Title
Self-Similar Lifting and Persistent Touch-Down Points in the Thin-Film Equation.
Abstract
We study self-similar solutions of the thin-film equation h(t)+(h(m)h(xxx))(x) = 0 in {(x, t) : h(x, t) > 0} with m E (0, 4] that describe the lifting of an isolated touch-down point given by an initial profile of the form h(in) (x) = This provides a mechanism for nonuniqueness of the thin-film equation with m is an element of (2,4) since solutions with a persistent touch-down point also exist in this case. In order to prove the existence of the self-similar solutions, we need to study a four-dimensional continuous dynamical system. The proof consists of a shooting argument based on the identification of invariant regions and on suitable energy formulas.
Year
DOI
Venue
2018
10.1137/17M1141485
SIAM JOURNAL ON MATHEMATICAL ANALYSIS
Keywords
Field
DocType
self-similar solutions,thin-film equation,nonuniqueness
Mathematical analysis,Pure mathematics,Thin-film equation,Invariant (mathematics),Dynamical system,Mathematics
Journal
Volume
Issue
ISSN
50
2
0036-1410
Citations 
PageRank 
References 
0
0.34
1
Authors
3
Name
Order
Citations
PageRank
C. M. Cuesta143.38
Hans Knüpfer201.69
J. J. L. Velázquez3138.41