A Survey of Instability of Steady States
Date Issued
2014
Date
2014
Author(s)
Hsiao, Yu-Hsiu
Abstract
We consider the steady states solutions of parabolic and hyperbolic equa- tions such as ∂tu − ∆u = f(x, u) and ∂ttu − ∆u = f(x, u). Steady state which means a system that has numbers of properties that are unchanged in time. For instance, property p of the steady state system has zero partial derivative with respect to time : ∂p = 0. ∂t In this thesis we will give a proof about the instability results about the solutions of a general elliptic equation of the form Lφ = f (x, φ),x ∈ Rn ,where L is a linear,second-order elliptic differential operator whose coefficients are smooth and bounded. φ is the time-independent solution of Lu = f (x, u),x ∈ Rn. To complete our work, we mainly consult paper[2] and [3].Also for some basic preliminaries we consult text books[1] and [4].
Subjects
Nonlinear heat equation
Nonlinear wave equation
Steady states
Instability
Type
thesis
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