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JOURNALS // Regular and Chaotic Dynamics // Archive

Regul. Chaotic Dyn., 2025 Volume 30, Issue 2, Pages 155–173 (Mi rcd1302)

Scientific Heritage of L.P. Shilnikov. Part II. Homoclinic Chaos

Sergey V. Gonchenkoab, Lev M. Lermanab, Andrey L. Shilnikovc, Dmitry V. Turaevd

a National Research University Higher School of Economics, ul. Bolshaya Pecherskaya 25/12, 603155 Nizhny Novgorod, Russia
b Lobachevsky State University, pr. Gagarina 23, 603950 Nizhny Novgorod, Russia
c Neuroscience Institute and Department of Mathematics and Statistics, Georgia State University, 30303 Atlanta, USA
d Imperial College, SW7 2AZ London, UK

Abstract: We review the works initiated and developed by L.P. Shilnikov on homoclinic chaos, highlighting his fundamental contributions to Poincaré homoclinics to periodic orbits and invariant tori. Additionally, we discuss his related findings in non-autonomous and infinitedimensional systems. This survey continues our earlier review [1], where we examined Shilnikov's groundbreaking results on bifurcations of homoclinic orbits — his extension of the classical work by A.A. Andronov and E.A. Leontovich from planar to multidimensional autonomous systems, as well as his pioneering discoveries on saddle-focus loops and spiral chaos.

Keywords: saddle periodic orbit, Poincaré homoclinic orbit, hyperbolic set, symbolic dynamics, nonautonomous system, integral curve, exponential dichotomy, Banach space

MSC: 37C29, 37C60, 35A24

Received: 05.02.2025
Accepted: 10.03.2025

Language: English

DOI: 10.1134/S1560354725020017



© Steklov Math. Inst. of RAS, 2025