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Groups acting on regular rooted trees: congruence subgroup problem and portrait growth
(2017-12-11)
Tesi honek zuhaitz errotu erregularren automorfismoen taldeen inguruko problema batzuk ebaztea du helburu. Talde hauek, Grigorchuk-en lehen taldea konkretuki, 80ko hamarkadan izan ziren lehenengoz definituak (ikus[26]), ...
Singular perturbations of the dirac hamiltonian
(2017-12-15)
This thesis is devoted to the study of the Dirac Hamiltonian perturbed by delta-type potentials andCoulomb-type potentials. We analysed on the delta-shell interaction on bounded and smooth domainsand its approximation by ...
Estimation of preterm labor immediacy by nonlinear methods
(Public Library Science, 2017-06-01)
Preterm delivery affects about one tenth of human births and is associated with an increased perinatal morbimortality as well as with remarkable costs. Even if there are a number of predictors and markers of preterm delivery, ...
Soil Erosion and Forests Biomass as Energy Resource in the Basin of the Oka River in Biscay, Northern Spain
(MDPI, 2017-07)
The aim of this work has been the development of a methodology for the evaluation of residual forest biomass in Biscay, a province in northern Spain. The study area is located in the Oka river basin, an area of great ...
Binormal Motion of Curves with Constant Torsion in 3-Spaces
(Hindawi, 2017)
We study curve motion by the binormal flow with curvature and torsion depending velocity and sweeping out immersed surfaces. Using the Gauss-Codazzi equations, we obtain filaments evolving with constant torsion which arise ...
Orness For Idempotent Aggregation Functions
(MDPI, 2017-09-20)
Aggregation functions are mathematical operators that merge given data in order to obtain a global value that preserves the information given by the data as much as possible. In most practical applications, this value is ...
An efficient evolutionary algorithm for the orienteering problem
(Elsevier, 2017-09-06)
This paper deals with the Orienteering Problem, which is a routing problem. In the Orienteering
Problem each node has a profit assigned and the goal is to find the route that maximizes the total
collected profit subject ...
On the MIT Bag Model in the Non- relativistic Limit
(Springer, 2017-06-12)
This paper is devoted to the spectral investigation of the MIT bag model, that is, the Dirac operator on a smooth and bounded domain of R^3 with certain boundary conditions. When the mass m goes to infinity, we provide ...
On the congruence subgroup property for GGS-groups
(AMS, 2017-01-31)
We show that all GGS-groups with non-constant defining vector satisfy the congruence subgroup property. This provides, for every odd prime p, many examples of finitely generated, residually finite, non-torsion groups whose ...
Shell interactions for Dirac operators
(2017-08-03)