Subjects -> MATHEMATICS (Total: 1100 journals)
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    - MATHEMATICS (812 journals)
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    - PROBABILITIES AND MATH STATISTICS (110 journals)

MATHEMATICS (812 journals)                  1 2 3 4 5 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 5)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 7)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 4)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 40)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 12)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 23)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access   (Followers: 8)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 19)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 11)
Advances in Materials Science     Open Access   (Followers: 19)
Advances in Mathematical Physics     Open Access   (Followers: 8)
Advances in Mathematics     Full-text available via subscription   (Followers: 17)
Advances in Nonlinear Analysis     Open Access   (Followers: 1)
Advances in Numerical Analysis     Open Access   (Followers: 9)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal   (Followers: 4)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 10)
Advances in Pure Mathematics     Open Access   (Followers: 11)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 9)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 7)
Afrika Matematika     Hybrid Journal   (Followers: 3)
Air, Soil & Water Research     Open Access   (Followers: 13)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 3)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 1)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 6)
Algebra and Logic     Hybrid Journal   (Followers: 8)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Open Access   (Followers: 5)
Algorithms     Open Access   (Followers: 12)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 10)
American Journal of Mathematical Analysis     Open Access   (Followers: 2)
American Journal of Mathematical and Management Sciences     Hybrid Journal   (Followers: 1)
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 8)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 11)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6)
Analysis Mathematica     Full-text available via subscription  
Analysis. International mathematical journal of analysis and its applications     Hybrid Journal   (Followers: 5)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access   (Followers: 7)
Annales Mathematicae Silesianae     Open Access   (Followers: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 14)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 8)
Annals of Functional Analysis     Hybrid Journal   (Followers: 3)
Annals of Mathematics     Full-text available via subscription   (Followers: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 14)
Annals of PDE     Hybrid Journal  
Annals of Pure and Applied Logic     Open Access   (Followers: 5)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 14)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics     Open Access   (Followers: 8)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 2)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 4)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 4)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Armenian Journal of Mathematics     Open Access   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 24)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access   (Followers: 1)
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 3)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 2)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 2)
Banach Journal of Mathematical Analysis     Hybrid Journal   (Followers: 2)
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 2)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal   (Followers: 1)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 3)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 13)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 3)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Cadernos do IME : Série Matemática     Open Access   (Followers: 1)
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 22)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 3)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals : X     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access   (Followers: 1)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
CODEE Journal     Open Access   (Followers: 3)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 4)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 15)
Commentarii Mathematici Helvetici     Hybrid Journal  
Communications in Advanced Mathematical Sciences     Open Access  
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 4)
Complex Analysis and its Synergies     Open Access   (Followers: 3)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Compositio Mathematica     Full-text available via subscription  
Comptes Rendus Mathematique     Full-text available via subscription  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 1)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 9)
Computational Mechanics     Hybrid Journal   (Followers: 5)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
Contributions to Discrete Mathematics     Open Access   (Followers: 2)
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 13)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access   (Followers: 2)
Demographic Research     Open Access   (Followers: 15)
Demonstratio Mathematica     Open Access  

        1 2 3 4 5 | Last

Similar Journals
Journal Cover
Advances in Operator Theory
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2662-2009 - ISSN (Online) 2538-225X
Published by Springer-Verlag Homepage  [2626 journals]
  • Some functorial properties of Schatten classes
    • Abstract: Abstract In this paper, we begin with the study of elements in \(C^*\)-algebras which are mapped to Schatten class ideals through the faithful left regular representation. We further give some functorial properties of Schatten classes on the category of representations of a \(C^*\)-algebra and category of unitary representations of a group.
      PubDate: 2020-03-04
       
  • Products of two normal operators
    • Abstract: Abstract We obtain some necessary or sufficient conditions for an operator on a complex separable Hilbert space to be expressible as a product of two normal operators. For example, it is shown that if T is such a product, then \(\dim \ker T \ge \dim \ (\ker T^*\ \cap \ \mathrm {ran}\, T^*)\). On the other hand, any operator T satisfying \(\dim \ker T^* \ge \dim \ker T\) and \(\dim \ (\ker T\ \cap \ \overline{\mathrm {ran}\, T})\ge \dim \ (\ker T^*\ \cap \ \mathrm {ran}\, T^*\)) is a product of two normal operators. Such results complement our previous ones on the products of finitely many normal operators. We also obtain characterizations for products of two essentially normal operators.
      PubDate: 2020-03-02
       
