[Coin-ipopt] (no subject)

Carl Damon Laird claird at andrew.cmu.edu
Thu Feb 2 14:28:37 EST 2006


Hi Jens,

This matrix is eventually passed on to MA27 and MA27 takes the sum of the 
values. We use this in the new version to add additional terms to the 
Hessian (like Sigma and perturbations).

Hope this helps,

Carl.


On Thu, 2 Feb 2006, Jens Pettersson wrote:

> Hi,
>
> I have a question on the old Fortran version. What happens if multiple
> entries of the contribution from a variable to the Hessian is included in
> the specification of the Hessian (e.g. from different equations).
>
> Will only one of them be picked or are they summed together??
>
>
>
> BR
>
> //Jens
>
>



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