# American Institute of Mathematical Sciences

September  2019, 39(9): 5339-5363. doi: 10.3934/dcds.2019218

## Converse theorem on a global contraction metric for a periodic orbit

 Department of Mathematics, University of Sussex, Falmer BN1 9QH, United Kingdom

Received  October 2018 Revised  February 2019 Published  May 2019

Contraction analysis uses a local criterion to prove the long-term behaviour of a dynamical system. A contraction metric is a Riemannian metric with respect to which the distance between adjacent solutions contracts. If adjacent solutions in all directions perpendicular to the flow are contracted, then there exists a unique periodic orbit, which is exponentially stable and we obtain an upper bound on the rate of exponential attraction.

In this paper we study the converse question and show that, given an exponentially stable periodic orbit, a contraction metric exists on its basin of attraction and we can recover the upper bound on the rate of exponential attraction.

Citation: Peter Giesl. Converse theorem on a global contraction metric for a periodic orbit. Discrete & Continuous Dynamical Systems - A, 2019, 39 (9) : 5339-5363. doi: 10.3934/dcds.2019218
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##### References:
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