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 Subjects -> MATHEMATICS (Total: 886 journals)     - APPLIED MATHEMATICS (72 journals)    - GEOMETRY AND TOPOLOGY (20 journals)    - MATHEMATICS (656 journals)    - MATHEMATICS (GENERAL) (42 journals)    - NUMERICAL ANALYSIS (19 journals)    - PROBABILITIES AND MATH STATISTICS (77 journals) MATHEMATICS (656 journals)                  1 2 3 4 | Last
 Showing 1 - 200 of 538 Journals sorted alphabetically Abakós       (Followers: 3) Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg       (Followers: 3) Academic Voices : A Multidisciplinary Journal       (Followers: 2) Accounting Perspectives       (Followers: 8) ACM Transactions on Algorithms (TALG)       (Followers: 16) ACM Transactions on Computational Logic (TOCL)       (Followers: 4) ACM Transactions on Mathematical Software (TOMS)       (Followers: 6) ACS Applied Materials & Interfaces       (Followers: 22) Acta Applicandae Mathematicae       (Followers: 1) Acta Mathematica       (Followers: 11) Acta Mathematica Hungarica       (Followers: 2) Acta Mathematica Scientia       (Followers: 5) Acta Mathematica Sinica, English Series       (Followers: 5) Acta Mathematica Vietnamica Acta Mathematicae Applicatae Sinica, English Series Advanced Science Letters       (Followers: 7) Advances in Applied Clifford Algebras       (Followers: 3) Advances in Calculus of Variations       (Followers: 2) Advances in Catalysis       (Followers: 5) Advances in Complex Systems       (Followers: 7) Advances in Computational Mathematics       (Followers: 15) Advances in Decision Sciences       (Followers: 5) Advances in Difference Equations       (Followers: 1) Advances in Fixed Point Theory       (Followers: 5) Advances in Geosciences (ADGEO)       (Followers: 10) Advances in Linear Algebra & Matrix Theory       (Followers: 2) Advances in Materials Sciences       (Followers: 16) Advances in Mathematical Physics       (Followers: 5) Advances in Mathematics       (Followers: 10) Advances in Numerical Analysis       (Followers: 4) Advances in Operations Research       (Followers: 11) Advances in Porous Media       (Followers: 4) Advances in Pure and Applied Mathematics       (Followers: 6) Advances in Pure Mathematics       (Followers: 4) Advances in Science and Research (ASR)       (Followers: 6) Aequationes Mathematicae       (Followers: 2) African Journal of Educational Studies in Mathematics and Sciences       (Followers: 5) African Journal of Mathematics and Computer Science Research       (Followers: 4) Afrika Matematika       (Followers: 1) Air, Soil & Water Research       (Followers: 7) AKSIOMA Journal of Mathematics Education       (Followers: 1) Al-Jabar : Jurnal Pendidikan Matematika Algebra and Logic       (Followers: 4) Algebra Colloquium       (Followers: 4) Algebra Universalis       (Followers: 2) Algorithmic Operations Research       (Followers: 5) Algorithms       (Followers: 11) Algorithms Research       (Followers: 1) American Journal of Biostatistics       (Followers: 9) American Journal of Computational and Applied Mathematics       (Followers: 4) American Journal of Mathematical Analysis American Journal of Mathematics       (Followers: 7) American Journal of Operations Research       (Followers: 5) American Mathematical Monthly       (Followers: 6) An International Journal of Optimization and Control: Theories & Applications       (Followers: 7) Analele Universitatii Ovidius Constanta - Seria Matematica       (Followers: 1) Analysis       (Followers: 2) Analysis and Applications       (Followers: 1) Analysis and Mathematical Physics       (Followers: 3) Analysis Mathematica Annales Mathematicae Silesianae Annales mathématiques du Québec       (Followers: 4) Annales UMCS, Mathematica       (Followers: 1) Annales Universitatis Paedagogicae Cracoviensis. 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 Acta Mathematica Sinica, English Series   [SJR: 0.406]   [H-I: 30]   [5 followers]  Follow         Hybrid journal (It can contain Open Access articles)    ISSN (Print) 1439-8516 - ISSN (Online) 1439-7617    Published by Springer-Verlag  [2353 journals]
• Stationary Gromov–Witten invariants of projective spaces
• Authors: Paul Norbury
Pages: 1163 - 1183
Abstract: Abstract We represent stationary descendant Gromov–Witten invariants of projective space, up to explicit combinatorial factors, by polynomials. One application gives the asymptotic behaviour of the large degree behaviour of stationary descendant Gromov–Witten invariants in terms of intersection numbers over the moduli space of curves. We also show that primary Gromov–Witten invariants are “virtual” stationary descendants and hence the string and divisor equations can be understood purely in terms of stationary invariants.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-5314-4
Issue No: Vol. 33, No. 9 (2017)

