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  2. Rational number - Wikipedia

    en.wikipedia.org/wiki/Rational_number

    In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers. For example, a rational point is a point with rational coordinates (i.e., a point whose coordinates are rational numbers); a rational matrix is a matrix of rational numbers; a rational polynomial may be a polynomial with rational ...

  3. Richard Dedekind - Wikipedia

    en.wikipedia.org/wiki/Richard_Dedekind

    Julius Wilhelm Richard Dedekind (/ ˈ d eɪ d ɪ k ɪ n d /; [1] German: [ˈdeːdəˌkɪnt]; 6 October 1831 – 12 February 1916) was a German mathematician who made important contributions to number theory, abstract algebra (particularly ring theory), and the axiomatic foundations of arithmetic.

  4. Large numbers - Wikipedia

    en.wikipedia.org/wiki/Large_numbers

    I.e., if a number x is too large for a representation () the power tower can be made one higher, replacing x by log 10 x, or find x from the lower-tower representation of the log 10 of the whole number. If the power tower would contain one or more numbers different from 10, the two approaches would lead to different results, corresponding to ...

  5. e (mathematical constant) - Wikipedia

    en.wikipedia.org/wiki/E_(mathematical_constant)

    The number e is a mathematical constant approximately equal to 2.71828 that is the base of the natural logarithm and exponential function.It is sometimes called Euler's number, after the Swiss mathematician Leonhard Euler, though this can invite confusion with Euler numbers, or with Euler's constant, a different constant typically denoted .

  6. Solo Stove review: This smokeless fire pit lives up to the hype

    www.aol.com/lifestyle/solo-stove-bonfire-review...

    We tested out the popular smokeless Solo Stove Bonfire fire pit, and we were really impressed at how well it performed.

  7. Integer - Wikipedia

    en.wikipedia.org/wiki/Integer

    The integers arranged on a number line. An integer is the number zero (), a positive natural number (1, 2, 3, . . .), or the negation of a positive natural number ...

  8. N Is a Number: A Portrait of Paul Erdős - Wikipedia

    en.wikipedia.org/wiki/N_Is_a_Number:_A_Portrait...

    N Is a Number: A Portrait of Paul Erdős is a 1993 biographical documentary about the life of mathematician Paul Erdős, directed by George Paul Csicsery.. The film was made between 1988 and 1991, capturing Erdős in various countries along with some of his numerous collaborators.

  9. Imaginary number - Wikipedia

    en.wikipedia.org/wiki/Imaginary_number

    An illustration of the complex plane. The imaginary numbers are on the vertical coordinate axis. Although the Greek mathematician and engineer Heron of Alexandria is noted as the first to present a calculation involving the square root of a negative number, [6] [7] it was Rafael Bombelli who first set down the rules for multiplication of complex numbers in 1572.