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  2. Quadratic residue - Wikipedia

    en.wikipedia.org/wiki/Quadratic_residue

    Modulo 2, every integer is a quadratic residue. Modulo an odd prime number p there are (p + 1)/2 residues (including 0) and (p − 1)/2 nonresidues, by Euler's criterion.In this case, it is customary to consider 0 as a special case and work within the multiplicative group of nonzero elements of the field (/).

  3. Proofs of quadratic reciprocity - Wikipedia

    en.wikipedia.org/wiki/Proofs_of_quadratic...

    The number of points with even x-coordinate inside BCYX (marked by O's) is equal modulo 2 to the number of such points in CZY (marked by X's) Then by flipping the diagram in both axes, we see that the number of points with even x -coordinate inside CZY is the same as the number of points inside AXY having odd x -coordinates.

  4. Modulo - Wikipedia

    en.wikipedia.org/wiki/Modulo

    In computing, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another, called the modulus of the operation.. Given two positive numbers a and n, a modulo n (often abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the divisor.

  5. Berkelium tetrafluoride - Wikipedia

    en.wikipedia.org/wiki/Berkelium_tetrafluoride

    Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Berkelium tetrafluoride is a binary inorganic compound of berkelium and fluorine with the chemical formula BkF4. [1]

  6. Berkelium(III) fluoride - Wikipedia

    en.wikipedia.org/wiki/Berkelium(III)_fluoride

    Berkelium tetrafluoride. Einsteinium (III) fluoride. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references. Berkelium (III) fluoride is a binary inorganic compound of berkelium and fluorine with the chemical formula BkF. 3.

  7. Multiplicative group of integers modulo n - Wikipedia

    en.wikipedia.org/wiki/Multiplicative_group_of...

    n. In modular arithmetic, the integers coprime (relatively prime) to n from the set of n non-negative integers form a group under multiplication modulo n, called the multiplicative group of integers modulo n. Equivalently, the elements of this group can be thought of as the congruence classes, also known as residues modulo n, that are coprime to n.

  8. Mathematics of cyclic redundancy checks - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_cyclic...

    Mathematics of cyclic redundancy checks. The cyclic redundancy check (CRC) is based on division in the ring of polynomials over the finite field GF (2) (the integers modulo 2), that is, the set of polynomials where each coefficient is either zero or one, and arithmetic operations wrap around. Any string of bits can be interpreted as the ...

  9. Modular forms modulo p - Wikipedia

    en.wikipedia.org/wiki/Modular_forms_modulo_p

    Modular forms modulo. p. In mathematics, modular forms are particular complex analytic functions on the upper half-plane of interest in complex analysis and number theory. When reduced modulo a prime p, there is an analogous theory to the classical theory of complex modular forms and the p -adic theory of modular forms .