• Non-low 2 -ness and computable Lipschitz reducibility
• Authors: Yun Fan
Pages: 1184 - 1192
Abstract: Abstract In this paper, we prove that if a c.e. Turing degree d is non-low2, then there are two left-c.e. reals β 0, β 1 in d, such that, if β 0 is wtt-reducible to a left-c.e. real α, then β 1 is not computable Lipschitz (cl-) reducible to α. As a corollary, d contains a left-c.e. real which is not cl-reducible to any complex (wtt-complete) left-c.e. real.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6585-5
Issue No: Vol. 33, No. 9 (2017)

• New algebraic structures from Hermitian one-matrix model
• Authors: Xiang Mao Ding; Yu Ping Li; Ling Xian Meng
Pages: 1193 - 1205
Abstract: Abstract Virasoro constraint is the operator algebra version of one-loop equation for a Hermitian one-matrix model, and it plays an important role in solving the model. We construct the realization of the Virasoro constraint from the Conformal Field Theory (CFT) method. From multi-loop equations of the one-matrix model, we get a more general constraint. It can be expressed in terms of the operator algebras, which is the Virasoro subalgebra with extra parameters. In this sense, we named as generalized Virasoro constraint. We enlarge this algebra with central extension, this is a new kind of algebra, and the usual Virasoro algebra is its subalgebra. And we give a bosonic realization of its subalgebra.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6268-2
Issue No: Vol. 33, No. 9 (2017)

• Energy scattering of a generalized Davey–Stewartson system in three
dimension
• Authors: Jing Lu; Xing Dong Tang
Pages: 1206 - 1224
Abstract: Abstract In this paper, we study the global scattering result of the solution for the generalized Davey–Stewartson system $$\left\{ {\begin{array}{*{20}{c}} {i{\partial _t}u + \Delta u = {{\left u \right }^2}u + u{v_{{x_1}}},\left( {t,x} \right) \in \mathbb{R} \times {\mathbb{R}^3},} \\ { - \Delta u = {{\left( {{{\left u \right }^2}} \right)}_{{x_1}}}.} \end{array}} \right.$$ The main difficulties are the failure of the interaction Morawetz estimate and the asymmetrical structure of nonlinearity (in particular, the nonlinearity is non-local). To compensate, we utilize the strategy derived from concentration-compactness idea, which was first introduced by Kenig and Merle [Invent. Math., 166, 645–675 (2006)].
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6301-5
Issue No: Vol. 33, No. 9 (2017)

• Additive preservers of Drazin invertible operators with bounded index
• Authors: Mourad Oudghiri; Khalid Souilah
Pages: 1225 - 1241
Abstract: Abstract Let B(X) be the algebra of all bounded linear operators on an infinite-dimensional complex or real Banach space X. Given an integer n ≥ 1, we show that an additive surjective map Φ on B(X) preserves Drazin invertible operators of index non-greater than n in both directions if and only if Φ is either of the form Φ(T) = αATA −1 or of the form Φ(T) = αBT *B −1 where α is a non-zero scalar, A: X → X and B: X* → X are two bounded invertible linear or conjugate linear operators.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6534-3
Issue No: Vol. 33, No. 9 (2017)

• Distortion theorems for normalized biholomorphic quasi-convex mappings
• Authors: Xiao Fei Zhang; Tai Shun Liu; Yong Hong Xie
Pages: 1242 - 1248
Abstract: Abstract In this paper, we will use the Schwarz lemma at the boundary to character the distortion theorems of determinant at the extreme points and distortion theorems of matrix on the complex tangent space at the extreme points for normalized locally biholomorphic quasi-convex mappings in the unit ball B n respectively.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6220-5
Issue No: Vol. 33, No. 9 (2017)

• Riemann–Hilbert-type boundary value problems on a half hexagon
• Authors: Mohamed Akel; Fatimah Alabbad
Pages: 1249 - 1266
Abstract: Abstract In this article we discuss the explicit solvability of both Schwarz boundary value problem and Riemann–Hilbert boundary value problem on a half hexagon in the complex plane. Schwarz-type and Pompeiu-type integrals are obtained. The boundary behavior of these operators is discussed. Finally, we investigate the Schwarz problem and the Riemann–Hilbert problem for inhomogeneous Cauchy–Riemann equations.
PubDate: 2017-09-01
DOI: 10.1007/s10114-016-6127-6
Issue No: Vol. 33, No. 9 (2017)

