Publicacions matemàtiques

Publicacions matemàtiques Encontrados 14 registros  La búsqueda tardó 0.01 segundos. 
1.
21 p, 448.5 KB Convex foliations of degree 5 on the complex projective plane / Bedrouni, Samir (University Of Science And Technology Houari Boumediene) ; Marín Pérez, David (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
We show that, up to automorphisms of P2 C, there are fourteen homogeneous convex foliations of degree 5 on P2 C. We establish some properties of the Fermat foliation Fd 0 of degree d ≥ 2 and of the Hilbert modular foliation F5 H of degree 5. [...]
2021 - 10.5565/PUBLMAT6522101
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 409-429 (Articles)  
2.
27 p, 433.0 KB Generators and closed classes of groups / Flores, Rámon (Universidad de Sevilla. Departamento de Geometría y Topología) ; Rodríguez, Jose L. (Universidad de Almería. Departamento de Matemáticas)
We show that, in the category of groups, every singly-generated class which is closed under isomorphisms, direct limits, and extensions is also singly-generated under isomorphisms and direct limits, and in particular is co-reflective. [...]
2021 - 10.5565/PUBLMAT6522102
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 431-457 (Articles)  
3.
40 p, 548.1 KB Stickelberger series and Main Conjecture for function fields / Bandini, Andrea (Universit'a degli Studi di Pisa. Dipartimento di Matematica) ; Coscelli, Edoardo
Let F be a global function field of characteristic p with ring of integers A and let Φ be a Hayes module on the Hilbert class field HA of F. We prove an Iwasawa Main Conjecture for the Z∞p extension F/F generated by the p-power torsion of Φ (p a prime of A). [...]
2021 - 10.5565/PUBLMAT6522103
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 459-498 (Articles)  
4.
30 p, 394.0 KB Structure monoids of set-theoretic solutions of the Yang-Baxter equation / Cedó, Ferran (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Jespers, Eric (Vrije Universiteit Brussel. Department of Mathematics) ; Vermwimp, Charlotte (Vrije Universiteit Brussel. Department of Mathematics)
Given a set-theoretic solution (X, r) of the Yang-Baxter equation, we denote by M = M(X, r) the structure monoid and by A = A(X, r), respectively A0 = A0 (X, r), the left, respectively right, derived structure monoid of (X, r). [...]
2021 - 10.5565/PUBLMAT6522104
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 499-528 (Articles)  
5.
69 p, 774.8 KB The monodromy conjecture for a space monomial curve with a plane semigroup / Martin-Morales, Jorge (Centro Universitario de la Defensa) ; Veys, Willem (KU Leuven. Departement Wiskunde) ; Vos, Lena (KU Leuven. Departement Wiskunde)
This article investigates the monodromy conjecture for a space monomial curve that appears as the special fiber of an equisingular family of curves with a plane branch as generic fiber. Roughly speaking, the monodromy conjecture states that every pole of the motivic, or related, Igusa zeta function induces an eigenvalue of monodromy. [...]
2021 - 10.5565/PUBLMAT6522105
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 529-597 (Articles)  
6.
15 p, 305.3 KB On groups of finite rank / Wehrfritz, B. A. F. (Queen Mary University of London. School of Mathematical Sciences)
We study the structure of groups of finite (Prufer) rank in a very wide class of groups and also of central extensions of such groups. As a result we are able to improve, often substantially, on a number of known numerical bounds, in particular on bounds for the rank (resp. [...]
2021 - 10.5565/PUBLMAT6522106
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 599-613 (Articles)  
7.
37 p, 473.8 KB A K-contact simply connected 5-manifold with no semi-regular Sasakian structure / Cañas, Alejandro (Universidad de Málaga. Departamento de Álgebra, Geometría y Topología) ; Muñoz, Vicente (Universidad de Málaga. Departamento de Álgebra, Geometría y Topología) ; Viruel Arbáizar, Antonio (Universidad de Málaga. Departamento de Álgebra, Geometría y Topología) ; Rojo, Juan (Universidad Politécnica de Madrid. ETSI Ingenieros Informáticos)
We construct the first example of a 5-dimensional simply connected compact manifold that admits a K-contact structure but does not admit any semi-regular Sasakian structure. For this, we need two ingredients: (a) to construct a suitable simply connected symplectic 4-manifold with disjoint symplectic surfaces spanning the homology, all of them of genus 1 except for one of genus g > 1; (b) to prove a bound on the second Betti number b2 of an algebraic surface with b1 = 0 and having disjoint complex curves spanning the homology, all of them of genus 1 except for one of genus g > 1.
