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Browsing Matemáticas by Submit Date

Now showing items 21-40 of 184

Asymptotic measures of random logistic maps

Ble, G; Castellanos, V; Falconi, M (2007)

In this paper, we consider a system whose state x changes to F-sigma(x) if a perturbation occurs at the time t, for t > 0
On the Omega - EP property

Mendez-Lango, H (2007)

A continuum X has the Omega - EP property provided that for each self-mapping f the set of nonwandering points of f is contained in the closure of the set of eventually periodic points of f. It is known that the interval ...
On the dynamics of mechanical systems with homogeneous polynomial potentials of degree 4

Falconi, M; Lacomba, EA; Vidal, C (2007)

In this work we study mechanical systems defined by homogeneous polynomial potentials of degree 4 on the plane, when the potential has a definite or semi-definite sign and the energy is non-negative. We get a global ...
Cones that are 1/2-homogeneous

Nadler, SB; Pellicer-Covarrubias, P (2007)

A space is 1/2-homogeneous provided that there are exactly two orbits for the action of 2 the group of homeomorphisms of the space onto itself. Let X be a nonempty compact metric space such that the cone over X is ...
(1)(2)-Homogeneous continua with cut points

Nadler, SB; Pellicer-Covarrubias, P; Puga, I (2007)

A space is said to be _21-homogeneous provided that there are exactly two orbits for the action of the group of homeomorphisms of the space onto itself. It is shown that if X is a 1/2-homogeneous continuum with at least ...
The Banach-Mazur compactum BM(2) is homeomorphic to the orbit space (exp S-1)/O(2)

Antonyan, SA (2007)

We prove a general theorem about the orbit spaces of compact Lie group actions which are Hilbert cube manifolds. This result is further applied to prove that the Banach-Mazur compactum BM(2) is homeomorphic to the orbit ...
Some new topological cardinal inequalities

Casarrubias-Segura, F; Contreras-Carreto, A; Ramirez-Paramo, A (2007)

In this paper we make use of the Pol-Sapirovski's technique to prove several cardinal inequalities, which generalize other well-known inequalities. (C) 2006 Elsevier B.V. All rights reserved.
Within-host population dynamics of antibiotic-resistant M. tuberculosis

Alavez-Ramirez, J; Castellanos, JRA; Esteva, L; Flores, JA; Fuentes-Allen, JL; Gomez, G; García-Ramos, G; López-Estrada, J (2007)

Mathematical models for the population dynamics of de novo resistant Mycobacterium tuberculosis within individuals are studied. The models address the use of one or two antimicrobial drugs for treating latent tuberculosis ...
Poincare series and instability of exponential maps

Makienko, P; Sienra , G (2006)

We relate the properties of the postsingular set for the exponential family regarding stability questions. We calculate the action of the Ruelle operator for the exponential family, and we prove that if the asymptotic (or ...
Quadratic forms associated to stratifying systems

Marcos, EDN; Mendoza, O; Saenz, C; Zuazua Vega, Rita Esther (2006)

Let R be an algebra, and let (theta, <=) be a stratifying system of R-modules. If the category) F(theta) is theta-directing, then we prove that ind F(theta) is finite. In order to do that, we introduce a quadratic form ...
The process of finding f ' for an entire function f has infinite topological entropy

Mendez-Lango, H (2004)

Let (H (C), p) be the metric space of all entire functions f where the metric p induces the topology of uniform convergence on compact subsets of the complex plane. Let D : H (C) -> H (C) be the linear mapping that assigns ...
An ECMAScript compiler for the NET framework

López-Nataren, C; Viso Gurovich, Elisa (2005)

Since the publication of the standard that describes the multi-language framework known as Common Language Infrastructure (CLI), it has been a challenge letting non class-based programming languages being run on the CLI. ...
West's problem on equivariant hyperspaces and Banach-Mazur compacta (vol 355, pg 3379, 2003)

Antonyan, SA (2006)
A parameter in the learning rule of SOM that incorporates activation frequency

Neme, A; Miramontes, P (2006)

In the traditional self-organizing map (SOM) the best matching unit (BMU) affects other neurons, through the learning rule, as a function of distance. Here, we propose a new parameter in the learning rule so neurons are ...
Free G-spaces and maximal equivariant compactifications

Antonyan, N; Antonyan, SA (2005)

For a compact Lie group G we prove that every free (resp., semifree) G-space admits a based-free (resp., semifree) G-compactification. Examples of finite- and infinite-dimensional G-spaces are presented that do not admit ...
Retractions and contractibility in hyperspaces

Charatonik, JJ; Pellicer-Covarrubias, P (2007)

Given a metric continuum X, let 2(X) denote the hyperspace of all nonempty closed subsets of X. For each positive integer k let C-k(X) stand for the hyperspace of members of 2(X) having at most k components. Consider ...
Bourgin-Yang-type theorem for alpha-compact perturbations of closed operators. Part I. The case of index theories with dimension property

Antonyan, SA; Balanov, ZI; Gel'man, BD (2006)

A variant of the Bourgin-Yang theorem for a-compact perturbations of a closed linear operator (in general, unbounded and having an infinite-dimensional kernel) is proved. An application to integrodifferential equations is ...
On 1/2-homogeneous continua

Neumann-Lara, V; Pellicer-Covarrubias, P; Puga, I (2006)

A continuum is 1/2-homogeneous provided there are exactly two orbits for the action of the group of homeomorphisms of the continuum onto itself. In this paper we study some relations between 1/2-homogeneous continua and ...
Tilting categories with applications to stratifying systems

Mendoza, O; Saenz, C (2006)

In the study of standardly stratified algebras and stratifying systems. we find an object which is either a tilting module or one whose properties strongly remind us of a tilting module. This tilting module appeared already ...
Orbit spaces and unions of equivariant absolute neighborhood extensors (vol 146, pg 289, 2005)

Antonyan, SA (2006)

Now showing items 21-40 of 184

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