Hessian Matrix at posterior mode

Hi all

I would to know how Dynare compute the inverse of the Hessian evaluted at the posterior mode?
I mean how Dynare approximate the elements of Hessian matrix?
Thank you so much
With best regards

What exactly do you want to know? It uses a finite difference approximation following Abramowitz and Stegun (1965) formulas 25.3.23. See https://github.com/DynareTeam/dynare/blob/master/matlab/hessian.m
mode_compute=5 and 6 work differently. See Hessian computation

Dear Prof @jpfeifer

Yes, it is exactly I would like to know
Thank you so much indeed for that

With best regards