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  2. Set theory - Wikipedia

    en.wikipedia.org/wiki/Set_theory

    Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory — as a branch of mathematics — is mostly concerned with those that are relevant to mathematics as a whole. The modern study of set theory was ...

  3. Economic system - Wikipedia

    en.wikipedia.org/wiki/Economic_system

    An economic system, or economic order, [1] is a system of production, resource allocation and distribution of goods and services within a society. It includes the combination of the various institutions, agencies, entities, decision-making processes, and patterns of consumption that comprise the economic structure of a given community.

  4. Economic order quantity - Wikipedia

    en.wikipedia.org/wiki/Economic_order_quantity

    Economic order quantity. Economic order quantity (EOQ), also known as financial purchase quantity or economic buying quantity, [citation needed] is the order quantity that minimizes the total holding costs and ordering costs in inventory management. It is one of the oldest classical production scheduling models.

  5. Economic model - Wikipedia

    en.wikipedia.org/wiki/Economic_model

    v. t. e. An economic model is a theoretical construct representing economic processes by a set of variables and a set of logical and/or quantitative relationships between them. The economic model is a simplified, often mathematical, framework designed to illustrate complex processes. Frequently, economic models posit structural parameters. [1]

  6. Free market - Wikipedia

    en.wikipedia.org/wiki/Free_market

    e. In economics, a free market is an economic system in which the prices of goods and services are determined by supply and demand expressed by sellers and buyers. Such markets, as modeled, operate without the intervention of government or any other external authority. Proponents of the free market as a normative ideal contrast it with a ...

  7. Order theory - Wikipedia

    en.wikipedia.org/wiki/Order_theory

    Order theory. Order theory is a branch of mathematics that investigates the intuitive notion of order using binary relations. It provides a formal framework for describing statements such as "this is less than that" or "this precedes that". This article introduces the field and provides basic definitions.

  8. Economics - Wikipedia

    en.wikipedia.org/wiki/Economics

    t. e. Economics (/ ˌɛkəˈnɒmɪks, ˌiːkə -/) [1][2] is a social science that studies the production, distribution, and consumption of goods and services. [3][4] Economics focuses on the behaviour and interactions of economic agents and how economies work.

  9. First-order logic - Wikipedia

    en.wikipedia.org/wiki/First-order_logic

    A theory about a topic, such as set theory, a theory for groups, [3] or a formal theory of arithmetic, is usually a first-order logic together with a specified domain of discourse (over which the quantified variables range), finitely many functions from that domain to itself, finitely many predicates defined on that domain, and a set of axioms ...