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  2. Template:Transformation rules - Wikipedia

    en.wikipedia.org/wiki/Template:Transformation_rules

    Toggle the table of contents. Template: Transformation rules. 10 languages. Беларуская (тарашкевіца) ... Print/export Download as PDF;

  3. Rectangular function - Wikipedia

    en.wikipedia.org/wiki/Rectangular_function

    Plot of normalized ⁡ function (i.e. ⁡ ()) with its spectral frequency components.. The unitary Fourier transforms of the rectangular function are [2] ⁡ = ⁡ = ⁡ (), using ordinary frequency f, where is the normalized form [10] of the sinc function and ⁡ = ⁡ (/) / = ⁡ (/), using angular frequency , where is the unnormalized form of the sinc function.

  4. Rotation of axes in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_of_axes_in_two...

    In mathematics, a rotation of axes in two dimensions is a mapping from an xy-Cartesian coordinate system to an x′y′-Cartesian coordinate system in which the origin is kept fixed and the x′ and y′ axes are obtained by rotating the x and y axes counterclockwise through an angle .

  5. Conformal map - Wikipedia

    en.wikipedia.org/wiki/Conformal_map

    However, the exponential function is a holomorphic function with a nonzero derivative, but is not one-to-one since it is periodic. [ 2 ] The Riemann mapping theorem , one of the profound results of complex analysis , states that any non-empty open simply connected proper subset of C {\displaystyle \mathbb {C} } admits a bijective conformal map ...

  6. Transformation (function) - Wikipedia

    en.wikipedia.org/wiki/Transformation_(function)

    In mathematics, a transformation, transform, or self-map [1] is a function f, usually with some geometrical underpinning, that maps a set X to itself, i.e. f: X → X. [ 2 ] [ 3 ] [ 4 ] Examples include linear transformations of vector spaces and geometric transformations , which include projective transformations , affine transformations , and ...

  7. Fixed point (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Fixed_point_(mathematics)

    In mathematics, a fixed point (sometimes shortened to fixpoint), also known as an invariant point, is a value that does not change under a given transformation. Specifically, for functions, a fixed point is an element that is mapped to itself by the function. Any set of fixed points of a transformation is also an invariant set.

  8. AOL Mail Help - AOL Help

    help.aol.com/products/new-aol-mail

    You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.

  9. Template:Logical truth - Wikipedia

    en.wikipedia.org/wiki/Template:Logical_truth

    The order of columns also does matter. Left column contains abstract entities, just defined. Middle column describes application concepts: a truth function may give true or false, a formal proof may exist or not, and a contradiction may occur or be avoided. Rightmost column contains types of (mathematical) results.