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 601 - 538 of 538 Journals sorted alphabetically Results in Control and Optimization Results in Mathematics Results in Nonlinear Analysis Review of Symbolic Logic       (Followers: 2) Reviews in Mathematical Physics       (Followers: 1) Revista Baiana de Educação Matemática Revista Bases de la Ciencia Revista BoEM - Boletim online de Educação Matemática Revista Colombiana de Matemáticas       (Followers: 1) Revista de Ciencias Revista de Educación Matemática Revista de la Escuela de Perfeccionamiento en Investigación Operativa Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas Revista de Matemática : Teoría y Aplicaciones       (Followers: 1) Revista Digital: Matemática, Educación e Internet Revista Electrónica de Conocimientos, Saberes y Prácticas Revista Integración : Temas de Matemáticas Revista Internacional de Sistemas Revista Latinoamericana de Etnomatemática Revista Latinoamericana de Investigación en Matemática Educativa Revista Matemática Complutense Revista REAMEC : Rede Amazônica de Educação em Ciências e Matemática Revista SIGMA Ricerche di Matematica RMS : Research in Mathematics & Statistics Royal Society Open Science       (Followers: 7) Russian Journal of Mathematical Physics Russian Mathematics Sahand Communications in Mathematical Analysis Sampling Theory, Signal Processing, and Data Analysis São Paulo Journal of Mathematical Sciences Science China Mathematics       (Followers: 1) Science Progress       (Followers: 1) Sciences & Technologie A : sciences exactes Selecta Mathematica       (Followers: 1) SeMA Journal Semigroup Forum       (Followers: 1) Set-Valued and Variational Analysis SIAM Journal on Applied Mathematics       (Followers: 11) SIAM Journal on Computing       (Followers: 11) SIAM Journal on Control and Optimization       (Followers: 18) SIAM Journal on Discrete Mathematics       (Followers: 8) SIAM Journal on Financial Mathematics       (Followers: 3) SIAM Journal on Mathematics of Data Science       (Followers: 1) SIAM Journal on Matrix Analysis and Applications       (Followers: 3) SIAM Journal on Optimization       (Followers: 12) Siberian Advances in Mathematics Siberian Mathematical Journal Sigmae SILICON SN Partial Differential Equations and Applications Soft Computing       (Followers: 7) Statistics and Computing       (Followers: 14) Stochastic Analysis and Applications       (Followers: 3) Stochastic Partial Differential Equations : Analysis and Computations       (Followers: 2) Stochastic Processes and their Applications       (Followers: 6) Stochastics and Dynamics       (Followers: 2) Studia Scientiarum Mathematicarum Hungarica       (Followers: 1) Studia Universitatis Babeș-Bolyai Informatica Studies In Applied Mathematics       (Followers: 1) Studies in Mathematical Sciences       (Followers: 1) Superficies y vacio Suska Journal of Mathematics Education       (Followers: 1) Swiss Journal of Geosciences       (Followers: 1) Synthesis Lectures on Algorithms and Software in Engineering       (Followers: 2) Synthesis Lectures on Mathematics and Statistics       (Followers: 1) Tamkang Journal of Mathematics Tatra Mountains Mathematical Publications Teaching Mathematics       (Followers: 10) Teaching Mathematics and its Applications: An International Journal of the IMA       (Followers: 4) Teaching Statistics       (Followers: 8) Technometrics       (Followers: 8) The Journal of Supercomputing       (Followers: 1) The Mathematica journal The Mathematical Gazette       (Followers: 1) The Mathematical Intelligencer The Ramanujan Journal The VLDB Journal       (Followers: 2) Theoretical and Mathematical Physics       (Followers: 7) Theory and Applications of Graphs Topological Methods in Nonlinear Analysis Transactions of the London Mathematical Society       (Followers: 1) Transformation Groups Turkish Journal of Mathematics Ukrainian Mathematical Journal Uniciencia Uniform Distribution Theory Unisda Journal of Mathematics and Computer Science Unnes Journal of Mathematics       (Followers: 1) Unnes Journal of Mathematics Education       (Followers: 2) Unnes Journal of Mathematics Education Research       (Followers: 1) Ural Mathematical Journal Vestnik Samarskogo Gosudarstvennogo Tekhnicheskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki Vestnik St. Petersburg University: Mathematics VFAST Transactions on Mathematics       (Followers: 1) Vietnam Journal of Mathematics Vinculum Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics       (Followers: 2) Water SA       (Followers: 1) Water Waves Zamm-Zeitschrift Fuer Angewandte Mathematik Und Mechanik       (Followers: 1) ZDM       (Followers: 2) Zeitschrift für angewandte Mathematik und Physik       (Followers: 2) Zeitschrift fur Energiewirtschaft Zetetike

