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 Subjects -> MATHEMATICS (Total: 1041 journals)     - APPLIED MATHEMATICS (84 journals)    - GEOMETRY AND TOPOLOGY (23 journals)    - MATHEMATICS (770 journals)    - MATHEMATICS (GENERAL) (43 journals)    - NUMERICAL ANALYSIS (23 journals)    - PROBABILITIES AND MATH STATISTICS (98 journals) MATHEMATICS (770 journals)            First | 1 2 3 4
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108) Order ORiON P-Adic Numbers, Ultrametric Analysis, and Applications PAMM : Proceedings in Applied Mathematics and Mechanics       (Followers: 1) Parallel Processing Letters       (Followers: 3) Peking Mathematical Journal Periodica Mathematica Hungarica       (Followers: 1) Perspectivas da Educação Matemática Petroleum Science       (Followers: 1) Philosophia Mathematica       (Followers: 1) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences       (Followers: 6) PNA. 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Similar Journals
 Proceedings of the Edinburgh Mathematical SocietyJournal Prestige (SJR): 0.695 Citation Impact (citeScore): 1Number of Followers: 0      Hybrid journal (It can contain Open Access articles) ISSN (Print) 0013-0915 - ISSN (Online) 1464-3839 Published by Cambridge University Press  [387 journals]
• PEM series 2 volume 62 issue 4 Cover and Front matter
• PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000348
Issue No: Vol. 62, No. 4 (2019)

• PEM series 2 volume 62 issue 4 Cover and Back matter
• PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S001309151900035X
Issue No: Vol. 62, No. 4 (2019)

• Biholomorphic Mappings on Banach Spaces
• Authors: H. Carrión; P. Galindo, M. L. Lourenço
Pages: 913 - 924
Abstract: We present an infinite-dimensional version of Cartan's theorem concerning the existence of a holomorphic inverse of a given holomorphic self-map of a bounded convex open subset of a dual Banach space. No separability is assumed, contrary to previous analogous results. The main assumption is that the derivative operator is power bounded, and which we, in turn, show to be diagonalizable in some cases, like the separable Hilbert space.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091518000883
Issue No: Vol. 62, No. 4 (2019)

• Grothendieck Ring of Varieties with Actions of Finite Groups
• Authors: S.M. Gusein-Zade; I. Luengo, A. Melle-Hernández
Pages: 925 - 948
Abstract: We define a Grothendieck ring of varieties with actions of finite groups and show that the orbifold Euler characteristic and the Euler characteristics of higher orders can be defined as homomorphisms from this ring to the ring of integers. We describe two natural λ-structures on the ring and the corresponding power structures over it and show that one of these power structures is effective. We define a Grothendieck ring of varieties with equivariant vector bundles and show that the generalized (‘motivic’) Euler characteristics of higher orders can be defined as homomorphisms from this ring to the Grothendieck ring of varieties extended by powers of the class of the complex affine line. We give an analogue of the Macdonald type formula for the generating series of the generalized higher-order Euler characteristics of wreath products.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S001309151900004X
Issue No: Vol. 62, No. 4 (2019)

• Higher Summability and Discrete Weighted Muckenhoupt and Gehring Type
Inequalities
• Authors: S. H. Saker; I. Kubiaczyk
Pages: 949 - 973
Abstract: In this paper, we prove some reverse discrete inequalities with weights of Muckenhoupt and Gehring types and use them to prove some higher summability theorems on a higher weighted space $l_{w}^{p}({\open N})$ form summability on the weighted space $l_{w}^{q}({\open N})$ when p>q. The proofs are obtained by employing new discrete weighted Hardy's type inequalities and their converses for non-increasing sequences, which, for completeness, we prove in our special setting. To the best of the authors' knowledge, these higher summability results have not been considered before. Some numerical results will be given for illustration.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000014
Issue No: Vol. 62, No. 4 (2019)

• An Elementary Proof of Bevan's Theorem on the Growth of Grid Classes of
Permutations
• Authors: Michael Albert; Vincent Vatter
Pages: 975 - 984
Abstract: Bevan established that the growth rate of a monotone grid class of permutations is equal to the square of the spectral radius of a related bipartite graph. We give an elementary and self-contained proof of a generalization of this result using only Stirling's formula, the method of Lagrange multipliers, and the singular value decomposition of matrices. Our proof relies on showing that the maximum over the space of n × n matrices with non-negative entries summing to one of a certain function of those entries, parametrized by the entries of another matrix Γ of non-negative real numbers, is equal to the square of the largest singular value of Γ and that the maximizing point can be expressed as a Hadamard product of Γ with the tensor product of singular vectors for its greatest singular value.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000026
Issue No: Vol. 62, No. 4 (2019)

