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HERFINDAHL-HIRSHMAN INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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INELASTIC DEMAND

The general elasticity relation in which relatively large changes in price cause relatively small changes in quantity demanded. Large changes in price cause relatively small changes in quantity demanded or the percentage change in quantity demanded is smaller than the percentage change in price. This characterization of elasticity is most important for the price elasticity of demand. Inelastic demand is one of two general elasticity relations for demand. The other is elastic demand.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for jovial bank tellers.
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More money is spent on gardening than on any other hobby.
"No task is a long one but the task on which one dare not start: It becomes a nightmare. "

-- Charles Baudelaire, poet-critic

WPO
Weakly Pareto Optimal
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