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Similar Journals
 Results in MathematicsJournal Prestige (SJR): 0.582 Citation Impact (citeScore): 1Number of Followers: 0      Hybrid journal (It can contain Open Access articles) ISSN (Print) 1420-9012 - ISSN (Online) 1422-6383 Published by Springer-Verlag  [2469 journals]
• Batalin–Vilkovisky Structure on Hochschild Cohomology of Zigzag Algebra
of Type $$\widetilde{\mathbf {A}}_{1}$$ A ~ 1

Abstract: In this paper, we study the Batalin–Vilkovisky structure on the Hochschild cohomology of quantum zigzag algebras $$A_{{\mathfrak {q}}}$$ of type $$\widetilde{\mathbf {A}}_{1}$$ . We first calculate the dimensions of Hochschild homology groups and Hochschild cohomology groups of $$A_{{\mathfrak {q}}}$$ . Based on these computations, we determine the Hochschild cohomology ring of $$A_{{\mathfrak {q}}}$$ , and give the Batalin-Vilkovisky operator and the Gerstenhaber bracket on Hochschild cohomology ring of $$A_{{\mathfrak {q}}}$$ explicitly.
PubDate: 2022-08-03

• Local Conicity and Polyhedrality of Convex Sets

Abstract: A convex set in the n-dimensional vector space is called boundedly polyhedral provided its intersection with every polytope is a polytope (possibly empty). We refine existing results on bounded polyhedrality of line-free closed convex sets in terms of local conicity and local polyhedrality at their extreme points and halflines.
PubDate: 2022-08-01

• On Douglas Warped Product Metrics

Abstract: We study the new warped metric proposed by P. Marcal and Z. Shen. We obtain the differential equation of such metrics with vanishing Douglas curvature. By solving this equation, we obtain all Douglas warped product metrics. We show that Landsberg and Berwald warped product metrics are equivalent. We classify Douglas Ricci-flat metrics. Examples are included.
PubDate: 2022-08-01

• H.S.M. Coxeter’s Theory of Accessibility: From Mario Pieri to Marvin
Greenberg

Abstract: In the 1960s, H. S. M. Coxeter adopted a set of incidence axioms similar to one O. Veblen and J. W. Young proposed in 1910, to study projective spaces for which a field of elements of a commutative number system is an algebraic model. Coxeter introduced a theory called “accessibility,” which is applicable to the study of conics defined in 1847 by G. K. C. von Staudt, and the partitioning of projective planes in terms of them. In a conversation of 1989, Coxeter revealed that he used ideas from an 1898 paper of M. Pieri to define the relation of accessible points in a continuity-independent projective plane. In 1979, M.J. Greenberg reinterpreted that relation in such a plane using incidence and order axioms from another of Coxeter’s works. We compare the axiomatic bases on which Coxeter, Greenberg, and Pieri construct projective planes with and without continuity, using synthetic methods to introduce analytic ones. We show how several of their publications intersect in significant ways. Other paths emerge from these investigations, such as one that examines the origins of a statement postulated by Pieri, often credited to Pasch, which Coxeter attributed to Veblen.
PubDate: 2022-07-30

