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  2. Wilson's theorem - Wikipedia

    en.wikipedia.org/wiki/Wilson's_theorem

    In algebra and number theory, Wilson's theorem states that a natural number n > 1 is a prime number if and only if the product of all the positive integers less than n is one less than a multiple of n.

  3. 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.

  4. Wilson quotient - Wikipedia

    en.wikipedia.org/wiki/Wilson_quotient

    The Wilson quotient W(p) is defined as: = ()! + If p is a prime number, the quotient is an integer by Wilson's theorem; moreover, if p is composite, the quotient is not an integer. If p divides W(p), it is called a Wilson prime. The integer values of W(p) are (sequence A007619 in the OEIS): W(2) = 1

  5. List of theorems - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems

    Folk theorem (game theory) Foster's theorem ; Four color theorem (graph theory) Four functions theorem (combinatorics) Four-vertex theorem (differential geometry) Fourier inversion theorem (harmonic analysis) Fourier theorem (harmonic analysis) Franel–Landau theorem (number theory) Fraňková–Helly selection theorem (mathematical analysis)

  6. Formula for primes - Wikipedia

    en.wikipedia.org/wiki/Formula_for_primes

    Because the set of primes is a computably enumerable set, by Matiyasevich's theorem, it can be obtained from a system of Diophantine equations. Jones et al. (1976) found an explicit set of 14 Diophantine equations in 26 variables, such that a given number k + 2 is prime if and only if that system has a solution in nonnegative integers: [7]

  7. Wilson prime - Wikipedia

    en.wikipedia.org/wiki/Wilson_prime

    In number theory, a Wilson prime is a prime number such that divides ()! +, where "!" denotes the factorial function; compare this with Wilson's theorem, which states that every prime divides ()! +. Both are named for 18th-century English mathematician John Wilson ; in 1770, Edward Waring credited the theorem to Wilson, [ 1 ] although it had ...

  8. Isomorphism theorems - Wikipedia

    en.wikipedia.org/wiki/Isomorphism_theorems

    An application of the second isomorphism theorem identifies projective linear groups: for example, the group on the complex projective line starts with setting = ⁡ (), the group of invertible 2 × 2 complex matrices, = ⁡ (), the subgroup of determinant 1 matrices, and the normal subgroup of scalar matrices = {():}, we have = {}, where is ...

  9. List of Corbett mountains - Wikipedia

    en.wikipedia.org/wiki/List_of_Corbett_mountains

    This list was downloaded from the Database of British and Irish Hills ("DoBIH") in September 2020, and are peaks the DoBIH marks as being Corbetts ("C"). [a] [12] The SMC updates their list of official Corbetts from time to time, and the DoBIH also updates their measurements as more detailed surveys are recorded, so these tables should not be amended or updated unless the entire DoBIH data is ...