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# Meaning of predating Sexychats 24 com Enumerative definitions are only possible for finite sets and only practical for relatively small sets.

Divisio and partitio are classical terms for definitions. A divisio is not an extensional definition, but an exhaustive list of subsets of a set, in the sense that every member of the "divided" set is a member of one of the subsets.

Definitions can be classified into two large categories, intensional definitions (which try to give the essence of a term) and extensional definitions (which proceed by listing the objects that a term describes).

Another important category of definitions is the class of ostensive definitions, which convey the meaning of a term by pointing out examples.

An extreme form of divisio lists all sets whose only member is a member of the "divided" set.

The difference between this and an extensional definition is that extensional definitions list members, and not subsets.  In the definition "An elephant is a large gray animal native to Asia and Africa", the word "elephant" is the definiendum, and everything after the word "is" is the definiens.In classical thought, a definition was taken to be a statement of the essence of a thing.Aristotle had it that an object's essential attributes form its "essential nature", and that a definition of the object must include these essential attributes.Definitions and axioms are the basis on which all of modern mathematics is constructed.In modern usage, a definition is something, typically expressed in words, that attaches a meaning to a word or group of words.A genus–differentia definition is a type of intensional definition that takes a large category (the genus) and narrows it down to a smaller category by a distinguishing characteristic (i.e. Those definitions can be expressed as a genus ("a plane figure") and two differentiae ("that has three straight bounding sides" and "that has four straight bounding sides", respectively).It is possible to have two different genus-differentia definitions that describe the same term, especially when the term describes the overlap of two large categories.The amount of money a company has on hand, or will have, in a given year.Working capital is calculated by subtracting current liabilities from current assets.For instance, both of these genus-differentia definitions of "square" are equally acceptable: Thus, a "square" is a member of both the genus "rectangle" and the genus "rhombus".One important form of the extensional definition is ostensive definition.

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