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  2. Perfect competition - Wikipedia

    en.wikipedia.org/wiki/Perfect_competition

    In a perfectly competitive market, the demand curve facing a firm is perfectly elastic. As mentioned above, the perfect competition model, if interpreted as applying also to short-period or very-short-period behaviour, is approximated only by markets of homogeneous products produced and purchased by very many sellers and buyers, usually ...

  3. Market structure - Wikipedia

    en.wikipedia.org/wiki/Market_structure

    The total surplus of perfect competition market is the highest. And the total surplus of imperfect competition market is lower. In the monopoly market, if the monopoly firm can adopt first-level price discrimination, the consumer surplus is zero and the monopoly firm obtains all the benefits in the market. [15]

  4. Perfect information - Wikipedia

    en.wikipedia.org/wiki/Perfect_information

    Chess is an example of a game of perfect information. In economics, perfect information (sometimes referred to as "no hidden information") is a feature of perfect competition. With perfect information in a market, all consumers and producers have complete and instantaneous knowledge of all market prices, their own utility, and own cost functions.

  5. Stock market timing: What it is and why it’s so hard to do

    www.aol.com/finance/trying-time-stock-market...

    An investor with perfect market timing: $151,391. An investor who immediately invested their money: $135,471. An investor who performed dollar-cost averaging: $134,856.

  6. Fundamental theorems of welfare economics - Wikipedia

    en.wikipedia.org/wiki/Fundamental_theorems_of...

    For phenomena of type I [i.e. perfect competition], when equilibrium takes place at a point of tangency of indifference curves, the members of the collectivity enjoy a maximum of ophelimity. He adds that 'a rigorous proof cannot be given without the help of mathematics' and refers to his Appendix. [14]

  7. Market economy - Wikipedia

    en.wikipedia.org/wiki/Market_economy

    A market economy is an economic system in which the ... as a classical liberal ideal to ... particularly the assumption of perfect and costless information and ...

  8. Capital structure - Wikipedia

    en.wikipedia.org/wiki/Capital_structure

    The Miller and Modigliani theorem argues that the market value of a firm is unaffected by a change in its capital structure. This school of thought is generally viewed as a purely theoretical result, since it assumes a perfect market and disregards factors such as fluctuations and uncertain situations that may arise in financing a firm.

  9. Market power - Wikipedia

    en.wikipedia.org/wiki/Market_power

    In other words, market power occurs if a firm does not face a perfectly elastic demand curve and can set its price (P) above marginal cost (MC) without losing revenue. [2] This indicates that the magnitude of market power is associated with the gap between P and MC at a firm's profit maximising level of output.