• On the number of irreducible characters in a 3-block with a minimal
nonabelian defect group
• Authors: Sheng Yang; Sheng Gao; Chong Bin Xu
Pages: 1267 - 1274
Abstract: Abstract Let B be a 3-block of a finite group G with a defect group D. In this paper, we are mainly concerned with the number of characters in a particular block, so we shall use Isaacs’ approach to block structure. We consider the block B of a group G as a union of two sets, namely a set of irreducible ordinary characters of G having cardinality k(B) and a set of irreducible Brauer characters of G having cardinality l(B). We calculate k(B) and l(B) provided that D is normal in G and $$D \cong \left\langle {x,y,z x^{3^n } = y^{3^m } = z^3 = \left[ {x,z} \right] = \left[ {y,z} \right] = 1,\left[ {x,y} \right] = z} \right\rangle \left( {n > m \geqslant 2} \right)$$ .
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-5792-4
Issue No: Vol. 33, No. 9 (2017)

• Picard type theorems concerning certain small functions
• Authors: Pai Yang; Lei Qiao
Pages: 1275 - 1286
Abstract: Abstract Let f(z) be a meromorphic function in the complex plane, whose zeros have multiplicity at least k + 1 (k ≥ 2). If sin z is a small function with respect to f(z), then f(k)(z) − P(z) sinz has infinitely many zeros in the complex plane, where P(z) is a nonzero polynomial of deg(P(z)) ≠ 1.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6137-z
Issue No: Vol. 33, No. 9 (2017)

• An extension of a simply inequality between von Neumann–Jordan and James
constants in Banach spaces
• Authors: Chang Sen Yang; Feng Hui Wang
Pages: 1287 - 1296
Abstract: Abstract For a non-trivial Banach space X, let J(X), C NJ(X), C NJ (p) (X) respectively stand for the James constant, the von Neumann–Jordan constant and the generalized von Neumann–Jordan constant recently inroduced by Cui et al. In this paper, we discuss the relation between the James and the generalized von Neumann–Jordan constants, and establish an inequality between them: C NJ (p) (X) ≤ J(X) with p ≥ 2, which covers the well-known inequality C NJ(X) ≤ J(X). We also introduce a new constant, from which we establish another inequality that extends a result of Alonso et al.
PubDate: 2017-09-01
DOI: 10.1007/s10114-017-6211-6
Issue No: Vol. 33, No. 9 (2017)

• Moderate deviations for marked Hawkes processes
• Authors: Youngsoo Seol
Pages: 1297 - 1304
Abstract: Abstract We consider a linear Hawkes process with random marks. Some limit theorems have been studied by Karabash and Zhu [Stoch. Models, 31, 433–451 (2015)]. In this paper, we obtain a moderate deviation principle for marked Hawkes processes.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6433-7
Issue No: Vol. 33, No. 10 (2017)

• Two acyclicizations of a complex and an explicit recollement
• Authors: Huan Huan Li
Pages: 1305 - 1320
Abstract: Abstract By assigning to each complex over a semi-simple ring two acyclicizations, we construct an explicit recollement for homotopy categories of a certain triangular matrix ring such that all the six triangle functors of the recollement preserve acyclic complexes.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6565-9
Issue No: Vol. 33, No. 10 (2017)

• Sewing homeomorphism and conformal invariants
• Authors: Tao Cheng; Hui Qiang Shi; Shanshuang Yang
Pages: 1321 - 1338
Abstract: Abstract This paper is devoted to the study of some fundamental properties of the sewing homeomorphism induced by a Jordan domain. In particular, using conformal invariants such as harmonic measure, extremal distance, and reduced extremal distance, we give several necessary and sufficient conditions for the sewing homeomorphism to be bi-Lipschitz or bi-Hölder. Furthermore, equivalent conditions for a Jordan curve to be a quasicircle are also obtained.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6481-z
Issue No: Vol. 33, No. 10 (2017)

