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  Subjects -> MATHEMATICS (Total: 889 journals)
    - APPLIED MATHEMATICS (73 journals)
    - GEOMETRY AND TOPOLOGY (20 journals)
    - MATHEMATICS (659 journals)
    - MATHEMATICS (GENERAL) (42 journals)
    - NUMERICAL ANALYSIS (19 journals)
    - PROBABILITIES AND MATH STATISTICS (76 journals)

MATHEMATICS (659 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: 3)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 8)
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     Full-text available via subscription   (Followers: 25)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 11)
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: 8)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 3)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15)
Advances in Decision Sciences     Open Access   (Followers: 5)
Advances in Difference Equations     Open Access   (Followers: 2)
Advances in Fixed Point Theory     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 2)
Advances in Materials Sciences     Open Access   (Followers: 16)
Advances in Mathematical Physics     Open Access   (Followers: 5)
Advances in Mathematics     Full-text available via subscription   (Followers: 10)
Advances in Numerical Analysis     Open Access   (Followers: 4)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 6)
Advances in Pure Mathematics     Open Access   (Followers: 4)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 5)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 4)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 9)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access  
Algebra and Logic     Hybrid Journal   (Followers: 4)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Full-text available via subscription   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Biostatistics     Open Access   (Followers: 9)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 5)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 7)
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access   (Followers: 1)
Analysis     Hybrid Journal   (Followers: 2)
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 3)
Analysis Mathematica     Full-text available via subscription  
Annales Mathematicae Silesianae     Open Access  
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales UMCS, 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: 11)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 6)
Annals of Mathematics     Full-text available via subscription  
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 7)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
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  
Annuaire du Collège de France     Open Access   (Followers: 5)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 2)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Mathematics     Open Access   (Followers: 3)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 4)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 1)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 1)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 3)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 1)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites : The Journal of Space Research Centre of Polish Academy of Sciences     Open Access   (Followers: 20)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Journal of Current Engineering & Maths     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: 2)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 1)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Baltic International Yearbook of Cognition, Logic and Communication     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 1)
BIT Numerical Mathematics     Hybrid Journal  
BoEM - Boletim online de Educação Matemática     Open Access  
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: 1)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 21)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 9)
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: 1)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal  
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
ChemSusChem     Hybrid Journal   (Followers: 7)
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  
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Full-text available via subscription   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Commentarii Mathematici Helvetici     Hybrid Journal   (Followers: 1)
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 1)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 2)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Complexus     Full-text available via subscription  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Comptes Rendus Mathematique     Full-text available via subscription   (Followers: 1)
Computational and Applied Mathematics     Hybrid Journal   (Followers: 2)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 4)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 14)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 11)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 28)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 2)
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 1)
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Mathematics     Hybrid Journal  
Duke Mathematical Journal     Full-text available via subscription   (Followers: 1)
Eco Matemático     Open Access  
Edited Series on Advances in Nonlinear Science and Complexity     Full-text available via subscription  
Electronic Journal of Graph Theory and Applications     Open Access   (Followers: 2)
Electronic Notes in Discrete Mathematics     Full-text available via subscription   (Followers: 2)
Elemente der Mathematik     Full-text available via subscription   (Followers: 3)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Ensino da Matemática em Debate     Open Access  
Entropy     Open Access   (Followers: 5)
ESAIM: Control Optimisation and Calculus of Variations     Full-text available via subscription   (Followers: 1)
European Journal of Combinatorics     Full-text available via subscription   (Followers: 5)
European Journal of Mathematics     Hybrid Journal   (Followers: 1)
European Scientific Journal     Open Access   (Followers: 2)
Experimental Mathematics     Hybrid Journal   (Followers: 4)
Expositiones Mathematicae     Hybrid Journal   (Followers: 2)
Facta Universitatis, Series : Mathematics and Informatics     Open Access  
Fasciculi Mathematici     Open Access  
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 4)

