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  2. Zipping (computer science) - Wikipedia

    en.wikipedia.org/wiki/Zipping_(computer_science)

    Given the three words cat, fish and be where |cat| is 3, |fish| is 4 and |be| is 2.Let denote the length of the longest word which is fish; =.The zip of cat, fish, be is then 4 tuples of elements:

  3. Fish curve - Wikipedia

    en.wikipedia.org/wiki/Fish_curve

    The fish curve with scale parameter a = 1. A fish curve is an ellipse negative pedal curve that is shaped like a fish. In a fish curve, the pedal point is at the focus for the special case of the squared eccentricity =. [1] The parametric equations for a fish curve correspond to those of the associated ellipse.

  4. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    Dirac delta function: everywhere zero except for x = 0; total integral is 1. Not a function but a distribution, but sometimes informally referred to as a function, particularly by physicists and engineers. Dirichlet function: is an indicator function that matches 1 to rational numbers and 0 to irrationals. It is nowhere continuous.

  5. Functional (mathematics) - Wikipedia

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

    [2] [3] In functional analysis, the term linear functional is a synonym of linear form; [3] [4] [5] that is, it is a scalar-valued linear map. Depending on the author, such mappings may or may not be assumed to be linear, or to be defined on the whole space X . {\displaystyle X.} [ citation needed ]

  6. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    1. If y is a variable that depends on x, then , read as "d y over d x" (commonly shortened to "d y d x"), is the derivative of y with respect to x. 2. If f is a function of a single variable x, then is the derivative of f, and is the value of the derivative at a. 3. Total derivative: If (, …,) is a function of several variables that depend on ...

  7. Fox–Wright function - Wikipedia

    en.wikipedia.org/wiki/Fox–Wright_function

    The entire function , is often called the Wright function. [2] It is the special case of […] of the Fox–Wright function. Its series representation is , = =! (+), >This function is used extensively in fractional calculus and the stable count distribution.

  8. Pentagonal number theorem - Wikipedia

    en.wikipedia.org/wiki/Pentagonal_number_theorem

    In summary, it has been shown that partitions into an even number of distinct parts and an odd number of distinct parts exactly cancel each other, producing null terms 0x n, except if n is a generalized pentagonal number = = /, in which case there is exactly one Ferrers diagram left over, producing a term (−1) k x n. But this is precisely ...

  9. CYK algorithm - Wikipedia

    en.wikipedia.org/wiki/CYK_algorithm

    For readability, the CYK table for P is represented here as a 2-dimensional matrix M containing a set of non-terminal symbols, such that R k is in ⁠ [,] ⁠ if, and only if, ⁠ [,,] ⁠. In the above example, since a start symbol S is in ⁠ M [ 7 , 1 ] {\displaystyle M[7,1]} ⁠ , the sentence can be generated by the grammar.