## Search

Now showing items 11-20 of 23

#### Generalized flow invariance for differential inclusions

(2005-05-12)

We introduce a generalized notion of invariance for differential inclusions, using a proximal aiming condition in terms of proximal normals. A set of sufficient conditions for the weak and strong invariance in the generalized ...

#### Abundance of elements beyond the iron group in cool do white dwarfs

(2005-09-10)

We report the presence of elements beyond the iron group in the atmospheres of the cool DO white dwarfs HD 149499 B and HZ 21. Photospheric lines of germanium (Z = 32), arsenic (33), selenium (34), tin (50), tellurium (52), ...

#### On some inequalities for beta and gamma functions via some classical inequalities

(2005-10-31)

We improve several results recently established by Dragomir et al. in (2000) for the Gamma and Beta functions. All we need is some clever applications of classical inequalities. Copyright © 2005 Hindawi Publishing Corporation.

#### The compton-getting effect of energetic particles with an anisotropic pitch-angle distribution: An application to Voyager 1 results at ∼85 AU

(2005-05-10)

This paper provides a theoretical simulation of anisotropy measurements by the Low-Energy Charged Particle (LECP) experiment on Voyager. The model starts with an anisotropic pitch-angle distribution function in the solar ...

#### The model dependence of solar energetic particle mean free paths under weak scattering

(2005-07-01)

The mean free path is widely used to measure the level of solar energetic particles' diffusive transport. We model a solar energetic particle event observed by Wind STEP at 0.31-0.62 MeV nucleonˉ¹, by solving the focused ...

#### Cosmic rays from gamma-ray bursts in the galaxy

(2005-07-20)

The rate of terrestrial irradiation events by Galactic gamma-ray bursts (GRBs) is estimated using recent standard-energy results. We assume that GRBs accelerate high-energy cosmic rays, and we present results of three-dimensional ...

#### The chromospheric activity and ages of M dwarf stars in wide binary systems

(2005-05)

We investigate the relationship between age and chromospheric activity for 139 M dwarf stars in wide binary systems with white dwarf companions. The age of each system is determined from the cooling age of its white dwarf ...

#### Where Are the Magnetic White Dwarfs with Detached, Nondegenerate Companions?

(2005-05)

The Sloan Digital Sky Survey has already more than doubled the sample of white dwarfs with spectral classi-
fications, the subset with detached M dwarf companions, and the subset of magnetic white dwarfs. In the course ...

#### Linear functional differential equations possessing solutions with a given growth rate

(2005-02-01)

We establish optimal, in a sense, conditions under which, for arbitrary forcing terms from a suitable class, a linear inhomogeneous functional differential equation in a preordered Banach space possesses solutions satisfying ...

#### Fixed point theory for Mönch-type maps defined on closed subsets of Fréchet spaces: the projective limit approach

(2005)

New Leray-Schauder alternatives are presented for Mönch-type maps defined between Fréchet spaces. The proof relies on viewing a Fréchet space as the projective limit of a sequence of Banach spaces.