• On a class of weak nonhomogeneous affine bi-frames for reducing subspaces
of L 2 (ℝ d )
• Authors: Jian Ping Zhang; Yun Zhang Li
Pages: 1339 - 1351
Abstract: Abstract For refinable function-based affine bi-frames, nonhomogeneous ones admit fast algorithms and have extension principles as homogeneous ones. But all extension principles are based on some restrictions on refinable functions. So it is natural to ask what are expected from general refinable functions. In this paper, we introduce the notion of weak nonhomogeneous affine bi-frame (WNABF). Under the setting of reducing subspaces of L 2(R d ), we characterize WNABFs and obtain a mixed oblique extension principle for WNABFs based on general refinable functions.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6445-3
Issue No: Vol. 33, No. 10 (2017)

• Weak solutions on Lorentzian 2-tori
• Authors: Liang Jin; Xiaojun Cui
Pages: 1352 - 1360
Abstract: Abstract In this paper, we classify the set of Lorentzian metrics on T2, analyse the topological structure of some subclasses and study whether a subclass could admit certain weak solutions to the eikonal equations.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6348-3
Issue No: Vol. 33, No. 10 (2017)

• Regular space-like hypersurfaces in S 1 m+1 with parallel para-Blaschke
tensors
• Authors: Xing Xiao Li; Hong Ru Song
Pages: 1361 - 1381
Abstract: Abstract In this paper, we give a complete conformal classification of the regular space-like hypersurfaces in the de Sitter Space S m+1 1 with parallel para-Blaschke tensors.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6208-1
Issue No: Vol. 33, No. 10 (2017)

• A Pohozaev identity for the fractional Hénon system
• Authors: Pei Ma; Feng Quan Li; Yan Li
Pages: 1382 - 1396
Abstract: Abstract In this paper, we study the Pohozaev identity associated with a H´enon–Lane–Emden system involving the fractional Laplacian: $$\left\{ {\begin{array}{*{20}{c}} {{{\left( { - \Delta } \right)}^s}u = {{\left x \right }^a}{v^p},}&{x \in \Omega ,} \\ {{{\left( { - \Delta } \right)}^s}u = {{\left x \right }^b}{v^q},}&{x \in \Omega ,} \\ {u = v = 0,}&{x \in {\mathbb{R}^n}\backslash \Omega ,} \end{array}} \right.$$ in a star-shaped and bounded domain Ω for s ∈ (0, 1). As an application of our identity, we deduce the nonexistence of positive solutions in the critical and supercritical cases.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6556-x
Issue No: Vol. 33, No. 10 (2017)

• Weighted oscillation and variation inequalities for singular integrals and
commutators satisfying Hörmander type conditions
• Authors: Jing Zhang; Huo Xiong Wu
Pages: 1397 - 1420
Abstract: Abstract This paper is devoted to investigating the weighted L p -mapping properties of oscillation and variation operators related to the families of singular integrals and their commutators in higher dimension. We establish the weighted type (p, p) estimates for 1 < p < ∞ and the weighted weak type (1, 1) estimate for the oscillation and variation operators of singular integrals with kernels satisfying certain Hörmander type conditions, which contain the Riesz transforms, singular integrals with more general homogeneous kernels satisfying the Lipschitz conditions and the classical Dini’s conditions as model examples. Meanwhile, we also obtain the weighted L p -boundeness for such operators associated to the family of commutators generated by the singular integrals above with BMO(Rd)-functions.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6379-9
Issue No: Vol. 33, No. 10 (2017)

• On the asymptotically PT −1 spaces
• Authors: Xin Luo; Ying Qing Xiao; Yue Ping Jiang
Pages: 1421 - 1430
Abstract: Abstract In this note, first, we show that the asymptotic subcone, the ultralimit, the completion of an asymptotically PT−1 space are still an asymptotically PT−1 space. Secondly, we consider two kinds of metric spaces, which have been considered by Ibragimov and Gromov, respectively. We show that they are asymptotically PT−1 spaces under particular conditions, which provide some concrete examples of asymptotically PT−1 spaces.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-5257-9
Issue No: Vol. 33, No. 10 (2017)

• Isometries and additive mapping on the unit spheres of normed spaces
• Authors: Rui Dong Wang; Xu Jian Huang
Pages: 1431 - 1442
Abstract: Abstract In this paper, we investigate isometric extension problem in general normed space. We prove that an isometry between spheres can be extended to a linear isometry between the spaces if and only if the natural positive homogeneous extension is additive on spheres. Moreover, this conclusion still holds provided that the additivity holds on a restricted domain of spheres.
PubDate: 2017-10-01
DOI: 10.1007/s10114-017-6589-1
Issue No: Vol. 33, No. 10 (2017)

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