monatshefte fur Mathematik     Hybrid Journal  
Moroccan Journal of Pure and Applied Analysis     Open Access  
Moscow University Mathematics Bulletin     Hybrid Journal  
MSOR Connections     Open Access   (Followers: 1)
Multiscale Modeling and Simulation     Hybrid Journal   (Followers: 2)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Nagoya Mathematical Journal     Hybrid Journal   (Followers: 1)
Nano Research     Hybrid Journal   (Followers: 4)
Nanotechnologies in Russia     Hybrid Journal  
Natural Resource Modeling     Hybrid Journal  
New Mathematics and Natural Computation     Hybrid Journal   (Followers: 1)
Nonlinear Analysis     Hybrid Journal   (Followers: 1)
Nonlinear Analysis : Modelling and Control     Open Access   (Followers: 1)
Nonlinear Analysis: Hybrid Systems     Hybrid Journal  
Nonlinear Analysis: Real World Applications     Hybrid Journal   (Followers: 1)
Nonlinear Differential Equations and Applications NoDEA     Hybrid Journal  
North Carolina Journal of Mathematics and Statistics     Open Access  
Note di Matematica     Open Access  
NTM Zeitschrift für Geschichte der Wissenschaften, Technik und Medizin     Hybrid Journal   (Followers: 3)
Numeracy : Advancing Education in Quantitative Literacy     Open Access   (Followers: 1)
Numerical Analysis and Applications     Hybrid Journal   (Followers: 1)
Numerical Functional Analysis and Optimization     Hybrid Journal   (Followers: 3)
Numerical Linear Algebra with Applications     Hybrid Journal   (Followers: 7)
Numerische Mathematik     Hybrid Journal  
Open Journal of Discrete Mathematics     Open Access   (Followers: 3)
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: 6)
Opuscula Mathematica     Open Access  
Order     Hybrid Journal  
ORiON     Open Access  
P-Adic Numbers, Ultrametric Analysis, and Applications     Hybrid Journal  
PAMM : Proceedings in Applied Mathematics and Mechanics     Free  
Parallel Processing Letters     Hybrid Journal   (Followers: 3)
Peking Mathematical Journal     Hybrid Journal  
Periodica Mathematica Hungarica     Full-text available via subscription   (Followers: 1)
Petroleum Science     Open Access  
Philosophia Mathematica     Hybrid Journal   (Followers: 1)
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences     Full-text available via subscription   (Followers: 9)
PNA. Revista de Investigación en Didáctica de la Matemática     Open Access  
Polar Science     Hybrid Journal   (Followers: 3)
Positivity     Hybrid Journal  
Press Start     Open Access   (Followers: 1)
Prime Number     Full-text available via subscription  
Probability in the Engineering and Informational Sciences     Hybrid Journal   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Proceedings - Mathematical Sciences     Open Access   (Followers: 5)
Proceedings of the American Mathematical Society, Series B     Open Access   (Followers: 4)
Proceedings of the Edinburgh Mathematical Society     Hybrid Journal  
Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics     Hybrid Journal   (Followers: 2)
Proceedings of the Latvian Academy of Sciences. Section B: Natural, Exact and Applied Sciences     Open Access   (Followers: 1)
Proceedings of the London Mathematical Society     Hybrid Journal   (Followers: 5)
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences     Full-text available via subscription   (Followers: 6)
Proceedings of the Royal Society of Edinburgh Section A Mathematics     Full-text available via subscription  
Proceedings of the Steklov Institute of Mathematics     Hybrid Journal  
Progress in Photovoltaics: Research & Applications     Hybrid Journal   (Followers: 6)
Proyecciones : Revista de Matematica     Open Access   (Followers: 1)
Publications Mathématiques de Besançon : Algèbre et Théorie des Nombres     Open Access  
Publications Mathématiques de L'IHÉS     Hybrid Journal   (Followers: 4)
Punjab University Journal of Mathematics     Open Access   (Followers: 1)
Pure Mathematics and Applications     Open Access  
Pythagoras     Open Access  
Quaestiones Mathematicae     Hybrid Journal  
Qualitative Theory of Dynamical Systems     Hybrid Journal  
Quantum Studies : Mathematics and Foundations     Hybrid Journal   (Followers: 2)
Quarterly Journal of Mathematics     Hybrid Journal  
Rare Metals     Hybrid Journal   (Followers: 2)
Recreational Mathematics Magazine     Open Access  
REDIMAT : Journal of Research in Mathematics Education     Open Access   (Followers: 6)
REMAT : Revista Eletrônica da Matemática     Open Access  
Rendiconti del Circolo Matematico di Palermo     Hybrid Journal  
Reportes Científicos de la FaCEN     Open Access  
Research in Mathematics Education     Hybrid Journal   (Followers: 13)
Research in Nondestructive Evaluation     Hybrid Journal   (Followers: 7)
Research in Number Theory     Hybrid Journal   (Followers: 1)
Research in the Mathematical Sciences     Open Access  
Research Journal of Pure Algebra     Open Access   (Followers: 1)
Researches in Mathematics     Open Access  

