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  2. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    A complex number is an expression of the form a + bi, where a and b are real numbers, and i is an abstract symbol, the so-called imaginary unit, whose meaning will be explained further below. For example, 2 + 3i is a complex number. [3]

  3. Complex (psychology) - Wikipedia

    en.wikipedia.org/wiki/Complex_(psychology)

    An example of a complex would be as follows: if a person had a leg amputated as a child, this would influence the person's life in profound ways, even upon overcoming the physical handicap. The person may have many thoughts, emotions, memories, feelings of inferiority, triumphs, bitterness, and determinations centering on that one aspect of life.

  4. Complex conjugate - Wikipedia

    en.wikipedia.org/wiki/Complex_conjugate

    The above properties actually define a real structure on the complex vector space . [2] One example of this notion is the conjugate transpose operation of complex matrices defined above. However, on generic complex vector spaces, there is no canonical notion of complex conjugation.

  5. Argument (complex analysis) - Wikipedia

    en.wikipedia.org/wiki/Argument_(complex_analysis)

    Figure 1. This Argand diagram represents the complex number lying on a plane.For each point on the plane, arg is the function which returns the angle . In mathematics (particularly in complex analysis), the argument of a complex number z, denoted arg(z), is the angle between the positive real axis and the line joining the origin and z, represented as a point in the complex plane, shown as in ...

  6. Complex analysis - Wikipedia

    en.wikipedia.org/wiki/Complex_analysis

    Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex ...

  7. Complex conjugate root theorem - Wikipedia

    en.wikipedia.org/wiki/Complex_conjugate_root_theorem

    For example, if the matrix is orthogonal, then 1 or −1 is an eigenvalue. ... Since non-real complex roots come in conjugate pairs, there are an even number of them;

  8. Simplicial complex - Wikipedia

    en.wikipedia.org/wiki/Simplicial_complex

    An example of a non-homogeneous complex is a triangle with a line segment attached to one of its vertices. Pure simplicial complexes can be thought of as triangulations and provide a definition of polytopes. A facet is a maximal simplex, i.e., any simplex in a complex that is not a face of any larger simplex. [2]

  9. Complex question - Wikipedia

    en.wikipedia.org/wiki/Complex_question

    A complex question, trick question, multiple question, fallacy of presupposition, or plurium interrogationum (Latin, 'of many questions') is a question that has a complex presupposition. The presupposition is a proposition that is presumed to be acceptable to the respondent when the question is asked.