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  2. Simple continued fraction - Wikipedia

    en.wikipedia.org/wiki/Simple_continued_fraction

    If x is rational, it will have two continued fraction representations that are finite, x 1 and x 2, and similarly a rational y will have two representations, y 1 and y 2. The coefficients beyond the last in any of these representations should be interpreted as +∞; and the best rational will be one of z(x 1, y 1), z(x 1, y 2), z(x 2, y 1), or ...

  3. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    The entire fraction may be expressed as a single composition, in which case it is hyphenated, or as a number of fractions with a numerator of one, in which case they are not. (For example, two-fifths is the fraction2 / 5 ⁠ and two fifths is the same fraction understood as 2 instances of ⁠ 1 / 5 ⁠.) Fractions should always be ...

  4. Dyadic rational - Wikipedia

    en.wikipedia.org/wiki/Dyadic_rational

    In mathematics, a dyadic rational or binary rational is a number that can be expressed as a fraction whose denominator is a power of two. For example, 1/2, 3/2, and 3/8 are dyadic rationals, but 1/3 is not. These numbers are important in computer science because they are the only ones with finite binary representations. Dyadic rationals also ...

  5. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Littlewood conjecture: for any two real numbers ,, ‖ ‖ ‖ ‖ =, where ‖ ‖ is the distance from to the nearest integer. Mahler's 3/2 problem that no real number x {\displaystyle x} has the property that the fractional parts of x ( 3 / 2 ) n {\displaystyle x(3/2)^{n}} are less than 1 / 2 {\displaystyle 1/2} for all positive integers n ...

  6. Euler's totient function - Wikipedia

    en.wikipedia.org/wiki/Euler's_totient_function

    These twenty fractions are all the positive ⁠ k / d ⁠ ≤ 1 whose denominators are the divisors d = 1, 2, 4, 5, 10, 20. The fractions with 20 as denominator are those with numerators relatively prime to 20, namely ⁠ 1 / 20 ⁠ , ⁠ 3 / 20 ⁠ , ⁠ 7 / 20 ⁠ , ⁠ 9 / 20 ⁠ , ⁠ 11 / 20 ⁠ , ⁠ 13 / 20 ⁠ , ⁠ 17 / 20 ⁠ , ⁠ 19 ...

  7. Ratio - Wikipedia

    en.wikipedia.org/wiki/Ratio

    If the ratio consists of only two values, it can be represented as a fraction, in particular as a decimal fraction. For example, older televisions have a 4:3 aspect ratio , which means that the width is 4/3 of the height (this can also be expressed as 1.33:1 or just 1.33 rounded to two decimal places).

  8. Polynomial - Wikipedia

    en.wikipedia.org/wiki/Polynomial

    The names for the degrees may be applied to the polynomial or to its terms. For example, the term 2x in x 2 + 2x + 1 is a linear term in a quadratic polynomial. The polynomial 0, which may be considered to have no terms at all, is called the zero polynomial. Unlike other constant polynomials, its degree is not zero.

  9. Energy density - Wikipedia

    en.wikipedia.org/wiki/Energy_density

    This energy is described by E = mc 2, where c is the speed of light. In terms of density, m = ρV , where ρ is the volumetric mass density, V is the volume occupied by the mass. This energy can be released by the processes of nuclear fission (~ 0.1%), nuclear fusion (~ 1%), or the annihilation of some or all of the matter in the volume V by ...