Buscar
Mostrando ítems 11-20 de 467
On Newton-Sobolev spaces
(Kossuth Lajos Tudomanyegyetem, 2017-01)
Newton-Sobolev spaces, as presented by N. Shanmugalingam, describe a way to extend Sobolev spaces to the metric setting via upper gradients, for metric spaces with ´sucient´ paths of nite length. Sometimes, as is the case ...
On the Uniform Doubling of Hutchinson Orbits of Contractive Mappings
(Instituto de Matemática Aplicada del Litoral, 2008-12)
We are interested in the preservation of doubling properties along the Hutchinson orbit generated by successive applications of contraction mappings on a metric measure space. We construct some elementary examples, built ...
Nonlocal Schrödinger equations in metric measure spaces
(Elsevier, 2015-10)
In this note we consider the pointwise convergence to the initial data for the solutions of some nonlocal dyadic Schrödinger equations on spaces of homogeneous type. We prove the a.e. convergence when the initial data ...
Solving Multiple Queries through a Permutation Index in GPU
(Revista Computación y Sistemas; Vol. 17 No.3, 2013-09-11)
Abstract. Query-by-content by means of similarity
search is a fundamental operation for applications that
deal with multimedia data. For this kind of query
it is meaningless to look for elements exactly equal
to the ...
Level sets of depth measures in abstract spaces
(2021)
The lens depth of a point has been recently extended to general metric spaces, which is not the case for most depths. It is defined as the probability of being included in the intersection of two random balls centred at ...
Affinity and distance. On the Newtonian structure of some data kernels
(De Gruyter Open Ltd, 2018-02)
Let X be a set. Let K(x, y) > 0 be a measure of the affinity between the data points x and y. We prove that K has the structure of a Newtonian potential K(x, y) = φ(d(x, y)) with φ decreasing and d a quasi-metric on X under ...
Countable contraction mappings in metric spaces: Invariant Sets and Measures
(Versita, 2014-04)
We consider a complete metric space (X, d) and a countable number of contraction mappings on X, F = {Fi : i ∈ N}. We show the existence of a smallest invariant set (with respect to inclusion) for F. If the maps Fi are of ...
Dyadic nonlocal diffusion in metric measure spaces
(De Gruyter, 2015-06)
In this paper we solve the initial value problem for the nonlocal diffusion generated by the space fractional derivative induced by the dyadic tilings of M. Christ on a space of homogeneous type. We consider the problems ...
A Mean Value Theorem For Metric Spaces
(Wiley-VCH Verlag, 2015)
QuickDBC: uma separação rápida de clusters baseada em densidade para espaços métricos
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de InformáticaEngenharia de ComputaçãoUTFPR, 2018-12-06)
The class identification task for spatial databases can be achieved by clustering algorithms. However, it requires a domain knowledge to determine some input parameters to discover clusters and the improvement of its ...