info = 3??

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info = 3??

Postby Peterpierre » Tue Aug 12, 2008 2:15 am

hi, why do I get this error if I have the same number unstable eigenvalues than forward looking variables? what does info=3 mean?
Thanks!!


There are 14 eigenvalue(s) larger than 1 in modulus
for 14 forward-looking variable(s)

The rank conditions ISN'T verified!


info =

3
Peterpierre
 
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Re: info = 3??

Postby StephaneAdjemian » Mon Sep 01, 2008 2:13 pm

Hi,

# unstable eigenvalues == # forward looking variables

is not a necessary and sufficient condition for a unique stable solution. You also need to satisfy a rank condition. Look at slides page 13.

Blanchard & Kahn assume that the rank condition is satisfied (just before proposition 1 page 1308)

Best,
Stéphane.
Stéphane Adjemian
Université du Maine, GAINS and DynareTeam
https://stepan.adjemian.eu
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