  First | 1 2 3 4     

Similar Journals
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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]
  • Rationality of Fano threefolds with terminal Gorenstein singularities, II

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      Abstract: Abstract We classify nonrational Fano threefolds X with terminal Gorenstein singularities such that \(\mathrm {{\text {rk}}}\, \mathrm {{\text {Pic}}}(X)=1\) , \((-K_X)^3\ge 8\) , and \(\mathrm {{\text {rk}}}\, \mathrm {{\text {Cl}}}(X)\le 2\) .
      PubDate: 2022-06-24
       
  • Global stability results for Volterra–Hadamard random partial
           fractional integral equations

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      Abstract: Abstract This paper investigates the existence and stability of random solutions of a class of Hadamard fractional order functional partial integral equations with random effects in Banach spaces.
      PubDate: 2022-06-23
       
  • Proving the solution of Malfatti’s marble problem

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      Abstract: Abstract Malfatti’s problem is more than 200 years old and its solution given by the greedy arrangement has been stated first in 1994. The solution was obtained at that time by considering 14 arrangements and by justifying the exclusion of the non-greedy ones through a complex reasoning relying purely on numerical simulations in several crucial steps. By significantly improving the underlying methods and by filling still extant gaps, a full purely analytical proof of the solution is provided for the first time in the present work, especially based on a mixture of synthetic and analytic Euclidean geometry and on the theory of convex functions.
      PubDate: 2022-06-20
       
  • On generalized semi B-Fredholm operators

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      Abstract: Abstract In this paper we study two new classes of bounded linear operators acting on a Banach space X called lower semi B-Fredholm generalized operators and lower semi Saphar operators, respectively. We characterize a generalized semi B-Fredholm operator as the direct sum of a nilpotent operator and a semi Shapar operator and also we prove the stability of this class of operators under perturbations by operators with finite-range power.
      PubDate: 2022-06-16
       
  • Crossing limit cycles for discontinuous piecewise linear differential
           centers separated by three parallel straight lines

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      Abstract: Abstract In this paper we study the continuous and discontinuous planar piecewise differential systems formed by four linear centers separated by three parallel straight lines denoted by \(\Sigma =\{(x,y)\in {\mathbb {R}}^2: x=-p, x=0, x=q,\ p,q>0\}.\) We prove that when these piecewise differential systems are continuous they have no limit cycles. While for the discontinuous case we show that they can have at most four limit cycles and we also provide examples of such systems with zero, one, and two limit cycles. In particular we have solved the extension of the 16th Hilbert problem to this class of piecewise differential systems.
      PubDate: 2022-06-16
       
  • Some commutativity criteria for prime rings with central values involving
           two endomorphisms

