Jacobian matrix with infinite or not real elements

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Jacobian matrix with infinite or not real elements

Postby alef87 » Tue Jun 26, 2012 2:12 pm

Hi to everyone,
I am trying to run sum simulations of a log-linearized model on dynare but unfortunately I always get the same error message: "error: The Jacobian matrix evaluated at the steady state contains elements that are not real or are infinite".
I attach a copy of the mod-file.
Is anyone able to give me the reason?
Attachments
ppp.mod
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alef87
 
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Re: Jacobian matrix with infinite or not real elements

Postby jpfeifer » Fri Jun 29, 2012 2:17 pm

Given your parametrization, your second expression
Code: Select all
psi=(((1-gamma)*gamma*(beta)^(2))/(gamma*(gamma*beta*SIGMABAR)^(2)-(1-SIGMABAR)^(2)))^(1/2)

evaluates to a complex number.
------------
Johannes Pfeifer
University of Cologne
https://sites.google.com/site/pfeiferecon/
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