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)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 4)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 13)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 5)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 44)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 2)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 3)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 5)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 7)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 16)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 4)
Advances in Fixed Point Theory     Open Access  
Advances in Geosciences (ADGEO)     Open Access   (Followers: 21)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 7)
Advances in Materials Science     Open Access   (Followers: 23)
Advances in Mathematical Physics     Open Access   (Followers: 6)
Advances in Mathematics     Full-text available via subscription   (Followers: 18)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal  
Advances in Pure Mathematics     Open Access   (Followers: 10)
Advances in Science and Research (ASR)     Open Access   (Followers: 8)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 8)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 2)
Air, Soil & Water Research     Open Access   (Followers: 7)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 3)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 4)
Algebra and Logic     Hybrid Journal   (Followers: 9)
Algebra Colloquium     Hybrid Journal   (Followers: 3)
Algebra Universalis     Hybrid Journal   (Followers: 3)
Algorithmic Operations Research     Open Access   (Followers: 7)
Algorithms     Open Access   (Followers: 15)
Algorithms Research     Open Access   (Followers: 2)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access   (Followers: 1)
American Journal of Mathematical and Management Sciences     Hybrid Journal  
American Journal of Mathematics     Full-text available via subscription   (Followers: 8)
American Journal of Operations Research     Open Access   (Followers: 6)
American Mathematical Monthly     Full-text available via subscription   (Followers: 3)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 13)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 2)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 7)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 3)
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: 3)
Annals of Data Science     Hybrid Journal   (Followers: 17)
Annals of Functional Analysis     Hybrid Journal   (Followers: 2)
Annals of Mathematics     Full-text available via subscription   (Followers: 5)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 13)
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   (Followers: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access   (Followers: 1)
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: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 17)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics     Open Access   (Followers: 6)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 7)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 4)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 4)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Armenian Journal of Mathematics     Open Access  
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 22)
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  
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 2)
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: 1)
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  
Basin Research     Hybrid Journal   (Followers: 6)
BIBECHANA     Open Access  
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal  
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  
British Journal for the History of Mathematics     Hybrid Journal   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
British Journal of Mathematics & Computer Science     Full-text available via subscription   (Followers: 1)
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 3)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 3)
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: 4)
Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics     Open Access  
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  
Calculus of Variations and Partial Differential Equations     Hybrid Journal   (Followers: 1)
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access  
Catalysis in Industry     Hybrid Journal  
CAUCHY     Open Access   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 5)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 1)
Chaos, Solitons & Fractals : X     Open Access   (Followers: 1)
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  
CODEE Journal     Open Access  
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 5)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 22)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 3)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 6)
Complex Analysis and its Synergies     Open Access   (Followers: 1)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Compositio Mathematica     Full-text available via subscription   (Followers: 2)
Comptes Rendus : Mathematique     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 3)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 5)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 12)
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: 12)
Confluentes Mathematici     Hybrid Journal  
Constructive Mathematical Analysis     Open Access  
Contributions to Discrete Mathematics     Open Access  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal   (Followers: 1)
Cross Section     Full-text available via subscription   (Followers: 1)
Cryptography and Communications     Hybrid Journal   (Followers: 11)
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  
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access  
Demographic Research     Open Access   (Followers: 14)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 35)
Desimal : Jurnal Matematika     Open Access  
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 3)
Differentsial'nye Uravneniya     Open Access  
Digital Experiences in Mathematics Education     Hybrid Journal   (Followers: 3)
Discrete Mathematics     Hybrid Journal   (Followers: 7)
Discrete Mathematics & Theoretical Computer Science     Open Access   (Followers: 1)
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Diskretnaya Matematika     Full-text available via subscription  
Doklady Akademii Nauk     Open Access  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Aequationes Mathematicae
Journal Prestige (SJR): 0.517
Citation Impact (citeScore): 1
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1420-8903 - ISSN (Online) 0001-9054
Published by Springer-Verlag Homepage  [2467 journals]
  • Transitive quasi-uniform structures depending on a parameter

