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July 8, 2025 

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KINKED-DEMAND CURVE: A demand curve with two distinct segments with different elasticities that join to form a kink. The primary use of the kinked-demand curve is to explain price rigidity in oligopoly. The two segments are: (1) a relatively more elastic segment for price increases and (2) a relatively less elastic segment for price decreases. The relative elasticities of these two segments is directly based on the interdependent decision-making of oligopolistic firms.

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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

     See also | market power | monopoly | price | competitive market | price maker | price leadership | marginal-cost pricing | price-cost margin |


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BANK LIABILITIES

What a bank owes, including most notably customer deposits. Bank liabilities are typically listed on the right-hand side of a bank's balance sheet. Bank assets, what a bank owns, are listed on the left-hand side of a bank's balance sheet. Net worth is the difference between assets and liabilities. The most important liability category of most bank is checkable deposits, which is part of the economy's M1 money supply. The largest liability category includes other types of deposits (especially savings deposits, certificates of deposit, and money market deposits) that enter into the M2 and M3 monetary aggregates.

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Today, you are likely to spend a great deal of time looking for a downtown retail store wanting to buy either a flower arrangement for that special day for your mother or a New York Yankees baseball cap. Be on the lookout for attractive cable television service repair people.
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Post WWI induced hyperinflation in German in the early 1900s raised prices by 726 million times from 1918 to 1923.
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