dynamic issue

GAMS
1

Hi,

I have the following problem. I´m setting a very simple dynamic system that basically consist of few equations and endogenous variables.


sets t time /1*10/

EQgi(t)… gi(t) =E= g0 ;

EQk(t)… k(t)=E= ir(t) + k(t-1) ;

EQir(t)… ir(t) =E= k(t-1)*gi(t) ;

The problem is that I need to set the initial k(t-1) (k(0) in this example), but this value is outside the specified set. How Can I solve this specific problem? All suggestions are welcome.

Best,

Gabriel

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2

Hi Gabriel



The capital stock in the first period is given (so I assume), so you write the equation as follows:



EQk(t+1)… k(t+1) =E= ir(t+1) + k(t);

K.FX(„1“) = k0;



Same for the next equation.







Cheers

Renger

Modelworks

Gewerbestrasse 16

3600 Thun – Switzerland

+41 79 818 53 73

Info@modelworks.ch







From: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] On Behalf Of Gabriel
Sent: Thursday, September 4, 2014 12:24 AM
To: gamsworld@googlegroups.com
Subject: dynamic issue



Hi,



I have the following problem. I´m setting a very simple dynamic system that basically consist of few equations and endogenous variables.





sets t time /1*10/



EQgi(t)… gi(t) =E= g0 ;



EQk(t)… k(t)=E= ir(t) + k(t-1) ;



EQir(t)… ir(t) =E= k(t-1)*gi(t) ;



The problem is that I need to set the initial k(t-1) (k(0) in this example), but this value is outside the specified set. How Can I solve this specific problem? All suggestions are welcome.



Best,



Gabriel

–
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3

Dear Renger,

Problem Solved. You cant imagine how much you help me. I didn´t realize that I must include the +1 in the EQk(t)…

Thank you buddy

Best,

Gabriel



On Wednesday, September 3, 2014 7:24:18 PM UTC-3, Gabriel wrote:

Hi,

I have the following problem. I´m setting a very simple dynamic system that basically consist of few equations and endogenous variables.


sets t time /1*10/

EQgi(t)… gi(t) =E= g0 ;

EQk(t)… k(t)=E= ir(t) + k(t-1) ;

EQir(t)… ir(t) =E= k(t-1)*gi(t) ;

The problem is that I need to set the initial k(t-1) (k(0) in this example), but this value is outside the specified set. How Can I solve this specific problem? All suggestions are welcome.

Best,

Gabriel

–
To unsubscribe from this group and stop receiving emails from it, send an email to gamsworld+unsubscribe@googlegroups.com.
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For more options, visit https://groups.google.com/d/optout.