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      Abstract: Abstract In a category \({\mathcal {C}}\) with an ( \({\mathcal {E}}\) , \({\mathcal {M}}\) )-factorization structure for morphisms, we prove that any subclass \({\mathcal {N}}\) of \({\mathcal {M}}\) which is closed under pullbacks determines a transitive quasi-uniform structure on \({\mathcal {C}}\) . In addition to providing a categorical characterization of all transitive quasi-uniform structures compatible with a topology, this result also permits us to establish a number of Galois connections related to quasi-uniform structures on \({\mathcal {C}}\) . These Galois connections lead to the description of subcategories of \({\mathcal {C}}\) determined by quasi-uniform structures. Several examples considered at the end of the paper illustrate our results.
      PubDate: 2023-01-11
       
  • Sincov’s and other functional equations and negative interest rates

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      Abstract: Abstract Investigating the future value F(K, s, t) of a capital K invested between dates s and t, the “natural” condition \(F(K,s,t)\ge K\) has lost its naturality because of the strange fact of negative interest rates. This leads to the task of describing the possible solutions of the multiplicative Sincov equation \(f(s,u)=f(s,t)f(t,u)\) for \(s\le t\le u\) where \(f(s,t)=0\) may happen. In this paper we solve this task and discuss connections to the theory of investments.
      PubDate: 2023-01-03
       
  • Characterizations of derivations on spaces of smooth functions

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      Abstract: Abstract We provide a list of equivalent conditions under which an additive operator acting on a space of smooth functions on a compact real interval is a multiple of the derivation.
      PubDate: 2022-12-30
       
  • Hyers-Ulam stability of an  iterative  equation  for  strictly
           increasing continuous functions

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      Abstract: Abstract The Hyers-Ulam stability of the iterative equation \(f^n=F\) for continuous functions F was studied under the assumptions that F is a homeomorphism on its range, and the equation has stability on its range. It is important to study the stability of the equation for homeomorphisms on intervals. In this paper, theorems on stability are obtained using the properties of monotonic approximate solutions. The method is based on the stability of two derived iterative equations.
      PubDate: 2022-12-27
       
  • On forward-order law for core inverse in rings

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      Abstract: Abstract This article establishes a few sufficient conditions of the forward-order law for the core inverse of elements in rings with involution. It also presents the forward-order law for the weighted core inverse and the triple forward-order law for the core inverse. Additionally, we discuss the hybrid forward-order law involving different generalized inverses like the Moore–Penrose inverse, the group inverse, and the core inverse.
      PubDate: 2022-12-26
       
  • A note on the four color theorem

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      Abstract: Abstract Probably the best strategy to give a computer-free proof of the 4-color theorem is to show that the chromatic polynomial of any planar graph evaluated at 4 is nonzero. After making assumptions like no danglers and adding edges if necessary, a connected graph is a ”web” of ”interlocking wheels”. If G is a web of k interlocking wheels obtained from a planar graph, it is conjectured that its chromatic polynomial \(P(G,t) = P_1(t)+ \cdots + P_k(t)\) with all \(P_j(4) >0\) . In this paper, we prove the conjecture in the base case of the interlocking wheels \(W_m\wedge _2W_n\) for \(k = 2\) . As a byproduct, in the last section we apply our result to exponentially simplify the computations to find some interesting facts about a real life graph.
      PubDate: 2022-12-17
       
  • On digital sequences associated with Pascal’s triangle

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      Abstract: Abstract We consider the sequence of integers whose nth term has base-p expansion given by the nth row of Pascal’s triangle modulo p (where p is a prime number). We first present and generalize well-known relations concerning this sequence. Then, with the great help of Sloane’s On-Line Encyclopedia of Integer Sequences, we show that it appears naturally as a subsequence of a 2-regular sequence. Its study provides interesting relations and surprisingly involves odious and evil numbers, Nim-sum and even Gray codes. Furthermore, we examine similar sequences emerging from prime numbers involving alternating sum-of-digits modulo p. This note ends with a discussion about Pascal’s pyramid built with trinomial coefficients.
      PubDate: 2022-12-15
       
  • On s-Stirling transform and poly-Cauchy numbers of the second kind with
           level 2

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      Abstract: Abstract In this paper, we study the transform by Stirling numbers with higher level, and give several concrete results. When \(s=2\) , we consider the transform of rational sequences. In particular, poly-Cauchy numbers of the second kind with level 2 are introduced in order to achieve some extended results. We also give several properties of poly-Cauchy numbers of the second kind with level 2, which are related to those of poly-Bernoulli numbers with level 2 and analogous to those of poly-Cauchy numbers of the first kind with level 2.
      PubDate: 2022-12-11
       