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      Abstract: Abstract The main purpose of this paper is to study the commutativity of a prime ring R with involution of the second kind provided with two endomorphisms satisfying certain algebraic identities. Finally, we provide examples to show that various restrictions imposed in the hypotheses of our theorems are not superfluous.
      PubDate: 2022-06-09
       
  • Existence and uniqueness result for nonlinear anisotropic elliptic
           unilateral problems with variable exponent and measure data

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      Abstract: Abstract This paper treats the existence and uniqueness of entropy solutions for the unilateral problem associated with the Dirichlet problem of the following nonlinear elliptic equation \(\displaystyle {Au -div \phi ( u)=\mu ,}\) where A is a Leray-Lions operator defined on the anisotropic Sobolev space with variable exponent into its dual, the lower order term \(\phi\) is a continuous real function that does not check any growth condition and the second member \(\mu\) is a measure function belongs to \(L^{1}(\Omega )+ W^{-1, \mathbf {p'}(\cdot )}(\Omega )\) with \(W^{-1, \mathbf {p'}(\cdot )}(\Omega )\) is the dual space.
      PubDate: 2022-06-06
       
  • An approximation model for projectile motion under air resistance
           proportional to a power of the speed

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      Abstract: Abstract An application of Newton’s law to the motion of a projectile that is subject to the forces of both gravity and air resistance proportional to some power of the speed gives rise to an initial value problem for which explicit formulas for the exact solutions do not seem to be available. In this article, we solve instead a related problem and then compare the resulting small-angle approximations to the exact solutions and also to the parabolic Galilean flight paths that are traced in the absence of a retarding force. We establish that the trajectories of the exact solutions are always dominated by those of the small-angle approximations which, in turn, are always majorized by the Galilean flight trajectories.
      PubDate: 2022-06-06
       
  • Kirchhoff-type problems involving the fractional p-Laplacian on the
           Heisenberg group

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      Abstract: Abstract In this paper, we are interested in the existence of solutions for a class of Kirchhoff-type problems driven by a non-local integro-differential operator with the homogeneous Dirichlet boundary conditions on the Heisenberg group as follows: $$\begin{aligned} \left\{ \begin{array}{ll} M(\iint _{{\mathbb {H}}^{2N}} u(\xi )-u(\eta ) ^{p}K(\eta ^{-1}\circ \xi )d\xi \,d\eta )\pounds ^{p}_{K}u=f(\xi ,u) &{} { \text{ in } } \Omega ,\\ u=0 &{} { \text{ in } } {\mathbb {H}}^N \setminus \Omega , \end{array} \right. \end{aligned}$$ where \(\pounds ^{p}_{K}\) is a non-local integro-differential operator with singular kernel \(K,\Omega\) is an open bounded subset of the Heisenberg group \({\mathbb {H}}^N\) with Lipshcitz boundary \(\partial \Omega\) . Under some suitable assumptions on the functions M and f, together with the variational methods and the mountain pass theorem, we discuss the existence of weak solutions for the above problem on the Heisenberg group.
      PubDate: 2022-06-04
       
  • Minimal bandwidth for $${\mathbb C}^*$$ C ∗ -actions on generalized
           Grassmannians

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      Abstract: Abstract The bandwidth of a \({\mathbb C}^*\) -action of a polarized pair (X, L) is a natural measure of its complexity. In this paper, we study \({\mathbb C}^*\) -actions on rational homogeneous spaces, determining which provide minimal bandwidth. We prove that the minimal bandwidth is linked to the smallest coefficient of the fundamental weight, in a base of simple roots, which describes the variety as a marked Dynkin diagram. As a direct application of the results we study the Chow groups of the Cayley plane \(\mathrm{E}_6(6)\) .
      PubDate: 2022-06-04
       
  • Weak solutions for some fractional singular (p, q)-Laplacian nonlocal
           problems with Hardy potential

