• theory, a length function is a function that assigns a number to each element of a group. A length function L : G → R+ on a group G is a function satisfying:...
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  • Thumbnail for Arc length
    continuously differentiable (i.e., the derivative is a continuous function) function. The length of the curve is given by the formula L ( f ) = ∫ a b | f ′ (...
    29 KB (5,339 words) - 08:06, 22 May 2025
  • Thumbnail for Periodic function
    Often, "the" period of a function is used to mean its fundamental period. A function with period P will repeat on intervals of length P, and these intervals...
    12 KB (1,704 words) - 00:48, 17 March 2025
  • Thumbnail for Hash function
    there are some hash functions that support variable-length output. The values returned by a hash function are called hash values, hash codes, (hash/message)...
    50 KB (7,455 words) - 21:00, 27 May 2025
  • Thumbnail for Sine and cosine
    intensity and day length, and average temperature variations throughout the year. They can be traced to the jyā and koṭi-jyā functions used in Indian astronomy...
    55 KB (7,064 words) - 00:33, 30 May 2025
  • Thumbnail for String (computer science)
    the string. This function is often named length or len. For example, length("hello world") would return 11. Another common function is concatenation,...
    41 KB (5,027 words) - 16:16, 11 May 2025
  • particular, a simple reflection has length one. The function l is then an integer-valued function of W; it is a length function of W. It follows immediately...
    881 bytes (109 words) - 10:24, 24 January 2021
  • Thumbnail for Trigonometric functions
    mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are real functions which relate an angle of...
    77 KB (10,740 words) - 23:12, 14 June 2025
  • In computer programming, a pure function is a function that has the following properties: the function return values are identical for identical arguments...
    11 KB (1,233 words) - 06:55, 21 May 2025
  • distinguish the hard-core function value h(x) and uniformly random bits of length |h(x)| with negligible advantage over the length of x. A hard-core predicate...
    6 KB (859 words) - 23:41, 11 July 2024
  • element of the group) in terms of the length of that relation (see pp. 79–80 in ). The growth type of the Dehn function is a quasi-isometry invariant of a...
    29 KB (3,939 words) - 14:57, 3 May 2025
  • basic example of a string function is the length(string) function. This function returns the length of a string literal. e.g. length("hello world") would return...
    125 KB (4,077 words) - 12:50, 22 February 2025
  • analogous concept of the quantum coherence length of a wave function. In radio-band systems, the coherence length is approximated by L = c n Δ f ≈ λ 2 n Δ...
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  • Thumbnail for Rayleigh length
    In optics and especially laser science, the Rayleigh length or Rayleigh range, z R {\displaystyle z_{\mathrm {R} }} , is the distance along the propagation...
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  • C99 function allocates a variable-length array of a specified size, fills it with floating-point values, and then passes it to another function for processing...
    10 KB (1,184 words) - 03:43, 23 November 2024
  • Bit length or bit width is the number of binary digits, called bits, necessary to represent an unsigned integer as a binary number. Formally, the bit length...
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  • g\in G\mapsto \ell _{X}(g)} is called the hyperbolic length function or the translation length function for the action of G on X. For g ∈ G exactly one of...
    41 KB (5,901 words) - 16:04, 13 February 2025
  • Thumbnail for Cantor function
    In mathematics, the Cantor function is an example of a function that is continuous, but not absolutely continuous. It is a notorious counterexample in...
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  • In neurobiology, the length constant (λ) is a mathematical constant used to quantify the distance that a graded electric potential will travel along a...
    4 KB (590 words) - 01:24, 23 November 2024
  • Thumbnail for Cryptographic hash function
    check (CRC) functions. Most cryptographic hash functions are designed to take a string of any length as input and produce a fixed-length hash value. A...
    49 KB (6,299 words) - 15:10, 30 May 2025
  • Primitive recursive function, a function which can be computed with loops of bounded length Another name for computable function Recurrence relation,...
    540 bytes (94 words) - 10:00, 21 April 2021
  • Culler and Vogtmann constructed an embedding, via the translation length functions discussed below, of X n {\displaystyle X_{n}} into the infinite-dimensional...
    28 KB (4,144 words) - 17:55, 13 March 2025
  • the arc length of an ellipse. Important elliptic functions are Jacobi elliptic functions and the Weierstrass ℘ {\displaystyle \wp } -function. Further...
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  • norm satisfy the properties of a "length function" (or norm), that is: only the zero vector has zero length, the length of the vector is positive homogeneous...
    65 KB (12,217 words) - 21:17, 14 April 2025
  • Thumbnail for Probability density function
    a probability density function (PDF), density function, or density of an absolutely continuous random variable, is a function whose value at any given...
    30 KB (4,947 words) - 07:13, 1 June 2025
  • Thumbnail for One-way compression function
    cryptography, a one-way compression function is a function that transforms two fixed-length inputs into a fixed-length output. The transformation is "one-way"...
    24 KB (3,977 words) - 11:37, 24 March 2025
  • In algebra, the length of a module over a ring R {\displaystyle R} is a generalization of the dimension of a vector space which measures its size. page...
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  • Thumbnail for Orders of magnitude (length)
    magnitude for different lengths. To help compare different orders of magnitude, the following list describes various lengths between 1.6 × 10 − 35 {\displaystyle...
    186 KB (17,578 words) - 00:35, 20 June 2025
  • Thumbnail for HMAC
    Thus the algorithm provides better immunity against length extension attacks. An iterative hash function (one that uses the Merkle–Damgård construction) breaks...
    18 KB (2,316 words) - 18:51, 16 April 2025
  • it is a balanced function or equivalently, if and only if p ( u x ) ≤ p ( x ) {\displaystyle p(ux)\leq p(x)} for every unit length scalar u {\displaystyle...
    22 KB (4,192 words) - 17:21, 18 April 2025