Browsing Facultad de Matemática, Astronomía, Física y Computación by Title
Now showing items 1077-1096 of 1190
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Soluciones positivas para problemas elípticos sublineales y singulares
(2018-03)En esta tesis se estudiaron tres problemas relacionados a ecuaciones de reacción difusión elípticas sublineales y singulares cuando el término de reacción cambia de signo. En primer lugar se trató la existencia y no ... -
Soluciones positivas para problemas no lineales que involucran al φ-Laplaciano unidimensional
(2017-03)Sean Ω := (a,b) ⊂ R, m ∈ L^1(Ω) y λ > 0 un parámetro real. Sea L el operador diferencial dado por Lu := −φ(u 0 ) 0 + r(x)φ(u), donde φ : R → R es un homeomorfismo creciente e impar y 0 ≤ r ∈ L 1 (Ω). Estudiamos la ... -
Soluciones positivas para problemas que involucran el ϕ-Laplaciano
(2022-03)Sean Ω un dominio suave y acotado en RN, hλ: Ω x [0,∞) → R una función Carathéodory, λ>0 un parámetro real y ϕ: RN → RN una función continua estrictamente monótona. En esta tesis estudiamos la existencia de soluciones ... -
Some totally geodesic submanifolds of the nonlinear Grassmannian of a compact symmetric space
(2014)Let M and N be two connected smooth manifolds, where M is compact and oriented and N is Riemannian. Let E be the Fréchet manifold of all embeddings of M in N, endowed with the canonical weak Riemannian metric. Let ∼ be the ... -
Sonido y ondas
(2021-03)En este trabajo se relata la experiencia de aprendizaje en las distintas etapas de las prácticas docentes en el marco de la materia “Metodología, Observación y Práctica de la Enseñanza” (MOPE), que corresponde al cuarto ... -
Soporte para ARM en un compilador verificado
(2022-12)Este trabajo es un estudio de un lenguaje de programación, llamado Jasmin, utilizado para desarrollar criptografía eficiente y confiable, así como una propuesta de una extensión a esta herramienta para agregar soporte para ... -
Spectra of lens spaces from 1-norm spectra of congruence lattices
(2016)To every n-dimensional lens space L, we associate a congruence lattice L in Zm, with n = 2m−1 and we prove a formula relating the multiplicities of Hodge-Laplace eigenvalues on L with the number of lattice elements of a ... -
Spherical analysis on homogeneous vector bundles of the 3-dimensional euclidean motion group
(2018)We consider R3 as a homogeneous manifold for the action of the motion group given by rotations and translations. For an arbitrary τ∈SO(3)ˆ, let Eτ be the homogeneous vector bundle over R3 associated with τ. An interesting ... -
Spherical functions : the spheres vs the projective spaces
(2014)In this paper we establish a close relationship between the spherical functions of the n-dimensional sphere Sn ≃ SO(n + 1)/SO(n) and the spherical functions of the n-dimensional real projective space P n(R) ≃ SO(n + ... -
Spherical functions associated with the three dimensional sphere
(2014)In this paper, we determine all irreducible spherical functions of any K-type associated to the pair (G;K) = (SO(4); SO(3)). This is accomplished by associating to a vector valued function H = H(u) of a real variable ... -
Spherical functions of fundamental K-types associated with the n-dimensional sphere
(2014)In this paper, we describe the irreducible spherical functions of fundamental K-types associated with the pair (G, K) = (SO(n + 1), SO(n)) in terms of matrix hypergeometric functions. The output of this description is that ... -
A statistical study of heterogeneous nucleation of ice by molecular dynamics
(2015)We studied the stochastic nature of heterogeneous nucleation of supercooled liquid water by molecular dynamics simulations. The systems were composed of 768 molecules; M of them had their positions restricted forming a ... -
Stopping power of palladium for protons in the energy range 0.300-3.100 MeV
(2013)The stopping power of palladium for protons has been measured using the transmission method with an overall uncertainty of around 5% over the energy range Ep=(0.300–3.100) MeV. These stopping power data are then compared ... -
Strictly positive solutions for one dimensional nonlinear elliptic problems
(2014)We study the existence and nonexistence of strictly positive solutions for the elliptic problems -- in a bounded open interval, with zero boundary conditions, where -- is a strongly uniformly elliptic differential operator, ... -
Strong cosmic censorship and Misner spacetime
(2015)Misner spacetime is among the simplest solutions of Einstein's equation that exhibits a Cauchy horizon with a smooth extension beyond it. Besides violating strong cosmic censorship, this extension contains closed timelike ... -
Structural and magnetic changes induced by electron and ion irradiation on HOPG
(2015)In recent decades, many studies reported magnetism in carbon-based materials. This phenomenon was attributed to structural defects within the sample. Many authors showed an increase of magnetization in HOPG (Highly Oriented ... -
Structure constrained by metadata in networks of chess players
(2017)Chess is an emblematic sport that stands out because of its age, popularity and complexity. It has served to study human behavior from the perspective of a wide number of disciplines, from cognitive skills such as memory ... -
Structure of the Ru, Ag and Te L X-ray emission spectra
(2016)The emission of X-rays in atomic transitions from L-shell vacancy states of Ru, Ag and Te induced by electron incidence was studied. To this end, L X-ray spectra were measured with a wavelength dispersive spectrometer, and ... -
Study of Kb X-ray emission spectroscopy applied to Mn(2x)V(1-x)O4 (x=0 and1/3) oxyspinel and comparison with XANES
(2014-03)Oxidation state and coordination of transition metal cations seems to be hard to assess when considering multiple cations, each one with different possible oxidation states. In fact, this is the case of the spinel-type ... -
Study of lead levels in soils by weathering of metallic Pb bullets used in dove hunting in Córdoba, Argentina
(2014)A study of level of Pb in soils of the center-north of the Province of Córdoba, a worldwide recognized tourist region for dove hunting, was performed in this work. The native forest of the region has a great population ...
