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  2. Table of congruences - Wikipedia

    en.wikipedia.org/wiki/Table_of_congruences

    Clement's congruence-based theorem characterizes the twin primes pairs of the form (, +) through the following conditions: [()! +] ((+)), +P. A. Clement's original 1949 paper [2] provides a proof of this interesting elementary number theoretic criteria for twin primality based on Wilson's theorem.

  3. Symbolab - Wikipedia

    en.wikipedia.org/wiki/Symbolab

    Symbolab is an answer engine [1] that provides step-by-step solutions to mathematical problems in a range of subjects. [2] It was originally developed by Israeli start-up company EqsQuest Ltd., under whom it was released for public use in 2011. In 2020, the company was acquired by American educational technology website Course Hero. [3] [4]

  4. Greedy algorithm for Egyptian fractions - Wikipedia

    en.wikipedia.org/wiki/Greedy_algorithm_for...

    If x 2 is the remaining fraction after this step of the greedy expansion, it satisfies the equation P 1 (x 2 + ⁠ 1 / 2 ⁠) = 0, which can be expanded as P 2 (x 2) = 4x 2 2 + 8 x 2 − 1 = 0 . Since P 2 ( x ) < 0 for x = ⁠ 1 / 9 ⁠ , and P 2 ( x ) > 0 for all x > ⁠ 1 / 8 ⁠ , the next term in the greedy expansion is ⁠ 1 / 9 ⁠ .

  5. Gauss congruence - Wikipedia

    en.wikipedia.org/wiki/Gauss_congruence

    In mathematics, Gauss congruence is a property held by certain sequences of integers, including the Lucas numbers and the divisor sum sequence. Sequences satisfying this property are also known as Dold sequences, Fermat sequences, Newton sequences, and realizable sequences. [ 1 ]

  6. Shor's algorithm - Wikipedia

    en.wikipedia.org/wiki/Shor's_algorithm

    The problem that we are trying to solve is: given an odd composite number, find its integer factors. To achieve this, Shor's algorithm consists of two parts: A classical reduction of the factoring problem to the problem of order-finding.

  7. Schur complement - Wikipedia

    en.wikipedia.org/wiki/Schur_complement

    The Schur complement arises when performing a block Gaussian elimination on the matrix M.In order to eliminate the elements below the block diagonal, one multiplies the matrix M by a block lower triangular matrix on the right as follows: = [] [] [] = [], where I p denotes a p×p identity matrix.

  8. Congruent number - Wikipedia

    en.wikipedia.org/wiki/Congruent_number

    For example, 5 is a congruent number because it is the area of a (20/3, 3/2, 41/6) triangle. Similarly, 6 is a congruent number because it is the area of a (3,4,5) triangle. 3 and 4 are not congruent numbers.

  9. Tonelli–Shanks algorithm - Wikipedia

    en.wikipedia.org/wiki/Tonelli–Shanks_algorithm

    The Tonelli–Shanks algorithm (referred to by Shanks as the RESSOL algorithm) is used in modular arithmetic to solve for r in a congruence of the form r 2 ≡ n (mod p), where p is a prime: that is, to find a square root of n modulo p.