  • Rayna’s fractional integral operations on Hermite–Hadamard
           inequalities with $$\eta$$η - G -Preinvex functions
    • Abstract: Abstract In this note, we get solutions focusing on integral inequalities of Hermite–Hadamard type and unusual attached to it, with \(\eta\)-G-pre invex functions by the way of fractional integral operator selected by Raina R. K.
      PubDate: 2020-02-19
       
  • Probability inequalities and tail estimates for metric semigroups
    • Abstract: Abstract We study probability inequalities leading to tail estimates in a general semigroup \({\mathscr {G}}\) with a translation-invariant metric \(d_{\mathscr {G}}\). (An important and central example of this in the functional analysis literature is that of \({\mathscr {G}}\) a Banach space.) Using our prior work Khare and Rajaratnam (Ann Prob 45(6A):4101–4111, 2017) that extends the Hoffmann–Jørgensen inequality to all metric semigroups, we obtain tail estimates and approximate bounds for sums of independent semigroup-valued random variables, their moments, and decreasing rearrangements. In particular, we obtain the “correct” universal constants in several cases, extending results in the Banach space literature by Johnson et al. (Ann Prob 13(1):234-253, 1985), Hitczenko (Ann Prob 22(1):453–468, 1994), and Hitczenko and Montgomery-Smith (Ann Prob 29(1):447-466, 2001). Our results also hold more generally, in a very primitive mathematical framework required to state them: metric semigroups \({\mathscr {G}}\). This includes all compact, discrete, or (connected) abelian Lie groups.
      PubDate: 2020-02-18
       
  • Bounds for the eigenvalues of monic matrix polynomials from numerical
           radius inequalities
    • Abstract: Abstract We apply several numerical radius inequalities to the Frobenius companion matrices of monic matrix polynomials to derive new bounds for the eigenvalues of these polynomials. One of our bounds improves upon an earlier bound due to Higham and Tisseur.
      PubDate: 2020-02-18
       
  • Existence of solutions for a nonlocal type problem in fractional Orlicz
           Sobolev spaces
    • Abstract: Abstract In this paper, we investigate the existence of weak solution for a fractional type problems driven by a nonlocal operator of elliptic type in a fractional Orlicz–Sobolev space, with homogeneous Dirichlet boundary conditions. We first extend the fractional Sobolev spaces \(W^{s,p}\) to include the general case \(W^sL_A\), where A is an N-function and \(s\in (0,1)\). We are concerned with some qualitative properties of the space \(W^sL_A\) (completeness, reflexivity and separability). Moreover, we prove a continuous and compact embedding theorem of these spaces into Lebesgue spaces.
      PubDate: 2020-02-17
       
  • Estimation of upper bounds of certain matrix operators on Binomial
           weighted sequence spaces
    • Abstract: Abstract In this article, we introduce binomial weighted sequence spaces \(b_p^{r,s}(w)\)\((1\le p<\infty )\), where \(w=(w_n)\) is a non-negative decreasing sequence of real numbers, and investigate some topological and inclusion properties of the new spaces. We give an upper estimation of \(\left\ A\right\ _{\ell _p(w),b_p^{r,s}(w)}\), where A is the Hausdorff matrix operator or Nörlund matrix operator. A Hardy type formula is established in the case of Hausdorff matrix operator. In the final section, we give an upper estimation for the transpose of Nörlund matrix as an operator from \(\ell _p\) to \(b_p^{r,s}\).
      PubDate: 2020-02-17
       
  • Matrix Hölder-McCarthy inequality via matrix geometric means
    • Abstract: Abstract In this paper, by virtue of an expression of matrix geometric means for positive semidefinite matrices via the Moore-Penrose inverse, we show matrix versions of the Hölder-McCarthy inequality, the Hölder inequality and quasi-arithmetic power means via matrix geometric means, and their reverses for positive definite matrices via the generalized Kantorovich constant.
      PubDate: 2020-02-13
       
