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  2. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i 2 = −1.

  3. Geometry of Complex Numbers - Wikipedia

    en.wikipedia.org/wiki/Geometry_of_Complex_Numbers

    Geometry of Complex Numbers is an undergraduate textbook on geometry, whose topics include circles, the complex plane, inversive geometry, and non-Euclidean geometry. It was written by Hans Schwerdtfeger , and originally published in 1962 as Volume 13 of the Mathematical Expositions series of the University of Toronto Press .

  4. Grassmann number - Wikipedia

    en.wikipedia.org/wiki/Grassmann_number

    In mathematical physics, a Grassmann number, named after Hermann Grassmann (also called an anticommuting number or supernumber), is an element of the exterior algebra of a complex vector space. [1] The special case of a 1-dimensional algebra is known as a dual number .

  5. Category:Complex numbers - Wikipedia

    en.wikipedia.org/wiki/Category:Complex_numbers

    The complex numbers contain a number i, the imaginary unit, with i 2 = −1, i.e., i is a square root of −1. Every complex number can be represented in the form x + iy, where x and y are real numbers called the real part and the imaginary part of the complex number respectively.

  6. Complex algebra - Wikipedia

    en.wikipedia.org/wiki/Complex_algebra

    Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... Algebra involving complex numbers This page was last edited ...

  7. Complex modulus - Wikipedia

    en.wikipedia.org/wiki/Complex_Modulus

    Complex modulus may refer to: Modulus of complex number , in mathematics, the norm or absolute value, of a complex number: | x + i y | = x 2 + y 2 {\displaystyle |x+iy|={\sqrt {x^{2}+y^{2}}}} Dynamic modulus , in materials engineering, the ratio of stress to strain under vibratory conditions

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