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Re: Modelling Delay-Differential Equations

  • To: mathgroup at
  • Subject: [mg17272] Re: Modelling Delay-Differential Equations
  • From: "Bill Bertram" <wkb at>
  • Date: Fri, 30 Apr 1999 02:34:50 -0400
  • Organization: Australian Nuclear Science and Technology Organisation
  • References: <7g0srs$>
  • Sender: owner-wri-mathgroup at

Andrew J. Paul wrote in message <7g0srs$dvg at>...
>Mathematica is a useful tool for analyzing coupled ordinary differential
>equations (e.g., phase plots, stability analysis, etc.); however, does
>anyone know of an elegant way to analyze delay-differential equations
>using Mathematica?  Numerical techniques require using a ringbuffer to
>store past values.  I am not aware of a built-in function do this in
>Mathematica; having to create a ringbuffer array manually may preclude
>the benefits of using Mathematica over other numerical integration

Hi Andrew,

I don't know how useful this is, but there is a  package in
Mathsource/Enhancements/Numerical entitled NDelayDSolve.m which solves
numerically delay differential equations.


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