Advances in Differential Equations

The thin film equation with $2 \leq n<3$: finite speed of propagation in terms of the $L^1$-norm

Josephus Hulshof and Andrey E. Shishkov

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We consider the equation $u_t+(u^nu_{xxx})_x=0$ with $2\le n <3$ and establish an estimate for the finite speed of propagation of the support of compactly supported nonnegative solutions. The estimate depends only on the $L^1$-norm and is valid a posteriorifor strong solutions obtained through a Bernis-Friedman regularization.

Article information

Adv. Differential Equations, Volume 3, Number 5 (1998), 625-642.

First available in Project Euclid: 18 April 2013

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 35Q53: KdV-like equations (Korteweg-de Vries) [See also 37K10]
Secondary: 76D99: None of the above, but in this section


Hulshof, Josephus; Shishkov, Andrey E. The thin film equation with $2 \leq n&lt;3$: finite speed of propagation in terms of the $L^1$-norm. Adv. Differential Equations 3 (1998), no. 5, 625--642.

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