enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Enumeration - Wikipedia

    en.wikipedia.org/wiki/Enumeration

    However, these definitions characterize distinct classes since there are uncountably many subsets of the natural numbers that can be enumerated by an arbitrary function with domain ω and only countably many computable functions. A specific example of a set with an enumeration but not a computable enumeration is the complement of the halting set.

  3. Enumeration algorithm - Wikipedia

    en.wikipedia.org/wiki/Enumeration_algorithm

    Enumeration problems have been studied in the context of computational complexity theory, and several complexity classes have been introduced for such problems.. A very general such class is EnumP, [1] the class of problems for which the correctness of a possible output can be checked in polynomial time in the input and output.

  4. Enumerated type - Wikipedia

    en.wikipedia.org/wiki/Enumerated_type

    In computer programming, an enumerated type (also called enumeration, enum, or factor in the R programming language, and a categorical variable in statistics) is a data type consisting of a set of named values called elements, members, enumeral, or enumerators of the type.

  5. Enumerative combinatorics - Wikipedia

    en.wikipedia.org/wiki/Enumerative_combinatorics

    Two examples of this type of problem are counting combinations and counting permutations. More generally, given an infinite collection of finite sets S i indexed by the natural numbers, enumerative combinatorics seeks to describe a counting function which counts the number of objects in S n for each n.

  6. Function (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Function_(mathematics)

    For example, when extending the domain of the square root function, along a path of complex numbers with positive imaginary parts, one gets i for the square root of −1; while, when extending through complex numbers with negative imaginary parts, one gets −i. There are generally two ways of solving the problem.

  7. Enumerate - Wikipedia

    en.wikipedia.org/wiki/Enumerate

    Enumerate could refer to: Enumeration, a mathematical, theoretical concept of an exhaustive listing of compatible items; Enumerate (project), a collaborative research ...

  8. Functional programming - Wikipedia

    en.wikipedia.org/wiki/Functional_programming

    For example, the function, mother(X) = Y, (every X has only one mother Y) can be represented by the relation mother(X, Y). Whereas functions have a strict input-output pattern of arguments, relations can be queried with any pattern of inputs and outputs. Consider the following logic program:

  9. Data type - Wikipedia

    en.wikipedia.org/wiki/Data_type

    For example, Java's numeric types are primitive, while classes are user-defined. A value of an atomic type is a single data item that cannot be broken into component parts. A value of a composite type or aggregate type is a collection of data items that can be accessed individually. [6]