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      Abstract: Abstract Here, a suitable method is presented to treat the elliptic partial derivative equations, especially the fractional singular (p, q)-Laplacian elliptic problems. These kinds of equations are used in the study of fluid flow, diffusive transport akin to diffusion, rheology, probability, electrical networks and etc. The existence of nontrivial solutions for some singular boundary value problems involving the fractional (p, q)-Laplacian operator in a smooth enough bounded domain in \({\mathbb {R}}^N\) is proved. The method is based on the theory of the fractional Sobolev space via the variational method and critical point theory.
      PubDate: 2022-06-03
       
  • On critical double phase Kirchhoff problems with singular nonlinearity

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      Abstract: Abstract The paper deals with the following double phase problem $$\begin{aligned} \begin{aligned}&-m \left[ \int _\Omega \left( \frac{ \nabla u ^p}{p} + a(x) \frac{ \nabla u ^q}{q}\right) \,\mathrm {d}x\right] {\text{div}} \left( \nabla u ^{p-2}\nabla u + a(x) \nabla u ^{q-2}\nabla u \right) \\&\quad = \lambda u^{-\gamma } +u^{p^*-1}&\quad \text {in } \Omega ,\\&u > 0&\quad \text {in } \Omega ,\\&u = 0&\quad \text {on } \partial \Omega , \end{aligned} \end{aligned}$$ where \(\Omega \subset {\mathbb {R}}^N\) is a bounded domain with Lipschitz boundary \(\partial \Omega \) , \(N\ge 2\) , m represents a Kirchhoff coefficient, \(1<p<q<p^*\) with \(p^*=Np/(N-p)\) being the critical Sobolev exponent to p, a bounded weight \(a(\cdot )\ge 0\) , \(\lambda >0\) and \(\gamma \in (0,1)\) . By the Nehari manifold approach, we establish the existence of at least one weak solution.
      PubDate: 2022-06-01
       
  • On mixed local-nonlocal operators with $$(\alpha , \beta )$$ ( α ,
           β ) -Neumann conditions

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      Abstract: Abstract We consider some problems governed by the sum of a Laplacian and of a fractional Laplacian in presence of so–called \((\alpha , \beta )\) -Neumann conditions in an essentially linear context. Indeed, first we show an existence result for asymptotically linear elliptic problems, and then we establish some qualitative properties for solutions of the associated homogeneous parabolic problem, extending to this setting related results in the local case.
      PubDate: 2022-05-27
       
  • The critical fractional Ambrosetti–Prodi problem

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      Abstract: Abstract In this paper we focus on the following nonlocal problem with critical growth: $$\begin{aligned} \left\{ \begin{array}{ll} (-\Delta )^{s} u = \lambda u + u_{+}^{2^{*}_{s}-1} + f(x) &{} \text{ in } \Omega ,\\ u=0 &{} \text{ in } \mathbb {R}^{N}\setminus \Omega , \end{array} \right. \end{aligned}$$ where \(s\in (0, 1)\) , \(N>2s\) , \(\Omega \subset \mathbb {R}^{N}\) is a smooth bounded domain, \(\lambda >0\) , \((-\Delta )^{s}\) is the fractional Laplacian, \(f= te_{1}+h\) where \(t\in \mathbb {R}\) , \(e_{1}\) is the first eigenfunction of \((-\Delta )^{s}\) with homogeneous Dirichlet boundary datum, and \(h\in L^{\infty }(\Omega )\) is such that \(\int _{\Omega } h e_{1}\, dx=0\) . According to the interaction of the nonlinear term with the spectrum of \((-\Delta )^{s}\) , we establish some existence and multiplicity results for the above problem by means of variational methods.
      PubDate: 2022-05-25
       
