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Re: DDE solvers / How to set HISTORY

From: Maurizio De Pittà
Subject: Re: DDE solvers / How to set HISTORY
Date: Sat, 19 Jan 2019 23:22:07 +0100

Hi Sergei,
unfortunately not. There is no specification of HISTORY as matrix in the MATLAB equivalent:

This is why the matrix specification is hard to figure out, for me at least.


On Sat, Jan 19, 2019 at 10:58 PM Sergei Steshenko <address@hidden> wrote:

On Saturday, January 19, 2019, 11:32:28 PM GMT+2, Maurizio De Pittà <address@hidden> wrote:

Dear all,
I am troubled by the DDE solvers in octave. My question follows this question that sadly remained without answer:

In particular, I cannot understand what is the "matrix" that I need to provide as HISTORY in the input argument of any of the octave/dde-solvers -- i.e. any of the odeXXd solvers in the odepkg. There is no explanation on the specifics of this matrix and why it seems to be required to be of size n_var * n_delay. This is very different from MATLAB implementations. Any insight would be helpful.

Thanks in advance.


I don't have an answer, but maybe Matlab documentation is more clear on the issue. I haven't read either documentation on the issue.


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