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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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PERFECT COMPETITION, PROFIT MAXIMIZATION A perfectly competitive firm is presumed to produce the quantity of output that maximizes economic profit--the difference between total revenue and total cost. This production decision can be analyzed directly with economic profit, by identifying the greatest difference between total revenue and total cost, or by the equality between marginal revenue and marginal cost.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction wanting to buy either several orange mixing bowls or clothing for your pet dog. Be on the lookout for mail order catalogs with hidden messages.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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"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
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AOM
Australian Options Market
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