Geodesic
Relatively unstable attractors
Informatics and Automation, Mathematical control theory and differential equations, Tome 277 (2012), pp. 91-100.

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There are different non-equivalent definitions of attractors in the theory of dynamical systems. The most common are two definitions: the maximal attractor and the Milnor attractor. The maximal attractor is by definition Lyapunov stable, but it is often in some ways excessive. The definition of Milnor attractor is more realistic from the physical point of view. The Milnor attractor can be Lyapunov unstable though. One of the central problems in the theory of dynamical systems is the question of how typical such a phenomenon is. This article is motivated by this question and contains new examples of so-called relatively unstable Milnor attractors. Recently I. Shilin has proved that these attractors are Lyapunov stable in the case of one-dimensional fiber under some additional assumptions. However, the question of their stability in the case of multidimensional fiber is still an open problem. 
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Yu. S. Ilyashenko; I. S. Shilin. Relatively unstable attractors. Informatics and Automation, Mathematical control theory and differential equations, Tome 277 (2012), pp. 91-100. http://geodesic.mathdoc.fr/item/TRSPY_2012_277_a6/

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