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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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AGGREGATE SUPPLY INCREASE, SHORT-RUN AGGREGATE MARKET

A shock to the short-run aggregate market caused by an increase in aggregate supply, resulting in and illustrated by a rightward shift of the short-run aggregate supply curve. An increase in aggregate supply in the short-run aggregate market results in a decrease in the price level and an increase in real production. The level of real production resulting from the shock can be greater or less than full-employment real production.

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Today, you are likely to spend a great deal of time at a crowded estate auction seeking to buy either a coffee cup commemorating yesterday or a replacement remote control for your television. Be on the lookout for pencil sharpeners with an attitude.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
"I think luck is the sense to recognize an opportunity and the ability to take advantage of it . The man who can smile at his breaks and grabs his chance gets on."

-- Samuel Goldwyn, Film executive

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