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Research literature 495 records found  beginprevious475 - 484nextend  jump to record: Search took 0.03 seconds. 
475.
37 p, 656.7 KB Convergence of the mass-transport steepest descent scheme for the sub-critical Patlak-Keller-Segel model / Blanchet, Adrien (Centre de Recerca Matemàtica) ; Calvez, Vincent (ENS. Departement de Mathématiques et Applications (París, França)) ; Carrillo de la Plata, José Antonio (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Variational steepest descent approximation schemes for the modified Patlak-Keller-Segel equation with a logarithmic interaction kernel in any dimension are considered. We prove the convergence of the suitably interpolated in time implicit Euler scheme, defined in terms of the Euclidean Wasserstein distance, associated to this equation for sub-critical masses. [...]
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 738)  
Detailed record - Creative Commons
476.
27 p, 246.5 KB Generating trees for permutations avoiding generalized patterns / Elizalde, Sergi ; Centre de Recerca Matemàtica
We construct generating trees with with one, two, and three labels for some classes of permutations avoiding generalized patterns of length 3 and 4. These trees are built by adding at each level an entry to the right end of the permutation, which allows us to incorporate the adjacency condition about some entries in an occurrence of a generalized pattern. [...]
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 737)  
Detailed record - Creative Commons
477.
26 p, 324.6 KB On the asymptotic expansion of the colored Jones polynomial for torus knots / Dubois, Jérôme ; Kashaev, Rinat ; Centre de Recerca Matemàtica
In the asymptotic expansion of the hyperbolic specification of the colored Jones polynomial of torus knots, we identify different geometric contributions, in particular Chern-Simons invariant and Reidemeister torsion.
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 736)  
Detailed record - Creative Commons
478.
33 p, 277.2 KB Weighted Hardy spaces for the unit disc: approximation properties / Boivin, André ; Gauthier, Paul M. ; Zhu, Changzhong ; Centre de Recerca Matemàtica
In this paper we study basic properties of the weighted Hardy space for the unit disc with the weight function satisfying Muckenhoupt's (Aq) condition, and study related approximation problems (expansion, moment and interpolation) with respect to two incomplete systems of holomorphic functions in this space.
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 735)  
Detailed record - Creative Commons
479.
30 p, 311.3 KB Infinite time aggregation for the critical Patlak-Keller-Segel model in R2 / Blanchet, Adrien (Centre de Recerca Matemàtica) ; Carrillo de la Plata, José Antonio (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Masmoudi, Nader (New York University. Courant Institute of Mathematical Sciences) ; Centre de Recerca Matemàtica
We analyze the two-dimensional parabolic-elliptic Patlak-Keller-Segel model in the whole Euclidean space R2. Under the hypotheses of integrable initial data with finite second moment and entropy, we first show local in time existence for any mass of "free-energy solutions", namely weak solutions with some free energy estimates. [...]
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 734)  
Detailed record - Creative Commons
480.
23 p, 267.4 KB Minimal lenght elements of Thompson's groups F(p) / Fordham, S. Blake ; Cleary, Sean ; Centre de Recerca Matemàtica
We describe a method for determining the minimal length of elements in the generalized Thompson's groups F(p). We compute the length of an element by constructing a tree pair diagram for the element, classifying the nodes of the tree and summing associated weights from the pairs of node classifications. [...]
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 733)  
Detailed record - Creative Commons
481.
23 p, 241.4 KB ┴N as an Abstract Elementary Class / Baldwin, John T. ; Eklof, Paul C. ; Trlifaj, Jan ; Centre de Recerca Matemàtica
"Vegeu el resum a l'inici del documents del fitxer adjunt".
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 732)  
Detailed record - Creative Commons
482.
14 p, 191.6 KB Shelah's singular compactness theorem / Eklof, Paul C. ; Centre de Recerca Matemàtica
We present Shelah's famous theorem in a version for modules, together with a self-contained proof and some examples. This exposition is based on lectures given at CRM in October 2006.
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 731)  
Detailed record - Creative Commons
483.
116 p, 619.5 KB Contractive probability metrics and asymptotic behavior of dissipative kinetic equations / Carrillo de la Plata, José Antonio (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Toscani, Giuseppe (Università di Pavia. Dipartimento di Matematica) ; Centre de Recerca Matemàtica, 730
The present notes are intended to present a detailed review of the existing results in dissipative kinetic theory which make use of the contraction properties of two main families of probability metrics: optimal mass transport and Fourier-based metrics. [...]
Centre de Recerca Matemàtica 2007 (Prepublicacions del Centre de Recerca Matemàtica ; 730)  
Detailed record - Creative Commons
484.
41 p, 1.1 MB Numerical schemes of diffusion asymptotics and moment closures for kinetic equations / Carrillo de la Plata, José Antonio (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Goudon, Thierry (Université des Sciences et Technologies de Lille) ; Lafitte, Pauline (Université des Sciences et Technologies de Lille) ; Vecil, Francesco (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Centre de Recerca Matemàtica
We investigate different models that are intended to describe the small mean free path regime of a kinetic equation, a particular attention being paid to the moment closure by entropy minimization. We introduce a specific asymptotic-induced numerical strategy which is able to treat the stiff terms of the asymptotic diffusive regime. [...]
Centre de Recerca Matemàtica 2006 (Prepublicacions del Centre de Recerca Matemàtica ; 729)  
Detailed record - Creative Commons

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