• A Generalization of a Question Asked by B. H. Neumann

Abstract: Let $$w \in F_2$$ be a word and let m and n be two positive integers. We say that a finite group G has the $$w_{m,n}$$ -property if however a set M of m elements and a set N of n elements of the group is chosen, there exist at least one element $$x \in M$$ and at least one element $$y \in N$$ such that $$w(x,y)=1.$$ Assume that there exists a constant $$\gamma < 1$$ such that whenever w is not the identity in a finite group X, then the probability that $$w(x_1,x_2)=1$$ in X is at most $$\gamma .$$ If $$m\le n$$ and G satisfies the $$w_{m,n}$$ -property, then either w is the identity in G or G is bounded in terms of $$\gamma , m$$ and n. We apply this result to the 2-Engel word.
PubDate: 2022-07-29

• Well-posedness for a Class of Pseudodifferential Diffusion Equations on
the Torus

Abstract: In this work we establish the well-posedness of the Cauchy problem for a class of pseudodifferential diffusion equations on the torus. The class considered includes fractional diffusion equations and as a special case we consider fractional diffusion equations with drift. By applying toroidal pseudodifferential calculus we establish regularity estimates, existence and uniqueness with respect to the usual Sobolev spaces on the torus.
PubDate: 2022-07-29

• Sensitivity of Iterated Function Systems Under the Product Operation

Abstract: In this paper, $${\mathcal {F}}=\{X; f_\lambda \lambda \in \varLambda _1\}$$ and $${\mathcal {G}}=\{Y; g_\gamma \gamma \in \varLambda _2\}$$ are two iterative function systems defined on the compact metric spaces $$(X,d_1)$$ and $$(Y,d_2)$$ , respectively, where $$\varLambda _1,\varLambda _2$$ are finite nonempty sets. The concepts of a stronger form of sensitive (i.e., ergodically sensitive, thickly syndetically sensitive, thickly sensitive, syndetically sensitive, cofinitely sensitive, Li–Yorke sensitive, and infinite sensitive) for iterated function systems are introduced. In particular, for every integer $$k\ge 2,k\in {\mathbb {N}}$$ , it is shown that $${\mathcal {F}}\times {\mathcal {G}}$$ and $${\mathcal {F}}^{k}\times {\mathcal {G}}^{k}$$ are equivalent to Li–Yorke sensitive (resp., infinite sensitive, sensitive). What’s more, some necessary and sufficient conditions for $${\mathcal {F}}\times {\mathcal {G}}$$ to be sensitive (resp., ergodically sensitive, thickly syndetically sensitive, thickly sensitive, syndetically sensitive, or cofinitely sensitive) are obtained.
PubDate: 2022-07-29

• Isometries and Approximate Local Isometries Between $$\mathrm {AC}^p(X)$$
AC p ( X ) -Spaces

Abstract: Let X and Y be compact subsets of $$\mathbb {R}$$ with at least two points. For $$p\ge 1$$ , let $$\mathrm {AC}^p(X)$$ be the space of all absolutely continuous complex-valued functions f on X such that $$f'\in L^{p}(X)$$ , with the norm $$\left\ f\right\ _{\Sigma }=\left\ f\right\ _\infty +\Vert f'\Vert _p$$ . We describe the topological reflexive closure of the set of linear isometries from $$\mathrm {AC}^p(X)$$ onto $$\mathrm {AC}^p(Y)$$ . Using this description, we prove that such a set is algebraically reflexive and 2-algebraically reflexive. Moreover, as another application, it is shown that the sets of isometric reflections and generalized bi-circular projections of $$\mathrm {AC}^p(X)$$ are topologically reflexive and 2-topologically reflexive.
PubDate: 2022-07-29

• The Poincare Lemma for Codifferential, Anticoexact Forms, and Applications
to Physics

