Results 31 to 40 of about 8,898,771 (321)

A New Approach to Non-Singular Plane Cracks Theory in Gradient Elasticity

open access: yesMathematical and Computational Applications, 2019
A non-local solution is obtained here in the theory of cracks, which depends on the scale parameter in the non-local theory of elasticity. The gradient solution is constructed as a regular solution of the inhomogeneous Helmholtz equation, where the ...
Sergey A. Lurie   +2 more
doaj   +1 more source

On the Structure of Advective Accretion Disks At High Luminosity

open access: yes, 2000
Global solutions of optically thick advective accretion disks around black holes are constructed. The solutions are obtained by solving numerically a set of ordinary differential equations corresponding to a steady axisymmetric geometrically thin disk ...
Fukue J.   +14 more
core   +2 more sources

A necessary and sufficient condition for uniqueness of solutions of singular differential inequalities

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
The author proves that the abstract differential inequality ‖u′(t)−A(t)u(t)‖2≤γ[ω(t)+∫0tω(η)dη] in which the linear operator A(t)=M(t)+N(t), M symmetric and N antisymmetric, is in general unbounded, ω(t)=t−2ψ(t)‖u(t)‖2+‖M(t)u(t)‖‖u(t)‖ and γ is a ...
Alan V. Lair
doaj   +1 more source

The formation of solitary wave solutions and their propagation for Kuralay equation

open access: yesResults in Physics, 2023
In this paper, the main motive is to mathematical explore the Kuralay equation, which find applications in various fields such as ferromagnetic materials, nonlinear optics, and optical fibers. The objective of this study is to investigate different types
Waqas Ali Faridi   +5 more
doaj   +1 more source

The use of dual reciprocity method for 2D laminar viscous flow [PDF]

open access: yesMATEC Web of Conferences, 2020
The paper presents the use of the dual reciprocity multidomain singular boundary method (SBMDR) for the solution of the laminar viscous flow problem described by Navier-Stokes equations.
Mužík Juraj
doaj   +1 more source

New solutions of Heun general equation

open access: yes, 2009
We show that in four particular cases the derivative of the solution of Heun general equation can be expressed in terms of a solution to another Heun equation.
Appell P   +12 more
core   +1 more source

Uniqueness of singular solution of semilinear elliptic equation

open access: yes, 2010
In this paper, we study asymptotic behavior of solution near 0 for a class of elliptic problem.
Baishun, Lai, Qing, Luo
core   +1 more source

Subharmonic Solutions in Singular Systems

open access: yesJournal of Differential Equations, 1996
The authors consider the problem of bifurcation of periodic solutions in singular systems of differential equations \[ \varepsilon\dot{u}=f(u)+\varepsilon g(t,u,\varepsilon)\quad u\in\mathbb{R}^n, \] where \(g(t+2,u,\varepsilon)=g(t,u,\varepsilon)\) and \(\dot{u}=f(u)\) has an orbit \(\gamma(t)\) homoclinic to a hyperbolic equilibrium point \(p\).
Battelli, Flaviano, Fečkan, Michal
openaire   +2 more sources

On singular solutions of a multidimensional differential equation of Clairaut-type with power and exponential functions

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2019
In the theory of ordinary differential equations, the Clairaut equation is well known. This equation is a non-linear differential equation unresolved with respect to the derivative.
Liliya Leonidovna Ryskina
doaj   +1 more source

Absence of the Kasner singularity in the effective dynamics from loop quantum cosmology

open access: yes, 2005
In classical general relativity, the generic approach to the initial singularity is usually understood in terms of the BKL scenario. In this scenario, along with the Bianchi IX model, the exact, singular, Kasner solution of vacuum Bianchi I model also ...
A. Ashtekar   +5 more
core   +1 more source

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