        1 2 3 4 | Last

Journal Cover Annali di Matematica Pura ed Applicata
  [SJR: 1.167]   [H-I: 26]   [1 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1618-1891 - ISSN (Online) 0373-3114
   Published by Springer-Verlag Homepage  [2352 journals]
  • The infinitesimally bendable Euclidean hypersurfaces
    • Authors: M. Dajczer; Th. Vlachos
      Pages: 1961 - 1979
      Abstract: The main purpose of this paper is to complete the work initiated by Sbrana in 1909 giving a complete local classification of the nonflat infinitesimally bendable hypersurfaces in Euclidean space.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0641-8
      Issue No: Vol. 196, No. 6 (2017)
       
  • Solution to the first Cousin problem for vector-valued quasianalytic
           functions
    • Authors: Andreas Debrouwere; Jasson Vindas
      Pages: 1983 - 2003
      Abstract: We study spaces of vector-valued quasianalytic functions and solve the first Cousin problem in these spaces.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0649-0
      Issue No: Vol. 196, No. 6 (2017)
       
  • A subset of Caffarelli–Kohn–Nirenberg inequalities in the hyperbolic
           space $${{\mathbb {H}}}^N$$ H N
    • Authors: Kunnath Sandeep; Cyril Tintarev
      Pages: 2005 - 2021
      Abstract: We prove a subset of inequalities of Caffarelli–Kohn–Nirenberg type in the hyperbolic space \({{\mathbb {H}}^N}, N\ge 2\) , based on invariance with respect to a certain nonlinear scaling group, and study existence of corresponding minimizers. Earlier results concerning the Moser–Trudinger inequality are now interpreted in terms of CKN inequalities on the Poincaré disk.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0650-7
      Issue No: Vol. 196, No. 6 (2017)
       
  • Multiple standing waves for the nonlinear Helmholtz equation concentrating
           in the high frequency limit
    • Authors: Gilles Evéquoz
      Pages: 2023 - 2042
      Abstract: This paper studies for large frequency number \(k>0\) the existence and multiplicity of solutions of the semilinear problem $$\begin{aligned} -\varDelta u -k^2 u=Q(x) u ^{p-2}u\quad \text { in }\mathbb {R}^N, \quad N\ge 2. \end{aligned}$$ The exponent p is subcritical, and the coefficient Q is continuous, nonnegative and satisfies the condition $$\begin{aligned} \limsup _{ x \rightarrow \infty }Q(x)<\sup _{x\in \mathbb {R}^N}Q(x). \end{aligned}$$ In the limit \(k\rightarrow \infty \) , sequences of solutions associated with ground states of a dual equation are shown to concentrate, after rescaling, at global maximum points of the function Q.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0651-6
      Issue No: Vol. 196, No. 6 (2017)
       
  • Multiplicity of positive solutions for a class of fractional Schrödinger
           equations via penalization method
    • Authors: Vincenzo Ambrosio
      Pages: 2043 - 2062
      Abstract: By using the penalization method and the Ljusternik–Schnirelmann theory, we investigate the multiplicity of positive solutions of the following fractional Schrödinger equation $$\begin{aligned} \varepsilon ^{2s}(-\Delta )^{s} u + V(x)u = f(u)\quad \text{ in } {\mathbb {R}}^{N} \end{aligned}$$ where \(\varepsilon >0\) is a parameter, \(s\in (0, 1)\) , \(N>2s\) , \((-\Delta )^{s}\) is the fractional Laplacian, V is a positive continuous potential with local minimum, and f is a superlinear function with subcritical growth. We also obtain a multiplicity result when \(f(u)= u ^{q-2}u+\lambda u ^{r-2}u\) with \(2<q<2^{*}_{s}\le r\) and \(\lambda >0\) , by combining a truncation argument and a Moser-type iteration.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0652-5
      Issue No: Vol. 196, No. 6 (2017)
       