Abstract: The linear homotopy theory for codifferential operator on Riemannian manifolds is developed in analogy to a similar idea for exterior derivative. The main object is the cohomotopy operator, which singles out a module of anticoexact forms from the module of differential forms defined on a star-shaped open subset of a manifold. It is shown that there is a direct sum decomposition of a differential form into coexact and anticoexat parts. This decomposition gives a new way of solving exterior differential systems. The method is applied to equations of fundamental physics, including vacuum Dirac-Kähler equation, coupled Maxwell-Kalb-Ramond system of equations occurring in a bosonic string theory and its reduction to the Dirac equation.
PubDate: 2022-07-29

• Special Slant Surfaces with Non-constant Mean Curvature in 2-Dimensional
Complex Space Forms

Abstract: In the late 1990s, B. Y. Chen introduced the notion of special slant surfaces in Kähler surfaces and classified non-minimal proper special slant surfaces with constant mean curvature in 2-dimensional complex space forms. In this paper, we completely classify proper special slant surfaces with non-constant mean curvature in 2-dimensional complex space forms.
PubDate: 2022-07-29

• On n-saturated Closed Graphs

Abstract: Geschke proved in [2] that there is a clopen graph on $$2^\omega$$ which is 3-saturated, but the clopen graphs on $$2^\omega$$ do not even have infinite subgraphs that are 4-saturated; however there is $$F_\sigma$$ graph that is $$\omega _1$$ -saturated. It turns out that there is no closed graph on $$2^\omega$$ which is $$\omega$$ -saturated, see [3]. In this note we complete this picture by proving that for every $$n\in {\mathbb {N}}$$ there is an n-saturated closed graph on the Cantor space $$2^\omega$$ . The key lemma is based on probabilistic argument. The final construction is an inverse limit of finite graphs.
PubDate: 2022-07-29

• Pseudo-Isotropic Lorentzian Centroaffine Hypersurfaces 2

Abstract: In this paper, we classify locally 2 and 3 dimensional pseudo-isotropic Lorentzian centroaffine hypersurfaces with vanishing $$K^2$$ .
PubDate: 2022-07-25

• Quasi-Metric Properties of the Dual Cone of an Asymmetric Normed Space

Abstract: We obtain some quasi-metric properties of the dual cone of an asymmetric normed space. Thus, we prove that it is balanced, and hence its topology is completely regular. We also prove that it is complete in the sense of D. Doitchinov. These results generalize those obtained by Romaguera et al. In [18] because, in our study, the asymmetric normed space does not necessarily satisfy the $$T_1$$ axiom. Moreover, we provide a class of asymmetric normed spaces whose dual cones are right K-sequentially complete. Finally, we represent an arbitrary asymmetric normed space as a function space by using the unit ball of its dual space.
PubDate: 2022-07-22

• Generalization of the Heyde Theorem to Some Locally Compact Abelian Groups

Abstract: According to the well-known Heyde theorem, the Gaussian distribution on the real line is characterized by the symmetry of the conditional distribution of one linear form of independent random variables given another. In the article we study analogues of this theorem for some locally compact Abelian groups. We consider linear forms of two independent random variables with values in a locally compact Abelian group X, whose characteristic functions do not vanish. Unlike most previous works, we do not impose any restrictions on coefficients of the linear forms. They are arbitrary topological automorphisms of X.
PubDate: 2022-07-15

• On Centroaffine Tchebychev Hypersurfaces with Constant Sectional Curvature

Abstract: In this paper, we study the interesting open problem of classifying the locally strongly convex centroaffine Tchebychev hypersurfaces in $${\mathbb {R}}^{n+1}$$ with constant sectional curvature. First, for arbitrary dimensions we solve the problem by assuming that the centroaffine shape operator vanishes. Second, extending the solved cases of $$n=2,3$$ , we continue working with the case $$n=4$$ . As the result, we establish a complete classification of the flat hyperbolic centroaffine Tchebychev hypersurfaces in $${\mathbb {R}}^5$$ .
PubDate: 2022-07-14

