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GAMS/PATH User Guide Version 4.3

GAMS/PATH User Guide Version 4.3

GAMS/PATH User Guide Version 4.3

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Contents<br />

1 Complementarity 3<br />

1.1 Transportation Problem . . . . . . . . . . . . . . . . . . . . . 4<br />

1.1.1 <strong>GAMS</strong> Code . . . . . . . . . . . . . . . . . . . . . . . . 7<br />

1.1.2 E xtension: Model Generalization . . . . . . . . . . . . 7<br />

1.1.3 Nonlinear Complementarity Problem . . . . . . . . . . 8<br />

1.2 Walrasian Equilibrium . . . . . . . . . . . . . . . . . . . . . . 8<br />

1.2.1 <strong>GAMS</strong> Code . . . . . . . . . . . . . . . . . . . . . . . . 9<br />

1.2.2 E xtension: Intermediate Variables . . . . . . . . . . . . 9<br />

1.2.3 Mixed Complementarity Problem . . . . . . . . . . . . 11<br />

1.3 Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />

1.3.1 Listing File . . . . . . . . . . . . . . . . . . . . . . . . 14<br />

1.3.2 Redefined E quations . . . . . . . . . . . . . . . . . . . 16<br />

1.4 Pitfalls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />

2 <strong>PATH</strong> 20<br />

2.1 Log File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21<br />

2.1.1 Diagnostic Information . . . . . . . . . . . . . . . . . . 24<br />

2.1.2 Crash Log . . . . . . . . . . . . . . . . . . . . . . . . . 24<br />

2.1.3 Major Iteration Log . . . . . . . . . . . . . . . . . . . . 24<br />

2.1.4 Minor Iteration Log . . . . . . . . . . . . . . . . . . . . 25<br />

2.1.5 Restart Log . . . . . . . . . . . . . . . . . . . . . . . . 26<br />

2.1.6 Solution Log . . . . . . . . . . . . . . . . . . . . . . . . 27<br />

2.2 Status File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27<br />

2.3 <strong>User</strong> Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 28<br />

2.4 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28<br />

2.5 <strong>PATH</strong>C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32<br />

2.5.1 Preprocessing . . . . . . . . . . . . . . . . . . . . . . . 33<br />

2.5.2 Constrained Nonlinear Systems . . . . . . . . . . . . . 33<br />

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