  • Conformal minimal surfaces immersed into $${\mathbb {H}}P^{n}$$ H P n
    • Authors: Xiaodong Chen; Xiaoxiang Jiao
      Pages: 2063 - 2076
      Abstract: In this paper, we want to construct conformal minimal surfaces and conformal minimal two-spheres in \({\mathbb {H}}P^{n}\) by the twistor map \(\pi : {\mathbb {C}}P^{2n+1} \rightarrow {\mathbb {H}}P^{n}\) . The construction is due to Eells and Wood’s conclusion about the composition of a horizontal harmonic map in 1983. Firstly, we give a characterization of horizontal holomorphic surfaces in \({\mathbb {C}}P^{5}\) . Under this characterization, we construct eight families of conformal minimal surfaces in \({\mathbb {H}}P^{2}\) . Then, we study horizontal Veronese sequences in \({\mathbb {C}}P^{4}\) and \({\mathbb {C}}P^{5}\) , and we transform the construction into solving a quadratic equation. Based on this, we get some examples of conformal minimal two-spheres in \({\mathbb {H}}P^{2}\) with constant curvature \(\frac{4}{5}\) and \(\frac{4}{13}\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0653-4
      Issue No: Vol. 196, No. 6 (2017)
       
  • On the cone of strong Kähler with torsion metrics
    • Authors: Michele Maschio
      Pages: 2077 - 2089
      Abstract: This paper examines special metrics on compact complex manifolds, and it is notably focused on the notion of super strong Kähler with torsion metric. This condition is related to the strong Kähler with torsion one in the same manner as the strongly Gauduchon condition is related to the Gauduchon one. Moreover, we provide sufficient and necessary conditions so that every strong Kähler with torsion metric on a compact complex manifold is in fact super strong Kähler with torsion. We prove that these conditions are verified on compact complex manifolds satisfying \(\partial \overline{\partial }\) -lemma but not on 6-dimensional compact complex nilmanifolds.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0654-3
      Issue No: Vol. 196, No. 6 (2017)
       
  • A regularity class for the roots of nonnegative functions
    • Authors: Kolyan Ray; Johannes Schmidt-Hieber
      Pages: 2091 - 2103
      Abstract: We investigate the regularity of the positive roots of a nonnegative function of one-variable. A modified Hölder space \(\mathcal {F}^\beta \) is introduced such that if \(f\in \mathcal {F}^\beta \) then \(f^\alpha \in C^{\alpha \beta }\) . This provides sufficient conditions to overcome the usual limitation in the square root case ( \(\alpha = 1/2\) ) for Hölder functions that \(f^{1/2}\) need be no more than \(C^1\) in general. We also derive bounds on the wavelet coefficients of \(f^\alpha \) , which provide a finer understanding of its local regularity.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0655-2
      Issue No: Vol. 196, No. 6 (2017)
       
  • Existence of martingale solutions and the incompressible limit for
           stochastic compressible flows on the whole space
    • Authors: Prince Romeo Mensah
      Pages: 2105 - 2133
      Abstract: We give an existence and asymptotic result for the so-called finite energy weak martingale solution of the compressible isentropic Navier–Stokes system driven by some random force in the whole spatial region. In particular, given a general nonlinear multiplicative noise, we establish the convergence to the incompressible system as the Mach number, representing the ratio between the average flow velocity and the speed of sound, approaches zero.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0656-1
      Issue No: Vol. 196, No. 6 (2017)
       
  • Characterizing spheres and Euclidean spaces by conformal vector fields
    • Authors: Sharief Deshmukh
      Pages: 2135 - 2145
      Abstract: It is well known that the Euclidean space \( (R^{n},\left\langle ,\right\rangle )\) , the n-sphere \(S^{n}(c)\) of constant curvature c are examples of spaces admitting many conformal vector fields, and therefore conformal vector fields are used in obtaining characterizations of these spaces. In this paper, we use nontrivial conformal vector fields on a compact and connected Riemannian manifold to characterize the sphere \(S^{n}(c)\) . Also, we use a nontrivial conformal vector field on a complete and connected Riemannian manifold and find characterizations for a Euclidean space \((R^{n},\left\langle ,\right\rangle )\) and the sphere \(S^{n}(c)\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0657-0
      Issue No: Vol. 196, No. 6 (2017)
       
