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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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COMMON-PROPERTY GOODS Goods characterized by rival consumption and the inability to exclude nonpayers. Common-property goods are one of four types of goods differentiated by consumption rivalry and nonpayer excludability. The other three goods are private (rival consumption and nonpayers can be excluded), public (nonrival consumption and nonpayers cannot be excluded), and near-public (nonrival consumption and nonpayers can be excluded). Nonrival consumption and the ease of excluding of nonpayers means common-property goods cannot be efficiently exchanged through markets and are often overconsumed.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time lost in your local discount super center seeking to buy either a rechargeable battery for your camera or a coffee cup commemorating the first day of spring. Be on the lookout for a thesaurus filled with typos.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
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"He who has a „why¾ to live can bear with almost any „how."" -- Friedrich Nietzsche, Philosopher
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SEC
Securities and Exchange Commision
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