• Asymptotic Behaviour of the Energy Integral of a Two-Parameter
Homogenization Problem with Nonlinear Periodic Robin Boundary Conditions
• Authors: Massimo Lanza de Cristoforis; Paolo Musolino
Pages: 985 - 1016
Abstract: We consider a nonlinear Robin problem for the Poisson equation in an unbounded periodically perforated domain. The domain has a periodic structure, and the size of each cell is determined by a positive parameter δ. The relative size of each periodic perforation is determined by a positive parameter ε. Under suitable assumptions, such a problem admits a family of solutions which depends on ε and δ. We analyse the behaviour the energy integral of such a family as (ε, δ) tends to (0, 0) by an approach that represents an alternative to asymptotic expansions and classical homogenization theory.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091518000858
Issue No: Vol. 62, No. 4 (2019)

• Muckenhoupt Class Weight Decomposition and BMO Distance to Bounded
Functions
• Authors: Morten Nielsen; Hrvoje Šikić
Pages: 1017 - 1031
Abstract: We study the connection between the Muckenhoupt Ap weights and bounded mean oscillation (BMO) for general bases for ℝd. New classes of bases are introduced that allow for several deep results on the Muckenhoupt weights–BMO connection to hold in a very general form. The John–Nirenberg type inequality and its consequences are valid for the new class of Calderón–Zygmund bases which includes cubes in ℝd, but also the basis of rectangles in ℝd. Of particular interest to us is the Garnett–Jones theorem on the BMO distance, which is valid for cubes. We prove that the theorem is equivalent to the newly introduced A2-decomposition property of bases. Several sufficient conditions for the theorem to hold are analysed as well. However, the question whether the theorem fully holds for rectangles remains open.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000038
Issue No: Vol. 62, No. 4 (2019)

• An ideal-theoretic approach to Keller maps
• Authors: Cleto B. Miranda-Neto
Pages: 1033 - 1044
Abstract: A self-map F of an affine space ${\bf A}_k^n$ over a field k is said to be a Keller map if F is given by polynomials F1, …, Fn ∈ k[X1, …, Xn] whose Jacobian determinant lies in $k\setminus \{0\}$ . We consider char(k) = 0 and assume, as we may, that the Fis vanish at the origin. In this note, we prove that if F is Keller then its base ideal IF = 〈F1, …, Fn〉 is radical (a finite intersection of maximal ideals in this case). We then conjecture that IF = 〈X1, …, Xn〉, which we show to be equivalent to the classical Jacobian Conjecture. In addition, among other remarks, we observe that every complex Keller map admits a well-defined multidimensional global residue function.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000099
Issue No: Vol. 62, No. 4 (2019)

• Notes on linkage of modules
Pages: 1045 - 1062
Abstract: Let R be a Cohen–Macaulay local ring. It is shown that under some mild conditions, the Cohen–Macaulay property is preserved under linkage. We also study the connection of the (Sn) locus of a horizontally linked module and the attached primes of certain local cohomology modules of its linked module.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000117
Issue No: Vol. 62, No. 4 (2019)

• Topological rigidity for closed hypersurfaces of elliptic space forms
• Authors: Eduardo Rosinato Longa; Jaime Bruck Ripoll
Pages: 1063 - 1072
Abstract: We prove a topological rigidity theorem for closed hypersurfaces of the Euclidean sphere and of an elliptic space form. It asserts that, under a lower bound hypothesis on the absolute value of the principal curvatures, the hypersurface is diffeomorphic to a sphere or to a quotient of a sphere by a group action. We also prove another topological rigidity result for hypersurfaces of the sphere that involves the spherical image of its usual Gauss map.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000075
Issue No: Vol. 62, No. 4 (2019)

• A multiplier inclusion theorem on product domains
• Authors: Odysseas Bakas
Pages: 1073 - 1088
Abstract: In this note it is shown that the class of all multipliers from the d-parameter Hardy space $H_{{\rm prod}}^1 ({\open T}^d)$ to L2 (ð•‹d) is properly contained in the class of all multipliers from L logd/2L (ð•‹d) to L2(ð•‹d).
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000087
Issue No: Vol. 62, No. 4 (2019)

