Results 21 to 30 of about 326,138 (281)

Asymptotic integration of functional differential systems with oscillatory decreasing coefficients: a center manifold approach

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we study the asymptotic integration problem in the neighborhood of infinity for a certain class of linear functional differential systems. We propose a method for construction of the asymptotics of solutions in the critical case.
Pavel Nesterov
doaj   +1 more source

Asymptotic Integration of a Certain Second-Order Linear Delay Differential Equation

open access: yesМоделирование и анализ информационных систем, 2016
We construct some asymptotic formulas for solutions of a certain linear second-order delay differential equation when the independent variable tends to infinity. Two features concerning the considered equation should be emphasized. First, the coefficient
P. N. Nesterov
doaj   +1 more source

Laplacian eigenvalues functionals and metric deformations on compact manifolds [PDF]

open access: yes, 2007
In this paper, we investigate critical points of the Laplacian's eigenvalues considered as functionals on the space of Riemmannian metrics or a conformal class of metrics on a compact manifold.
Agricola   +33 more
core   +4 more sources

Asymptotic Integration of Certain Differential Equations in Banach Space

open access: yesМоделирование и анализ информационных систем, 2017
We investigate the problem of constructing the asymptotics for weak solutions of certain class of linear differential equations in the Banach space as the independent variable tends to infinity.
Pavel N. Nesterov
doaj   +1 more source

The Topology of Probability Distributions on Manifolds [PDF]

open access: yes, 2014
Let $P$ be a set of $n$ random points in $R^d$, generated from a probability measure on a $m$-dimensional manifold $M \subset R^d$. In this paper we study the homology of $U(P,r)$ -- the union of $d$-dimensional balls of radius $r$ around $P$, as $n \to \
Bobrowski, Omer, Mukherjee, Sayan
core   +1 more source

Exploring the Differential Geometry of Reliability Function: Insights from Lifetime Weibull Distributions Under Neutrosophic Environment [PDF]

open access: yesNeutrosophic Sets and Systems
This paper characterizes a set N as a two-dimensional surface marked by 𝑅 + × 𝑅 + and demonstrates its properties as a topological 2-reliability manifold and a differential reliability manifold.
Nada Mohammed Abbas   +2 more
doaj   +1 more source

Holography for Non-Critical Superstrings [PDF]

open access: yes, 1999
We argue that a class of ``non-critical superstring'' vacua is holographically related to the (non-gravitational) theory obtained by studying string theory on a singular Calabi-Yau manifold in the decoupling limit $g_s\to 0$.
Giveon, A., Kutasov, D., Pelc, O.
core   +4 more sources

Bose-Einstein condensation of scalar fields on hyperbolic manifolds [PDF]

open access: yes, 1992
The problem of Bose-Einstein condensation for a relativistic ideal gas on a 3+1 dimensional manifold with a hyperbolic spatial part is analyzed in some detail.
Cognola, Guido, Vanzo, Luciano
core   +2 more sources

Singularly perturbed semilinear Neumann problem with non-normally hyperbolic critical manifold

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2010
In this paper, we investigate the problem of existence and asymptotic behavior of the solutions for the nonlinear boundary value problem \begin{eqnarray*} \epsilon y''+ky=f(t,y),\quad t\in\langle a,b \rangle, \quad k>0,\quad ...
Robert Vrabel
doaj   +1 more source

Properties of the Lindemann mechanism in phase space

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
We study the planar and scalar reductions of the nonlinear Lindemann mechanism of unimolecular decay. First, we establish that the origin, a degenerate critical point, is globally asymptotically stable. Second, we prove there is a unique scalar solution (
M. S. Calder, D. Siegel
doaj   +1 more source

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