  • Automatic continuity of almost 3-homomorphisms and almost 3-Jordan
           homomorphisms
    • Abstract: Abstract For a Banach algebra A and a semisimple commutative Banach algebra B, we prove that every 3-homomorphism \(\varphi :A\longrightarrow B\) is automatically continuous, and we generalize this result for almost 3-homomorphism. We also investigate the automatic continuity of almost 3-Jordan homomorphisms and show that if A is a commutative Banach algebra, then every almost 3-Jordan homomorphism \(\varphi :A\longrightarrow \mathbb {C}\) is automatically continuous.
      PubDate: 2020-02-05
       
  • Operator means deformed by a fixed point method
    • Abstract: Abstract By means of a fixed point method we discuss the deformation of two-variable and multivariate operator means of positive definite matrices/operators. It is shown that the deformation of any operator mean in the Kubo–Ando sense becomes again an operator mean in the same sense. The operator means deformed by the weighted power means with two parameters are particularly examined.
      PubDate: 2020-02-05
       
  • Products of asymmetric truncated Toeplitz operators
    • Abstract: Abstract This paper is concerned with asymmetric truncated Toeplitz operators, which are compressions of multiplication operators acting between two model spaces. We give necessary and sufficient conditions so that the product of two asymmetric truncated Toeplitz operators is also an asymmetric truncated Toeplitz operator. Then we define analogue classes to the Sedlock classes, which consist on the algebras of truncated Toeplitz operators, and deal with the case of two inner functions such that one divides the other. Some examples of the product of rank-one asymmetric truncated Toeplitz operators involving inner functions are also given.
      PubDate: 2020-02-01
       
  • Reverse-order law for weighted Moore–Penrose inverse of tensors
    • Abstract: Abstract The weighted Moore–Penrose inverse of a tensor via the Einstein product is introduced in the literature, very recently. The objective of this paper is to study the reverse-order law for the weighted Moore–Penrose inverse. In this context, a few properties of the weighted Moore–Penrose inverse of an arbitrary order tensor via the Einstein product are discussed. Some new sufficient conditions for the reverse-order law of even-order square tensors are obtained. Several characterizations of the reverse-order law for the weighted Moore–Penrose inverse of tensors via the same product are also presented.
      PubDate: 2020-02-01
       
  • Interior $$C^{1,\alpha }$$C1,α regularity for the linearized
           Monge–Ampère equation with VMO type coefficients
    • Abstract: Abstract In this paper, we establish interior \(C^{1,\alpha }\) estimates for solutions of the linearized Monge–Ampère equation $$\begin{aligned} {\mathcal {L}}_{\phi }u:=\text {tr}[\varPhi D^2 u]=f, \end{aligned}$$where the density of the Monge–Ampère measure \(g:=\text {det}D^2\phi \) satisfies a VMO-type condition and \(\varPhi :=(\text {det}D^2\phi )(D^2\phi )^{-1}\) is the cofactor matrix of \(D^2\phi \).
      PubDate: 2020-02-01
       
  • A study of reciprocal Dunford–Pettis-like properties on Banach
           spaces
    • Abstract: Abstract In this article, we study the relationship between p- (V) subsets and p-\( (V^{*})\) subsets of dual spaces. We investigate the Banach space X with the property that the adjoint of every p-convergent operator \( T:X\rightarrow Y \) is weakly q-compact, for every Banach space Y. Moreover, we define the notion of q-reciprocal Dunford–Pettis\( ^{*} \) property of order p on Banach spaces and obtain a characterization of Banach spaces with this property. Also, the stability of reciprocal Dunford–Pettis property of order p for projective tensor product is given.
      PubDate: 2020-02-01
       
