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OLIGOPOLY: A market structure dominated by a small number of large firms, selling either identical or differentiated products, and significant barriers to entry into the industry. This is one of four basic market structures. The other three are perfect competition, monopoly, and monopolistic competition.

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TOTAL VARIABLE COST AND MARGINAL COST

A mathematical connection between marginal cost and total variable cost stating that marginal cost IS the slope of the total variable cost curve. This relation between total variable cost and marginal cost is also seen with total cost. The slope of the total cost curve is marginal cost, as well. The relation between total variable cost and marginal cost is but another in the long line of applications of the total-marginal relation.

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APLS

RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time at a dollar discount store trying to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for defective microphones.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"The way employees treat customers reflects the manner in which they're treated by management. "

-- James Perkins, president, Cornell University

BJE
Bell Journal of Economics
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