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  2. List of algorithms - Wikipedia

    en.wikipedia.org/wiki/List_of_algorithms

    An algorithm is fundamentally a set of rules or defined procedures that is typically designed and used to solve a specific problem or a broad set of problems.. Broadly, algorithms define process(es), sets of rules, or methodologies that are to be followed in calculations, data processing, data mining, pattern recognition, automated reasoning or other problem-solving operations.

  3. Limaçon - Wikipedia

    en.wikipedia.org/wiki/Limaçon

    Construction of the limaçon r = 2 + cos(π – θ) with polar coordinates' origin at (x, y) = (⁠ 1 / 2 ⁠, 0). In geometry, a limaçon or limacon / ˈ l ɪ m ə s ɒ n /, also known as a limaçon of Pascal or Pascal's Snail, is defined as a roulette curve formed by the path of a point fixed to a circle when that circle rolls around the outside of a circle of equal radius.

  4. Yang Hui - Wikipedia

    en.wikipedia.org/wiki/Yang_Hui

    Yang was also well known for his ability to manipulate decimal fractions. When he wished to multiply the figures in a rectangular field with a breadth of 24 paces 3 410 ft. and length of 36 paces 2 810, Yang expressed them in decimal parts of the pace, as 24.68 X 36.56 = 902.3008. [10]

  5. Midpoint circle algorithm - Wikipedia

    en.wikipedia.org/wiki/Midpoint_circle_algorithm

    The initialization in the first line (shifting by 4 bits to the right) is only due to beauty and not really necessary. So we get countable operations within main-loop: The comparison x >= y (is counted as a subtraction: x - y >= 0) y=y+1 [y++] t1 + y; t1 - x The comparison t2 >= 0 is not counted as no real arithmetic takes place.

  6. Singmaster's conjecture - Wikipedia

    en.wikipedia.org/wiki/Singmaster's_conjecture

    Singmaster's conjecture is a conjecture in combinatorial number theory, named after the British mathematician David Singmaster who proposed it in 1971. It says that there is a finite upper bound on the multiplicities of entries in Pascal's triangle (other than the number 1, which appears infinitely many times).

  7. Salsa20 - Wikipedia

    en.wikipedia.org/wiki/Salsa20

    Salsa20 and the closely related ChaCha are stream ciphers developed by Daniel J. Bernstein.Salsa20, the original cipher, was designed in 2005, then later submitted to the eSTREAM European Union cryptographic validation process by Bernstein.

  8. Pascaline - Wikipedia

    en.wikipedia.org/wiki/Pascaline

    10: 8 × 10 + 20 + 12: The second wheel from the right has a wheel with 10 spokes contained in a fixed wheel with 20 segments. This could be attributed to a bad restoration. Léon Parcé collection: France: Surveying: 8: 5 x 10 + 6 + 12 + 12 This machine was bought as a broken music box in a French antique shop in 1942. IBM collection [23] USA ...

  9. Pascal's pyramid - Wikipedia

    en.wikipedia.org/wiki/Pascal's_pyramid

    Pascal's pyramid's first five layers. Each face (orange grid) is Pascal's triangle. Arrows show derivation of two example terms. In mathematics, Pascal's pyramid is a three-dimensional arrangement of the trinomial numbers, which are the coefficients of the trinomial expansion and the trinomial distribution. [1]