• Actions of skew braces and set-theoretic solutions of the reflection
equation
• Authors: K. De Commer
Pages: 1089 - 1113
Abstract: A skew brace, as introduced by L. Guarnieri and L. Vendramin, is a set with two group structures interacting in a particular way. When one of the group structures is abelian, one gets back the notion of brace as introduced by W. Rump. Skew braces can be used to construct solutions of the quantum Yang–Baxter equation. In this article, we introduce a notion of action of a skew brace, and show how it leads to solutions of the closely associated reflection equation.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000129
Issue No: Vol. 62, No. 4 (2019)

• Toeplitz operators on Bergman spaces of polygonal domains
• Authors: Paula Mannersalo
Pages: 1115 - 1136
Abstract: We study the boundedness of Toeplitz operators with locally integrable symbols on Bergman spaces Ap(Ω), 1 < p < ∞, where Ω ⊂ ℂ is a bounded simply connected domain with polygonal boundary. We give sufficient conditions for the boundedness of generalized Toeplitz operators in terms of ‘averages’ of symbol over certain Cartesian squares. We use the Whitney decomposition of Ω in the proof. We also give examples of bounded Toeplitz operators on Ap(Ω) in the case where polygon Ω has such a large corner that the Bergman projection is unbounded.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000105
Issue No: Vol. 62, No. 4 (2019)

• Coprime subdegrees of twisted wreath permutation groups
• Authors: Alexander Y. Chua; Michael Giudici, Luke Morgan
Pages: 1137 - 1162
Abstract: Dolfi, Guralnick, Praeger and Spiga asked whether there exist infinitely many primitive groups of twisted wreath type with non-trivial coprime subdegrees. Here, we settle this question in the affirmative. We construct infinite families of primitive twisted wreath permutation groups with non-trivial coprime subdegrees. In particular, we define a primitive twisted wreath group G(m, q) constructed from the non-abelian simple group PSL(2, q) and a primitive permutation group of diagonal type with socle PSL(2, q)m, and determine many subdegrees for this group. A consequence is that we determine all values of m and q for which G(m, q) has non-trivial coprime subdegrees. In the case where m = 2 and $q\notin \{7,11,29\}$ , we obtain a full classification of all pairs of non-trivial coprime subdegrees.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000130
Issue No: Vol. 62, No. 4 (2019)

• On the Gibbs–Wilbraham Phenomenon for Sampling and Interpolatory
Series
• Authors: Keaton Hamm
Pages: 1163 - 1171
Abstract: We investigate the Gibbs–Wilbraham phenomenon for generalized sampling series, and related interpolation series arising from cardinal functions. We prove the existence of the overshoot characteristic of the phenomenon for certain cardinal functions, and characterize the existence of an overshoot for sampling series.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000166
Issue No: Vol. 62, No. 4 (2019)

• Point derivations and cohomologies of Lipschitz algebras
• Authors: Kazuhiro Kawamura
Pages: 1173 - 1187
Abstract: For a compact metric space (K, d), LipK denotes the Banach algebra of all complex-valued Lipschitz functions on (K, d). We show that the continuous Hochschild cohomology Hn(LipK, (LipK)*) and Hn(LipK, ℂe) are both infinite-dimensional vector spaces for each n ≥ 1 if the space K contains a certain infinite sequence which converges to a point e ∈ K. Here (LipK)* is the dual module of LipK and ℂe denotes the complex numbers with a LipK-bimodule structure defined by evaluations of LipK-functions at e. Examples of such metric spaces include all compact Riemannian manifolds, compact geodesic metric spaces and infinite compact subsets of ℝ. In particular, the (small) global homological dimension of LipK is infinite for every such space. Our proof uses the description of point derivations by Sherbert [‘The structure of ideals and point derivations in Banach algebras of Lipschitz functions’, Trans. Amer. Math. Soc.111 (1964), 240–272] and directly constructs non-trivial cocycles with the help of alternating cocycles of Johnson [‘Higher-dimensional weak amenability’, Studia Math.123 (1997), 117–134]. An alternating construction of cocycles on the basis of the idea of Kleshchev [‘Homological dimension of Banach algebras of smooth functions is equal to infinity’, Vest. Math. Mosk. Univ. Ser. 1. Mat. Mech.6 (1988), 57–60] is also discussed.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000142
Issue No: Vol. 62, No. 4 (2019)

• Relations and trails in lattices of projections in W*-algebras
• Authors: Edward Kissin
Pages: 1189 - 1215
Abstract: This paper concerns HH-relations in the lattices P(M) of all projections of W*-algebras M. If M is a finite algebra, all these relations are generated by trails in P(M). If M is an infinite countably decomposable factor, they are either generated by trails or associated with them.
PubDate: 2019-11-01T00:00:00.000Z
DOI: 10.1017/S0013091519000245
Issue No: Vol. 62, No. 4 (2019)

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