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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is 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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AUCTION

A formal market exchange in which prospective buyers make bids to purchase a commodity. An auction is an effective way of exchanging commodities by bringing together buyers and sellers. Auctions are commonly used to exchange financial instruments, agricultural commodities, personal assets, and works of art. Three notable types of auctions are English, Dutch, and sealed-bid.

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APLS

ORANGE REBELOON
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Today, you are likely to spend a great deal of time at a garage sale looking to buy either a green and yellow striped sweater vest or a Boston Red Sox baseball cap. Be on the lookout for the happiest person in the room.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"There is no passion to be found playing small ‚ in settling for a life that idles than the one you are capable of living."

-- Nelson Mandela

QJE
Quarterly Journal of Economics
A PEDestrian's Guide
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