• Reflection Principles for Zero Mean Curvature Surfaces in the Simply
Isotropic 3-space

Abstract: Zero mean curvature surfaces in the simply isotropic 3-space $${\mathbb {I}}^3$$ naturally appear as intermediate geometry between geometry of minimal surfaces in $${\mathbb {E}}^3$$ and that of maximal surfaces in $${\mathbb {L}}^3$$ . In this paper, we investigate reflection principles for zero mean curvature surfaces in $${\mathbb {I}}^3$$ as with the above surfaces in $${\mathbb {E}}^3$$ and $${\mathbb {L}}^3$$ . In particular, we show a reflection principle for isotropic line segments on such zero mean curvature surfaces in $${\mathbb {I}}^3$$ , along which the induced metrics become singular.
PubDate: 2022-07-14

• Middle Bruck Loops and the Total Multiplication Group

Abstract: Let Q be a loop. The mappings $$x\mapsto ax$$ , $$x\mapsto xa$$ and $$x\mapsto a/x$$ are denoted by $$L_a$$ , $$R_a$$ and $$D_a$$ , respectively. The loop is said to be middle Bruck if for all $$a,b \in Q$$ there exists $$c\in Q$$ such that $$D_aD_bD_a = D_c$$ . The right inverse of Q is the loop with operation $$x/(y\backslash 1)$$ . It is proved that Q is middle Bruck if and only if the right inverse of Q is left Bruck (i.e., a left Bol loop in which $$(xy)^{-1}= x^{-1}y^{-1}$$ ). Middle Bruck loops are characterized in group theoretic language as transversals T to $$H\le G$$ such that $$\langle T \rangle = G$$ , $$T^G =T$$ and $$t^2=1$$ for each $$t\in T$$ . Other results include the fact that if Q is a finite loop, then the total multiplication group $$\langle L_a,R_a,D_a; a\in Q\rangle$$ is nilpotent if and only if Q is a centrally nilpotent 2-loop, and the fact that total multiplication groups of paratopic loops are isomorphic.
PubDate: 2022-07-13

• Generalized Distributions and Jacobi-Dunkl Approximations

Abstract: In this paper, we generalize some known results for the discrete Fourier analysis to the bounded Jacobi-Dunkl case. We define Jacobi-Dunkl distributions, then we give sufficient condition for the normal convergence of the Jacobi-Dunkl series. Finally, we state a Titchmarsh type theorem.
PubDate: 2022-07-12

• An Analytic Representation of the Second Symmetric Standard Elliptic
Integral in Terms of Elementary Functions

Abstract: We derive new convergent expansions of the symmetric standard elliptic integral $$R_D(x,y,z)$$ , for $$x, y,z\in {\mathbb {C}}{\setminus }(-\infty ,0]$$ , in terms of elementary functions. The expansions hold uniformly for large and small values of one of the three variables x, y or z (with the other two fixed). We proceed by considering a more general parametric integral from which $$R_D(x,y,z)$$ is a particular case. It turns out that this parametric integral is an integral representation of the Appell function $$F_1(a;b,c;a+1;x,y)$$ . Therefore, as a byproduct, we deduce convergent expansions of $$F_1(a;b,c;a+1;x,y)$$ . We also compute error bounds at any order of the approximation. Some numerical examples show the accuracy of the expansions and their uniform features.
PubDate: 2022-07-09

• A Minimal Maslov Number Condition for Displaceability in Certain Weakly
Exact Symplectic Manifolds

Abstract: We present a proof of a result which gives an upper bound for the minimal Maslov number of a displaceable n-dimensional Lagrangian submanifold in a weakly exact symplectic manifold with minimal Chern number at least n. The proof utilizes a result on the Conley-Zehnder index of a periodic orbit of the flow of a specifically constructed Floer Hamiltonian and an index relation.
PubDate: 2022-07-09

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