  • On graceful antimagic graphs

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      Abstract: Abstract A graceful labeling of a graph G is an injective function from the vertex set of G to the set \(\{0,1,\dots , E(G) \}\) such that the induced edge labels are all different, where an induced edge label is defined as the absolute value of the difference between the labels of its end vertices. If the induced edge labeling is simultaneously antimagic, i.e., the sums of labels of all edges incident to a given vertex are pairwise distinct for different vertices, we say that the graceful labeling is graceful antimagic. In this paper we deal with the problem of finding some classes of graceful antimagic graphs.
      PubDate: 2022-12-08
       
  • Randomly r-orthogonal factorizations in bipartite graphs

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      Abstract: Abstract Let G be a graph with vertex set V(G) and edge set E(G), and let f be an integer-valued function defined on V(G). It is proved in this paper that every bipartite \((0,mf-m+1)\) -graph has a (0, f)-factorization randomly r-orthogonal to n vertex-disjoint mr-subgraphs of G, which is a generalization of the known result with \(n=1\) given by Zhou and Wu.
      PubDate: 2022-12-05
       
  • Pexiderized d’Alembert functional equations on monoids

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      Abstract: Abstract Let S be a monoid ( \(=\) semigroup with identity), and let \(\sigma :S \rightarrow S\) be a homomorphism such that \(\sigma \circ \sigma = id\) . In an earlier paper we solved the Pexiderized d’Alembert functional equation (PDFE) \(f(xy) + g(\sigma (y)x) = h(x)k(y)\) for unknown \(f,g,h,k:S \rightarrow {{\mathbb {C}}}\) , assuming that S is either regular or generated by its squares and that one of the unknown functions is central. The present paper has two main results. The first describes the solutions of PDFE on a general monoid in terms of multiplicative functions, solutions of a special case of the sine subtraction law, and solutions of other functional equations with just one unknown function. The second main result uses the first one to give a more detailed solution of PDFE on a larger class of monoids than has been treated previously. We also find the continuous solutions on topological monoids. Examples are given to illustrate the results.
      PubDate: 2022-12-01
       
  • Dimension preserving approximation

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      Abstract: Abstract This article introduces the novel notion of dimension preserving approximation for continuous functions defined on [0, 1] and initiates the study of it. Restrictions and extensions of continuous functions in regards to fractal dimensions are also investigated.
      PubDate: 2022-12-01
       
  • Alienation of Drygas’, Cauchy’s, Jensen’s and the quadratic
           equations on semigroups with an involutive automorphism

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      Abstract: Abstract Let S be a semigroup that need not be abelian, \(\sigma :S\rightarrow S\) be an involutive endomorphism and let \((H,+)\) be a uniquely 2-divisible abelian group. We study the solutions \(f,g:S\rightarrow H\) of each of the functional equations $$\begin{aligned} f(xy)+g(xy)+g(x\sigma (y))=f(x)+f(y)+2g(x)+2g(y), \end{aligned}$$ and $$\begin{aligned} f(xy)+g(xy)+g(x\sigma (y))=f(x)+f(y)+2g(x)+g(y)+g(\sigma (y)). \end{aligned}$$ Moreover, we show that the Jensen type equation \(f(xy)+f(x\sigma (y))=2f(x)\ \) and the generalized quadratic functional equation \(g(xy)+g(x\sigma (y))=2g(x)+2g(y)\) are strongly alien in the sense of Dhombres.
      PubDate: 2022-12-01
       
