Qualitative Impact Analysis through Sign-Solvability: A Review

J S Maybee and H Voogd
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J S Maybee: Department of Mathematics, University of Colorado at Boulder, CO 80309, USA
H Voogd: Department of Civil Engineering, University of Technology, POB 5048 Delft, The Netherlands

Environment and Planning B, 1984, vol. 11, issue 4, 365-376

Abstract: In this paper some aspects of the theory of qualitative calculus are addressed, namely, those aspects dealing with qualitatively determinate relationships. A review is given of major literature which deals with the problem of determining the direction of change of the endogeneous variables of a model, given the direction of change of the exogenous variables and in addition a knowledge of the signs of the partial derivatives of the corresponding system of equations (sign-solvability problem). In addition, some recent developments are outlined and a number of implementation issues and potential areas of application are briefly discussed.

Date: 1984
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Persistent link: https://EconPapers.repec.org/RePEc:sae:envirb:v:11:y:1984:i:4:p:365-376

DOI: 10.1068/b110365

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