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The structure of the input–output model has been incorporated into national accounting in many developed countries, and as such can be used to calculate important measures such as national GDP. Input–output economics has been used to study regional economies within a nation, and as a tool for national and regional economic planning.
The Keynesian cross diagram is a formulation of the central ideas in Keynes' General Theory of Employment, Interest and Money.It first appeared as a central component of macroeconomic theory as it was taught by Paul Samuelson in his textbook, Economics: An Introductory Analysis.
The consequence of this is that in equilibrium, each firm's expectations of how other firms will act are shown to be correct; when all is revealed, no firm wants to change its output decision. [1] This idea of stability was later taken up and built upon as a description of Nash equilibria , of which Cournot equilibria are a subset.
An economic 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, often mathematical, framework designed to illustrate complex processes.
In the case of two goods and two individuals, the contract curve can be found as follows. Here refers to the final amount of good 2 allocated to person 1, etc., and refer to the final levels of utility experienced by person 1 and person 2 respectively, refers to the level of utility that person 2 would receive from the initial allocation without trading at all, and and refer to the fixed total ...
The firm which produces at this output level is said to maximize profits. If the output produced is less than the equilibrium quantity (), as shown in the red part, then is greater than (>), and the profit is not maximized. The firm has in its interest to raise its output level to maximize profits, because the revenue gained will be more than ...
This not only makes the formulas more concise and clear but also facilitates the use of analytical tools from linear algebra and matrix theory. The John von Neumann's general equilibrium model and the structural equilibrium model are examples of matrix-form CGE models, which can be viewed as generalizations of eigenequations.
The classical general equilibrium model aims to describe the economy by aggregating the behavior of individuals and firms. [1] Note that the classical general equilibrium model is unrelated to classical economics , and was instead developed within neoclassical economics beginning in the late 19th century.