  • Continuous solutions of a system of composite functional equations

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      Abstract: Abstract In this paper we introduce the concept of translation invariant functions: considering an arbitrary set \(\emptyset \ne S \subset {\mathbb {R}}^n\) , the function \(F : S \longrightarrow {\mathbb {R}}\) is translation invariant if \(F(x) = F(y)\) implies \(F(x+t)=F(y+t)\) for any vectors \(x,y,t \in {\mathbb {R}}^n\) such that \(x ,y , x+t ,y+t \in S\) . In our main results we shall consider an open, connected set \(\emptyset \ne D \subset {\mathbb {R}}^n\) . We prove that if \(F : D \longrightarrow {\mathbb {R}}\) is a translation invariant, continuous function, then there exists a vector \(a = (a_1, \dots , a_n) \in {\mathbb {R}}^n\) and a strictly monotone, continuous function f such that $$\begin{aligned} F(x_1, \dots , x_n) = f (a_1 x_1 + \dots + a_n x_n) \end{aligned}$$ holds for all \((x_1, \dots , x_n) \in D \,\) . Using this result we also show that continuous solutions \( F : D \longrightarrow {\mathbb {R}}\) of the system of functional equations $$\begin{aligned} F(x_1 , \dots , x_j + t_j , \dots , x_n) = \Psi _j (F (x_1 , \dots , x_j , \dots , x_n), t_j) \ \ (j=1,\dots ,n) \end{aligned}$$ can be represented as the composition of a strictly monotone, continuous function and a linear functional as well. Applying the latter theorem, we give a characterization of Cobb–Douglas type utility functions.
      PubDate: 2022-12-01
       
  • Characterization of affine differences and related forms

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      Abstract: Abstract In the present paper we consider the problem of characterization of maps which can be expressed as an affine difference i.e. a three-place map of the form $$\begin{aligned} tf(x)+(1-t)f(y)-f(tx+(1-t)y). \end{aligned}$$ We give a general solution of a functional equation associated with this problem.
      PubDate: 2022-12-01
       
  • On a polygonal mean value property

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      Abstract: Abstract We give a characterization of continuous functions in a complex plane domain satisfying a weighted polygonal mean value property.
      PubDate: 2022-12-01
       
  • A new equation related to two-sided centralizers in prime rings

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      Abstract: Abstract In this paper we prove the following result: Let R be a prime ring with \(char(R)\ne 2,3,5\) and let \(T:R\rightarrow R\) be an additive mapping satisfying the relation \( T(x^{4})=xT(x^2)x\) for all \(x\in R\) . In this case T is of the form \(T(x)=\lambda x\) for all \(x\in R\) and some fixed element \(\lambda \in C\) , where C is the extended centroid of R.
      PubDate: 2022-12-01
       
  • The 58th International Symposium on Functional Equations Bilesdungshaus
           Grillhof, Innsbruck (Austria), June 19–26, 2022 Dedicated to the memory
           of János Aczél, founder of the Symposia

    • Free pre-print version: Loading...

      PubDate: 2022-11-07
      DOI: 10.1007/s00010-022-00920-3
       
  • Graph Lipscomb’s space is a generalized Hutchinson–Barnsley
           fractal

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      Abstract: Abstract Being a universal space for weight \(\left A\right \ge \aleph _{0}\) metric spaces Lipscomb’s space \(J_{A}\) has a central role in topological dimension theory. There exists a strong connection between topological dimension theory and fractal set theory since on the one hand, some classical fractals play the role of universal spaces and on the other hand the universal space \(J_{A}\) is a generalized Hutchinson–Barnsley fractal (i.e. the attractor of a possibly infinite iterated function system). In this paper we introduce a generalization of \(J_{A}\) , namely the concept of graph Lipscomb’s space \(J_{A}^{{\mathcal {G}}}\) associated with a graph \({\mathcal {G}}\) on the set A, and we prove that its imbedded version in \(l^{2}(A^{\prime })\) , where \(A^{\prime }=A\setminus \{z\}\) , z being a fixed element of the set A having at least two elements, is a generalized Hutchinson–Barnsley fractal.
      PubDate: 2022-10-29
      DOI: 10.1007/s00010-022-00918-x
       
  • Inequalities of Sherman type involving both $$h_1$$ -convex and $$h_2$$
           -concave functions with applications

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      Abstract: Abstract In this paper, we establish some inequalities involving both \(h_1\) -convex functions and \(h_2\) -concave functions such that \( (h_1,h_2) \) is an increasing pair of functions. We apply the obtained results to Breckner’s s-convex functions, P-convex functions and Godunova–Levin functions. In order to unify the results, we introduce generalized s-convex functions of the second kind.
      PubDate: 2022-10-18
      DOI: 10.1007/s00010-022-00915-0
       
 
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