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Sensitivity to switching rates in stochastically switched ODEs

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Date
2014-01-01
Authors
Lawley, Sean D
Mattingly, Jonathan C
Reed, Michael C
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Abstract
We consider a stochastic process driven by a linear ordinary differential equation whose right-hand side switches at exponential times between a collection of different matrices. We construct planar examples that switch between two matrices where the individual matrices and the average of the two matrices are all Hurwitz (all eigenvalues have strictly negative real part), but nonetheless the process goes to infinity at large time for certain values of the switching rate. We further construct examples in higher dimensions where again the two individual matrices and their averages are all Hurwitz, but the process has arbitrarily many transitions between going to zero and going to infinity at large time as the switching rate varies. In order to construct these examples, we first prove in general that if each of the individual matrices is Hurwitz, then the process goes to zero at large time for sufficiently slow switching rate and if the average matrix is Hurwitz, then the process goes to zero at large time for sufficiently fast switching rate. We also give simple conditions that ensure the process goes to zero at large time for all switching rates. © 2014 International Press.
Type
Journal article
Permalink
https://hdl.handle.net/10161/9515
Published Version (Please cite this version)
10.4310/CMS.2014.v12.n7.a9
Publication Info
Lawley, Sean D; Mattingly, Jonathan C; & Reed, Michael C (2014). Sensitivity to switching rates in stochastically switched ODEs. Communications in Mathematical Sciences, 12(7). pp. 1343-1352. 10.4310/CMS.2014.v12.n7.a9. Retrieved from https://hdl.handle.net/10161/9515.
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Scholars@Duke

Mattingly

Jonathan Christopher Mattingly

Kimberly J. Jenkins Distinguished University Professor of New Technologies
Jonathan Christopher  Mattingly grew up in Charlotte, NC where he attended Irwin Ave elementary and Charlotte Country Day.  He graduated from the NC School of Science and Mathematics and received a BS is Applied Mathematics with a concentration in physics from Yale University. After two years abroad with a year spent at ENS Lyon studying nonlinear and statistical physics on a Rotary Fellowship, he returned to the US to attend Princeton University where he obtained a PhD in Applied and
Reed

Michael C. Reed

Arts & Sciences Distinguished Professor of Mathematics
Professor Reed is engaged in a large number of research projects that involve the application of mathematics to questions in physiology and medicine. He also works on questions in analysis that are stimulated by biological questions. For recent work on cell metabolism and public health, go to sites@duke.edu/metabolism. Since 2003, Professor Reed has worked with Professor Fred Nijhout (Duke Biology) to use mathematical methods to understan
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