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  2. Enumerative combinatorics - Wikipedia

    en.wikipedia.org/wiki/Enumerative_combinatorics

    The above operations can now be used to enumerate common combinatorial objects including trees (binary and plane), Dyck paths and cycles. A combinatorial structure is composed of atoms. For example, with trees the atoms would be the nodes. The atoms which compose the object can either be labeled or unlabeled.

  3. Enumeration - Wikipedia

    en.wikipedia.org/wiki/Enumeration

    When an enumeration is used in an ordered list context, we impose some sort of ordering structure requirement on the index set. While we can make the requirements on the ordering quite lax in order to allow for great generality, the most natural and common prerequisite is that the index set be well-ordered. According to this characterization ...

  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. Enumeration algorithm - Wikipedia

    en.wikipedia.org/wiki/Enumeration_algorithm

    The vertex enumeration problem, where we are given a polytope described as a system of linear inequalities and we must enumerate the vertices of the polytope. Enumerating the minimal transversals of a hypergraph. This problem is related to monotone dualization and is connected to many applications in database theory and graph theory. [3]

  6. Computably enumerable set - Wikipedia

    en.wikipedia.org/wiki/Computably_enumerable_set

    That means that its output is a list of all the members of S: s 1, s 2, s 3, ... . If S is infinite, this algorithm will run forever, but each element of S will be returned after a finite amount of time. Note that these elements do not have to be listed in a particular way, say from smallest to largest.

  7. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    What Are Today’s NYT Strands Answers, Word List for Wednesday, January 22? BRAVE. CARS. ONWARD. SOUL. ELEMENTAL. RATATOUILLE. ANIMATION (SPANGRAM) Up Next:

  8. Comparison of real-time operating systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_real-time...

    This is a list of real-time operating systems (RTOSs). This is an operating system in which the time taken to process an input stimulus is less than the time lapsed until the next input stimulus of the same type.

  9. Play Hearts Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/hearts

    Enjoy a classic game of Hearts and watch out for the Queen of Spades!