  • Weighted composition operators between weighted-type spaces and the Bloch
           space and BMOA
    • Abstract: Abstract Let \({\mathbb {D}}\) denote the open unit disk in \({\mathbb {C}}\). For an integer \(n\ge 0\), let \(V_n\) be the space defined recursively by $$\begin{aligned} V_0=\big \{f:{\mathbb {D}}\rightarrow {\mathbb {C}}: f \text { analytic}, f(z) =O\big ((1- z )^{-1}\big )\big \}, \end{aligned}$$and for \(n\ge 1\), \(f\in V_n\) if and only if \(f'\in V_{n-1}\). In this work, we characterize the bounded and the compact weighted composition operators between \(V_n\) and the Bloch space and the space BMOA of analytic functions of bounded mean oscillation, respectively. We also show that the bounded (respectively, compact) weighted composition operators mapping the space BMOA into \(V_n\) are precisely the same as the bounded (respectively, compact) weighted composition operators mapping the Bloch space into \(V_n\).
      PubDate: 2020-02-01
       
  • Convergence of the continuous wavelet transform with rotations in higher
           dimensions
    • Abstract: Abstract The continuous wavelet transform with rotations in higher dimensions is used to prove the regularity of distributions u under \(Qu = v\), where v is a distribution with compact support of class \(C^{\infty }(\mathbb {R}^n)\) in a neighborhood of some given point \(x = b_0\) in \(\mathbb {R}^n\) and where \(Q = \sum _{ \alpha = p} c_{\alpha }\partial ^{\alpha }\) is a linear partial differential operator of order \(p > 0\) with constant coefficients \(c_{\alpha }\), under the assumption that the continuous wavelet transform with rotations converges in a neighborhood of \(x = b_0\).
      PubDate: 2020-02-01
       
  • A new approach for characterizing linear isometries between Lipschitz
           spaces
    • Abstract: Abstract Let (X, d) be a compact metric sapce and \(\mathrm{Lip}(X,d)\) denote the Banach space of all scalar-valued Lipschitz functions f on (X, d) endowed with the norm \(\Vert f\Vert _{X,L_{(X,d)}}=\max \{ \Vert f\Vert _X,L_{(X,d)}(f)\}\), where \(\Vert f\Vert _X=\sup \{ f(x) : x \in X \}\) and \(L_{(X,d)}(f)\) is the Lipschitz constant of f on (X, d). Applying the extreme point techniques, linear Lipschitz isometries between \(\mathrm{Lip}(X,d)\)-spaces have been characterized in Jiménez-Vargas and Villegas-Vallecillos (J Math 34:1165–1184, 2008). In this paper we introduce norm-attaining unit functions in Lipschitz spaces and apply this consept for characterizing into and onto linear Lipschitz isometries T from \(\mathrm{Lip}(X,d)\) to \(\mathrm{Lip}(Y,\rho )\). In particular, we generalize the result given by Jiménez-Vargas and Villegas-Vallecillos in the surjectivity case of T by omitting the nonvanishing condition for \( T1_{X} \) on Y.
      PubDate: 2020-02-01
       
  • Product formulas in the framework of mean ergodic theorems
    • Abstract: Abstract An extension of Chernoff’s product formula for one-parameter functions taking values in the space of bounded linear operators on a Banach space is given. Essentially, the n-th one-parameter function in the product formula is mapped by the n-th iterate of a contraction acting on the space of the one-parameter functions. The motivation to study this specific product formula lies in the growing field of dynamical control of quantum systems, involving the procedure of dynamical decoupling and also the Quantum Zeno effect.
      PubDate: 2020-02-01
       
  • Compact embedding theorems for fractional Sobolev spaces with variable
           exponents
    • Abstract: Abstract In this paper we state and prove a new compact embedding theorem for fractional Sobolev spaces with variable exponents. As a consequence, we obtain version of the Rellich–Kondrachov theorem in this setting.
      PubDate: 2020-02-01
       
  • Decomposition of partial isometries with finite ascent
    • Abstract: Abstract We focus in this paper on the study of the decomposition of partial isometries with finite ascent satisfying suitable conditions on the kernel sequence. We show that a propagation phenomena occurs for such partial isometries and we give a structure theorem for partial isometries with finite ascent. We also exhibit several examples illustrating different situations.
      PubDate: 2020-02-01
       
 
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