Results 91 to 100 of about 14,054 (185)

Pointwise Ergodic Theorems for Nonconventional L^1 Averages [PDF]

open access: yes, 2010
A topic of classical interest in ergodic theory is extending Birkhoff's Pointwise Ergodic Theorem to various classes of nonconventional ergodic averages.
LaVictoire, Patrick Reilly
core  

Marginally trapped surfaces with pointwise 1-type Gauss map in Minkowski 4-space

open access: yes, 2014
A marginally trapped surface in the four-dimensional Minkowski space is a spacelike surface whose mean curvature vector is lightlike at each point. In the present paper we find all marginally trapped surfaces with pointwise 1-type Gauss map. We prove that a marginally trapped surface is of pointwise 1-type Gauss map if and only if it has parallel mean ...
openaire   +2 more sources

Rotational embeddings in $Bbb{E}^4$ with pointwise 1-type gauss map

open access: yes, 2011
In the present article we study the rotational embedded surfaces in $Bbb{E}^4$ . The rotational embedded surface was first studied by G. Ganchev and V. Milousheva as a surface in $Bbb{E}^4$ . The Otsuki (non-round) sphere in $Bbb{E}^4$ is one of the special examples of this surface.
Arslan, Kadri   +4 more
openaire   +2 more sources

Pointwise completeness and pointwise degeneracy of linear continuous-time fractional order systems [PDF]

open access: yes, 2009
A dynamical system described by homogeneous equation is called pointwise complete if every final state can be reached by suitable choice of the initial state. The system which is not pointwise complete is called pointwise degenerated.
Kaczorek, T., Busłowicz, M.
core  

Uniform estimates for positive solutions of a class of semilinear elliptic equations and related Liouville and one-dimensional symmetry results [PDF]

open access: yes, 2013
We consider the semilinear elliptic equation $\Delta u = W'(u)$ with Dirichlet boundary conditions in a smooth, possibly unbounded, domain $\Omega \subset \mathbb{R}^n$. Under suitable assumptions on the potential $W$, including the double well potential
Sourdis, Christos
core  

Classifications and characterizations of Baire-1 functions [PDF]

open access: yes, 1998
summary:Kechris and Louveau in [5] classified the bounded Baire-1 functions, which are defined on a compact metric space $K$, to the subclasses $\Cal B_{1}^{\xi }(K)$, $\xi < \omega_1$. In [8], for every ordinal $\xi < \omega_{1}$ we define a new type of
Kiriakouli, P.
core  

Pointwise Approximation by Bernstein Polynomials [PDF]

open access: yes, 2012
We improve the degree of pointwise approximation of continuous function f(x) by Bernstein operator, when x is close to the endpoints of [0, 1]. We apply the new estimate to establish upper and lower pointwise estimates for logarithmic function.
Tachev, Gancho Tachev
core  

Pointwise adaptive estimation for quantile regression [PDF]

open access: yes
A nonparametric procedure for quantile regression, or more generally nonparametric M-estimation, is proposed which is completely data-driven and adapts locally to the regularity of the regression function.
Yves Rozenholc   +2 more
core  

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