Complicated dynamics in scalar semilinear parabolic equations in higher space dimension

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


We study the dynamics of the boundary value problem ut - Lu = g(x, u, ▽u), x ε{lunate} Ω, (1) u |∂Ω = 0, (2) where L is a second order uniformly elliptic operator and Ω ⊂RN is diffeomorphic to the ball in RN, N≥2. The main result asserts that given any Ck-vector field V on RN+1 with V(0) = 0 one can adjust coefficients of L and the function g such that the corresponding problem (1), (2) has an N+ 1-dimensional invariant manifold through the equilibrium u ≡ 0 and the Taylor expansion at u ≡ 0 of the vector field representing the flow on this manifold coincides (in appropriate coordinates) with the Taylor expansion of V, up to k-th order terms. This result implies that a hyperbolic invariant N-torus can be found in (1), (2) (if L and g are appropriately chosen). This result also indicates that "chaotic dynamics" is likely to occur for some choices of L and g.

Original languageEnglish (US)
Pages (from-to)244-271
Number of pages28
JournalJournal of Differential Equations
Issue number2
StatePublished - Feb 1991


Dive into the research topics of 'Complicated dynamics in scalar semilinear parabolic equations in higher space dimension'. Together they form a unique fingerprint.

Cite this