
In economics, a model is a theoretical construct representing economic processes by a set of variables and a set of logical and/or quantitative relationships between them. The economic model is a simplified framework designed to illustrate complex processes, often but not always using mathematical techniques. Frequently, economic models posit stru...
Found on
http://en.wikipedia.org/wiki/Economic_model

A collection of assumptions, often expressed as equations relating variables, from which inferences can be derived about economic behavior and performance.
Found on
http://www-personal.umich.edu/~alandear/glossary/e.html

(from the article `economic growth`) In addition to the theories discussed above, a large body of literature has developed involving abstract mathematical models. Because this field of ... Other methods of planning that have in varying degree replaced the method of balances include mathematical model making and cost–benefit analysi...
Found on
http://www.britannica.com/eb/a-z/e/9
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