  • Some applications of simultaneous continuous functional calculus

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      Abstract: Abstract We define and study a continuous functional calculus for a commutative family of normal elements of a \(C^{*}\) -algebra. We obtain that this functional calculus is unique, continuous and satisfies the spectral mapping theorem. We also provide two applications. The first one concerns the existence of a particular orthonormal basis on a locally Hilbert space. The second for multi-dimensional continuous versions of N. Wiener and P. Lé vy theorems.
      PubDate: 2022-05-24
       
  • Prelog Chow rings and degenerations

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      Abstract: Abstract For a simple normal crossing variety X, we introduce the concepts of prelog Chow ring, saturated prelog Chow group, as well as their counterparts for numerical equivalence. Thinking of X as the central fibre in a (strictly) semistable degeneration, these objects can intuitively be thought of as consisting of cycle classes on X for which some initial obstruction to arise as specializations of cycle classes on the generic fibre is absent. Cycle classes in the generic fibre specialize to their prelog counterparts in the central fibre, thus extending to Chow rings the method of studying smooth varieties via strictly semistable degenerations. After proving basic properties for prelog Chow rings and groups, we explain how they can be used in an envisaged further development of the degeneration method by Voisin et al. to prove stable irrationality of very general fibres of certain families of varieties; this extension would allow for much more singular degenerations, such as toric degenerations as occur in the Gross–Siebert programme, to be usable. We illustrate that by looking at the example of degenerations of elliptic curves, which, although simple, shows that our notion of prelog decomposition of the diagonal can also be used as an obstruction in cases where all components in a degeneration and their mutual intersections are rational. We also compute the saturated prelog Chow group of degenerations of cubic surfaces.
      PubDate: 2022-05-23
       
  • An inertial-viscosity algorithm for solving split generalized equilibrium
           problem and a system of demimetric mappings in Hilbert spaces

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      Abstract: Abstract In this paper, we introduce a new inertial-viscosity approximation method for solving a split generalized equilibrium problem and common fixed point problem in real Hilbert spaces. The algorithm is designed such that its convergence does not require the norm of the bounded linear operator underlying the split equilibrium problem. Moreover, a strong convergence result is proved under mild conditions in real Hilbert spaces. Furthermore, we give some numerical examples to show the efficiency and accuracy of the proposed method and we also compare the performance of our algorithm with other related methods in the literature.
      PubDate: 2022-05-23
       
  • Weakly-morphic modules

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      Abstract: Abstract Let R be a commutative ring, M an R-module and \(\varphi _a\) be the endomorphism of M given by right multiplication by \(a\in R\) . We say that M is weakly-morphic if \(M/\varphi _a(M)\cong \ker (\varphi _a)\) as R-modules for every a. We study these modules and use them to characterise the rings \(R/\text {Ann}_R(M)\) , where \(\text {Ann}_R(M)\) is the right annihilator of M. A kernel-direct or image-direct module M is weakly-morphic if and only if each element of \(R/\text {Ann}_R(M)\) is regular as an endomorphism element of M. If M is a weakly-morphic module over an integral domain R, then M is torsion-free if and only if it is divisible if and only if \(R/\text {Ann}_R(M)\) is a field. A finitely generated \(\mathbb {Z}\) -module is weakly-morphic if and only if it is finite; and it is morphic if and only if it is weakly-morphic and each of its primary components is of the form \((\mathbb {Z}_{p^k})^n\) for some non-negative integers n and k.
      PubDate: 2022-05-21
       
  • Commutativity of rings with constraints on endomorphisms

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      Abstract: Abstract Our purpose in this paper is to connect the commutativity of a quotient ring R/P with endomorphisms of R satisfying certain algebraic identities involving prime ideals. The obtained results cover many known theorems (cf. Bell and Daif in Canad Math Bull 37(4):443–447, 1994; Deng and Ashraf in Results Math 30(3–4):259–263, 1996; Oukhtite et al. in Int Electron J Algebra 28:127–140, 2020).
      PubDate: 2022-05-17
       
  • 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
       
 
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