Publicacions matemàtiques
Publicacions Matemàtiques (ISSN: 0214-1493 papel, 2014-4350 electrónico) es una revista que publica artículos de calidad de investigación de todos los campos de las matemáticas y, de tanto en cuanto, también actos de congresos. Esta revista comenzó en el año 1976 bajo el título de Publicacions de la Secció de Matemàtiques (ISSN: 0210-2978 papel, 2014-4369 electrónico). En el año 1988 se introdujo un nuevo formato y comité editorial que dieron lugar a la segunda etapa de esta revista.
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2016-12-19
06:29
7 p, 280.7 KB Right Engel elements of stability groups of general series in vector spaces / Wehrfritz, B. A. F. (Queen Mary University of London. School of Mathematical Sciences)
Let V be an arbitrary vector space over some division ring D, L a general series of subspaces of V covering all of V \ {0} and S the full stability subgroup of L in GL(V). We prove that always the set of bounded right Engel elements of S is equal to the w-th term of the upper central series of S and that the set of right Engel elements of S is frequently equal to the hypercentre of S.
2017 - 10.5565/PUBLMAT_61117_11
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 283-289 (Articles)  
2016-12-19
06:29
23 p, 391.9 KB Localization genus / Møller, Jesper M. (Matematisk Institut (Copenhaguen, Dinamarca)) ; Scherer, Jérôme (École Polytechnique fédérale de Lausanne (Suïssa))
Which spaces look like an n-sphere through the eyes of the n-th Postnikov section functor and the n-connected cover functor? The answer is what we call the Postnikov genus of the n-sphere. We dene in fact the notion of localization genus for any homotopical localization functor in the sense of Bouseld and Dror Farjoun. [...]
2017 - 10.5565/PUBLMAT_61117_10
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 259-281 (Articles)  
2016-12-19
06:29
20 p, 413.2 KB Continuity of solutions to space-varying pointwise linear elliptic equations / Bandara, Lashi (Chalmers University of Technology (Suècia))
We consider pointwise linear elliptic equations of the form Lα uα = ŋα on a smooth compact manifold where the operators Lα are in divergence form with real, bounded, measurable coefficients that vary in the space variableα. [...]
2017 - 10.5565/PUBLMAT_61117_09
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 239-258 (Articles)  
2016-12-19
06:29
26 p, 522.3 KB Blow-up solutions for some nonlinear elliptic equations involving a Finsler-Laplacian / Della Pietra, Francesco (Universitá degli studi di Napoli Federico II. Dipartimento di Matematica e Applicazioni "R. Caccioppoli") ; di Blasio, Giuseppina (Seconda Universitá degli studi di Napoli. Dipartimento di Matematica e Fisica)
2017 - 10.5565/PUBLMAT_61117_08
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 213-228 (Articles)  
2016-12-19
06:29
38 p, 552.6 KB Equigeneric and equisingular families of curves on surfaces / Dedieu, Thomas (Université Paul Sabatier (França). Institut de Mathématiques de Toulouse) ; Sernesi, E. (Universitá Roma Tre. Dipartimento di Matematica e Fisica)
We investigate the following question: let C be an integral curve contained in a smooth complex algebraic surface X; is it possible to deform C in X into a nodal curve while preserving its geometric genus? We armatively answer it in most cases when X is a Del Pezzo or Hirzebruch surface (this is due to Arbarello and Cornalba, Zariski, and Harris), and in some cases when X is a K3 surface. [...]
2017 - 10.5565/PUBLMAT_61117_07
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 175-212 (Articles)  
2016-12-19
06:29
21 p, 452.3 KB An example pertaining to the failure of the Besicovitch-Federer structure theorem in Hilbert space / De Pauw, Thierry (Institut de Mathématiques de Jussieu (París))
We give an example, in the innite dimensional separable Hilbert space, of a purely unrectiable Borel set with nite nonzero one dimensional Hausdor measure, whose projection is nonnegligible in a set of directions which is not Aronszajn null.
2017 - 10.5565/PUBLMAT_61117_06
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 153-173 (Articles)  
2016-12-19
06:29
17 p, 341.3 KB Low energy canonical immersions into hyperbolic manifolds and standard spheres / del Rio, Heberto (Barry University (Estats Units d'Amèrica). Department of Mathematics & Computer Sciences) ; Santos, Walcy (Universidade Federal do Rio de Janeiro (Brasil). Instituto de Matematica) ; Simanca, Santiago R. (University of Miami (Estats Units d'Amèrica). Department of Mathematics)
We consider critical points of the global L2-norm of the second fundamental form, and of the mean curvature vector of isometric immersions of compact Riemannian manifolds into a fixed background Riemannian manifold, as functionals over the space of deformations of the immersion. [...]
2017 - 10.5565/PUBLMAT_61117_05
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 135-151 (Articles)  
2016-12-19
06:29
30 p, 761.9 KB A formula for the Dubrovnik polynomial of rational knots / Caprau, Carmen (California State University (Estats Units d'Amèrica). Department of Mathematics) ; Urabe, Katherine (DataWORKS Educational Research (Estats Units d'Amèrica))
We provide a formula for the Dubrovnik polynomial of a rational knot in terms of the entries of the tuple associated with a braid-form diagram of the knot. Our calculations can be easily carried out using a computer algebra system.
2017 - 10.5565/PUBLMAT_61117_04
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 105-134 (Articles)  
2016-12-19
06:29
22 p, 394.5 KB A Marcinkiewicz integral type characterization of the Sobolev space / Hajlasz, Piotr (University of Pittsburgh (Estats Units d'Amèrica). Department of Mathematics) ; Liu, Zhuomin (Charles University (Txecoslovàquia). Department of Mathematical Analysis)
In this paper we present a new characterization of the Sobolev space W1,p , 1 < p < ∞ which is a higher dimensional version of a result of Waterman [32]. We also provide a new and simplified proof of a recent result of Alabern, Mateu, and Verdera [2]. [...]
2017 - 10.5565/PUBLMAT_61117_03
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 83-104 (Articles)  
2016-12-19
06:29
32 p, 460.2 KB Automorphisms groups of simplicial complexes of infinite type surfaces / Hernández Hernández, Jesús ; Váldez, Ferran (Universidad Nacional Autónoma de México. Centro de Ciencias Matemáticas)
Let S be an orientable surface of innite genus with a nite numberof boundary components. In this work we consider the curve complex C(S), the nonseparating curve complex N(S), and the Schmutz graph G(S) of S. [...]
2017 - 10.5565/PUBLMAT_61117_02
Publicacions matemàtiques, Vol. 61 Núm. 1 (2017) , p. 51-82 (Articles)