  • Partial regularity results for non-autonomous functionals with $$\varPhi
           $$ Φ -growth conditions
    • Authors: Flavia Giannetti; Antonia Passarelli di Napoli; Atsushi Tachikawa
      Pages: 2147 - 2165
      Abstract: We prove the partial Hölder continuity of the local minimizers of non-autonomous integral functionals of the type $$\begin{aligned} \int _\varOmega \varPhi \left( \big ( A^{\alpha \beta }_{ij}(x,u) D_iu^\alpha D_ju^\beta \big )^{1/2}\right) \mathrm{d}x, \end{aligned}$$ where \(\varPhi \) is an Orlicz function satisfying both the \(\varDelta _2\) and \(\nabla _2\) conditions and the function \(A(x,s) = \big (A^{\alpha \beta }_{ij}(x,s)\big )\) is uniformly elliptic, bounded and continuous. Assuming in addition that the function \(A(x,s) = \big (A^{\alpha \beta }_{ij}(x,s)\big )\) is Hölder continuous, we prove the partial Hölder continuity also of the gradient of the local minimizers.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0658-z
      Issue No: Vol. 196, No. 6 (2017)
       
  • On a conjecture of De Giorgi related to homogenization
    • Authors: Aram L. Karakhanyan; Henrik Shahgholian
      Pages: 2167 - 2183
      Abstract: For a periodic vector field F, let \(X^\varepsilon \) solve the dynamical system $$\begin{aligned} \frac{{\hbox {d}}{\hbox {X}}^{\varepsilon }}{{\hbox {d}}t} = {{F}}\left( \frac{{X}^{\varepsilon }}{\varepsilon }\right) . \end{aligned}$$ In (Set Valued Anal 2(1–2):175–182, 1994) Ennio De Giorgi enquiers whether from the existence of the limit \( X^0(t):=\lim \nolimits _{\varepsilon \rightarrow 0} X^\varepsilon (t)\) one can conclude that \( \frac{{\hbox {d}} X^0}{{\hbox {d}}t}= {\hbox {constant}}\) . Our main result settles this conjecture under fairly general assumptions on F, which in some cases may also depend on t-variable. Once the above problem is solved, one can apply the result to the corresponding transport equation, in a standard way. This is also touched upon in the text to follow.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0659-y
      Issue No: Vol. 196, No. 6 (2017)
       
  • Stability with respect to actions of real reductive Lie groups
    • Authors: Leonardo Biliotti; Michela Zedda
      Pages: 2185 - 2211
      Abstract: We give a systematic treatment of the stability theory for action of a real reductive Lie group G on a topological space. More precisely, we introduce an abstract setting for actions of noncompact real reductive Lie groups on topological spaces that admit functions similar to the Kempf–Ness function. The point of this construction is that one can characterize stability, semi-stability and polystability of a point by numerical criteria, that is in terms of a function called maximal weight. We apply this setting to the actions of a real noncompact reductive Lie group G on a real compact submanifold M of a Kähler manifold Z and to the action of G on measures of M.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0660-5
      Issue No: Vol. 196, No. 6 (2017)
       
  • Classification of homogeneous minimal immersions from $$S^2$$ S 2 to
           $${\mathbb {H}}P^n$$ H P n
    • Authors: Jie Fei; Ling He
      Pages: 2213 - 2237
      Abstract: In this paper we determine all homogeneous minimal immersions of 2-spheres in quaternionic projective spaces \({\mathbb {H}}P^n\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0661-4
      Issue No: Vol. 196, No. 6 (2017)
       
  • Convolvability and regularization of distributions
    • Authors: C. Bargetz; E. A. Nigsch; N. Ortner
      Pages: 2239 - 2251
      Abstract: We apply L. Schwartz’ theory of vector-valued distributions in order to simplify, unify and generalize statements about convolvability of distributions, their regularization properties and topological properties of sets of distributions. The proofs rely on propositions on the multiplication of vector-valued distributions and on the characterization of the spaces \(\mathcal {O}_{M}(E,F)\) and \(\mathcal {O}_{C}'(E,F)\) of multipliers and convolutors for distribution spaces E and F.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0662-3
      Issue No: Vol. 196, No. 6 (2017)
       