2021 - 10.5565/PUBLMAT6522107
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 615-651 (Articles)  
8.
28 p, 447.6 KB Global existence for vector valued fractional reaction-diffusion equations / Basteiro, Agustín (Universidad de Buenos Aires. Instituto de Matematica Luis Santaló) ; Rial, Diego (Universidad de Buenos Aires. Instituto de Matematica Luis Santaló)
In this paper we study the initial value problem for infinite dimensional fractional non-autonomous reaction-diffusion equations. Applying general time-splitting methods, we prove the existence of solutions globally defined in time using convex sets as invariant regions. [...]
2021 - 10.5565/PUBLMAT6522108
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 653-680 (Articles)  
9.
46 p, 529.9 KB New eigenvalue estimates involving Bessel functions / El Chami, Fida (Lebanese University) ; Habib, Georges (Lebanese University) ; Ginoux, Nicolas (Universit'e de Lorraine)
Given a compact Riemannian manifold (Mn, g) with boundary ∂M, we give an estimate for the quotient R ∂M f dµg R M f dµg , where f is a smooth positive function defined on M that satisfies some inequality involving the scalar Laplacian. [...]
2021 - 10.5565/PUBLMAT6522109
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 681-726 (Articles)  
10.
20 p, 347.4 KB Algebraic reflexivity of diameter-preserving linear bijections between C(X)-spaces / Jiménez-Vargas, Antonio (Universidad de Almería. Departamento de Matemáticas) ; Sady, Fereshteh (Tarbiat Modares University (Teheran))
We prove that if X and Y are first countable compact Hausdorff spaces, then the set of all diameter-preserving linear bijections from C(X) to C(Y ) is algebraically reflexive.
2021 - 10.5565/PUBLMAT6522110
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 727-746 (Articles)  
11.
62 p, 603.6 KB A combinatorial approach to noninvolutive set-theoretic solutions of the Yang-Baxter equation / Gateva-Ivanova, Tatiana (American University in Bulgaria)
We study noninvolutive set-theoretic solutions (X, r) of the Yang- Baxter equations in terms of the properties of the canonically associated braided monoid S(X, r), the quadratic Yang-Baxter algebra A = A(k, X, r) over a field k, and its Koszul dual A!. [...]
2021 - 10.5565/PUBLMAT6522111
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 747-808 (Articles)  
12.
31 p, 566.1 KB An irrational-slope Thompson's group / Burillo, Jose (Universitat Politècnica de Catalunya. Departament de Matemàtiques) ; Nucinkis, Brita (University of London. Department of Mathematics) ; Reeves, Lawrence (University of Melbourne. School of Mathematics and Statistics)
The purpose of this paper is to study the properties of the irrational-slope Thompson's group Fτ introduced by Cleary in [11]. We construct presentations, both finite and infinite, and we describe its combinatorial structure using binary trees. [...]
2021 - 10.5565/PUBLMAT6522112
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 809-839 (Articles)  
13.
18 p, 376.6 KB Directional maximal function along the primes / Cladek, Laura (UCLA. Department of Mathematics) ; Madrid, José (UCLA. Department of Mathematics) ; Durcik, Polona (California Institute of Technology (Estats Units d'Amèrica)) ; Krause, Ben (Princeton University. Department of Mathematics)
We study a two-dimensional discrete directional maximal operator along the set of the prime numbers. We show existence of a set of vectors, which are lattice points in a sufficiently large annulus, for which the ' 2 norm of the associated maximal operator, with supremum taken over all large scales, grows with an epsilon power in the number of vectors. [...]
2021 - 10.5565/PUBLMAT6522113
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 841-858 (Articles)  
14.
18 p, 338.2 KB On the strong convergence of multiple ordinary integrals to multiple Stratonovich integrals / Bardina i Simorra, Xavier (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Rovira, Carles (Universitat de Barcelona. Departament de Matemàtiques i Informàtica)
2021 - 10.5565/PUBLMAT6522114
Publicacions matemàtiques, Vol. 65 Núm. 2 (2021) , p. 859-876 (Articles)  

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