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  2. Integer programming - Wikipedia

    en.wikipedia.org/wiki/Integer_programming

    These algorithms can also be used for mixed integer linear programs (MILP) - programs in which some variables are integer and some variables are real. [23] The original algorithm of Lenstra [ 14 ] : Sec.5 has run-time 2 O ( n 3 ) ⋅ p o l y ( d , L ) {\displaystyle 2^{O(n^{3})}\cdot poly(d,L)} , where n is the number of integer variables, d is ...

  3. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    A binary clock might use LEDs to express binary values. In this clock, each column of LEDs shows a binary-coded decimal numeral of the traditional sexagesimal time.. The common names are derived somewhat arbitrarily from a mix of Latin and Greek, in some cases including roots from both languages within a single name. [27]

  4. Presburger arithmetic - Wikipedia

    en.wikipedia.org/wiki/Presburger_arithmetic

    Presburger arithmetic is the first-order theory of the natural numbers with addition, named in honor of Mojżesz Presburger, who introduced it in 1929.The signature of Presburger arithmetic contains only the addition operation and equality, omitting the multiplication operation entirely.

  5. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A mixed number (also called a mixed fraction or mixed numeral) is the sum of a non-zero integer and a proper fraction, conventionally written by juxtaposition (or concatenation) of the two parts, without the use of an intermediate plus (+) or minus (−) sign. When the fraction is written horizontally, a space is added between the integer and ...

  6. Special ordered set - Wikipedia

    en.wikipedia.org/wiki/Special_ordered_set

    In discrete optimization, a special ordered set (SOS) is an ordered set of variables used as an additional way to specify integrality conditions in an optimization model. . Special order sets are basically a device or tool used in branch and bound methods for branching on sets of variables, rather than individual variables, as in ordinary mixed integer programm

  7. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    Canonical representation of a positive integer – Representation of a number as a product of primes; Countable set – Mathematical set that can be enumerated; Sequence – Function of the natural numbers in another set; Ordinal number – Generalization of "n-th" to infinite cases; Cardinal number – Size of a possibly infinite set