  • Two-dimensionality of gravity water flows governed by the equatorial f
           -plane approximation
    • Authors: Calin Iulian Martin
      Pages: 2253 - 2260
      Abstract: We show that gravity wave trains governed by the equatorial f-plane approximation propagate at the free surface of a rotational water flow of constant vorticity vector \((\Omega _1, \Omega _2, \Omega _3)\) over a flat bed only if the flow is two-dimensional. Owing to the presence of Coriolis effects, our result is also true even if the vorticity vector vanishes. This represents a striking difference when compared with the cases without geophysical effects discussed in Constantin (Europhys Lett 86:29001, 2009, Eur J Mech 30:12–16; 2011) and Martin (J Math Fluid Mech 2016. doi:10.1007/s00021-016-0306-1), where the conclusion about the two-dimensionality of the flow was possible under the assumption of constant nonvanishing vorticity vector. Another upshot is that the only nonzero component of the vorticity that may not vanish is \(\Omega _2\) , that is, the one pointing in the horizontal direction orthogonal to the direction of wave propagation.
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0663-2
      Issue No: Vol. 196, No. 6 (2017)
       
  • Density of bounded maps in Sobolev spaces into complete manifolds
    • Authors: Pierre Bousquet; Augusto C. Ponce; Jean Van Schaftingen
      Pages: 2261 - 2301
      Abstract: Given a complete noncompact Riemannian manifold \(N^n\) , we investigate whether the set of bounded Sobolev maps \((W^{1, p} \cap L^\infty ) (Q^m; N^n)\) on the cube \(Q^{m}\) is strongly dense in the Sobolev space \(W^{1, p} (Q^m; N^n)\) for \(1 \le p \le m\) . The density always holds when p is not an integer. When p is an integer, the density can fail, and we prove that a quantitative trimming property is equivalent with the density. This new condition is ensured, for example, by a uniform Lipschitz geometry of \(N^{n}\) . As a by-product, we give necessary and sufficient conditions for the strong density of the set of smooth maps \(C^\infty (\overline{Q^m}; N^n)\) in \(W^{1, p} (Q^m; N^n)\) .
      PubDate: 2017-12-01
      DOI: 10.1007/s10231-017-0664-1
      Issue No: Vol. 196, No. 6 (2017)
       
  • Global continuation of the eigenvalues of a perturbed linear operator
    • Authors: Pierluigi Benevieri; Alessandro Calamai; Massimo Furi; Maria Patrizia Pera
      Abstract: Let E, F be real Banach spaces and S the unit sphere of E. We study a nonlinear eigenvalue problem of the type \(Lx + \varepsilon N(x) = \lambda Cx\) , where \(\varepsilon ,\lambda \) are real parameters, \(L:E \rightarrow F\) is a Fredholm linear operator of index zero, \(C:E \rightarrow F\) is a compact linear operator, and \(N:S \rightarrow F\) is a compact map. Given a solution \((x,\varepsilon ,\lambda ) \in S \times \mathbb {R}\times \mathbb {R}\) of this problem, we say that the first element x of the triple is a unit eigenvector corresponding to the eigenpair  \((\varepsilon ,\lambda )\) . Assuming that \(\lambda _0 \in \mathbb {R}\) is such that the kernel of \(L -\lambda _0C\) is odd dimensional and a natural transversality condition between the operators \(L -\lambda _0C\) and C is satisfied, we prove that, in the set of all the eigenpairs, the connected component containing \((0,\lambda _0)\) is either unbounded or meets an eigenpair \((0,\lambda _1)\) , with \(\lambda _1 \not = \lambda _0\) . Our approach is topological and based on the classical Leray–Schauder degree.
      PubDate: 2017-11-11
      DOI: 10.1007/s10231-017-0717-5
       
  • On the local boundedness of generalized minimizers of variational problems
           with linear growth
    • Authors: M. Bildhauer; M. Fuchs; J. Müller; X. Zhong
      Abstract: We prove local boundedness of generalized solutions to a large class of variational problems of linear growth including boundary value problems of minimal surface type and models from image analysis related to the procedure of TV regularization occurring in connection with the denoising of images, which might even be coupled with an inpainting process. Our main argument relies on a Moser-type iteration procedure.
      PubDate: 2017-11-10
      DOI: 10.1007/s10231-017-0716-6
       
  • Correction to: The infinitesimally bendable Euclidean hypersurfaces
    • Authors: M. Dajczer; Th. Vlachos
      Abstract: All the results of the paper remain true as stated but there is a serious gap in the proof of Theorem 13. Equations (26) and (27) need to be corrected.
      PubDate: 2017-10-13
      DOI: 10.1007/s10231-017-0700-1
       
 
 
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