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Substitute goods are commodity which the consumer demanded to be used in place of another good. Economic theory describes two goods as being close substitutes if three conditions hold: [3] products have the same or similar performance characteristics; products have the same or similar occasion for use and; products are sold in the same ...
In auction theory and competitive equilibrium theory, a valuation function is said to have the gross substitutes (GS) property if for all pairs of commodities: () (). I.e., the definition includes both substitute goods and independent goods , and only rules out complementary goods .
In economics, gross substitutes (GS) is a class of utility functions on indivisible goods.An agent is said to have a GS valuation if, whenever the prices of some items increase and the prices of other items remain constant, the agent's demand for the items whose price remain constant weakly increases.
An equivalent definition is: for any sets of items and , + = + (). An additive utility function is characteristic of independent goods. For example, an apple and a hat are considered independent: the utility a person receives from having an apple is the same whether or not he has a hat, and vice versa.
Constant elasticity of substitution (CES) is a common specification of many production functions and utility functions in neoclassical economics.CES holds that the ability to substitute one input factor with another (for example labour with capital) to maintain the same level of production stays constant over different production levels.
This definition is also known as the direct elasticity of substitution. The other economist was Joan Robinson, who defined elasticity of substitution as the change in proportion of the ratio of the number of factors used divided by the change in proportion of the ratio of each factor's prices. These two definitions function in the same way when ...
Sour cream is another milk substitute similar to yogurt, and it even has the added benefit of tenderizing baked goods (like cake, muffins or quick breads). Keep in mind, though, that it will add a ...
Under the standard assumption of neoclassical economics that goods and services are continuously divisible, the marginal rates of substitution will be the same regardless of the direction of exchange, and will correspond to the slope of an indifference curve (more precisely, to the slope multiplied by −1) passing through the consumption bundle in question, at that point: mathematically, it ...