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Weierstrass transform. In mathematics, the Weierstrass transform[1] of a function f : R → R, named after Karl Weierstrass, is a "smoothed" version of f(x) obtained by averaging the values of f, weighted with a Gaussian centered at x. The graph of a function f (x) (black) and its generalized Weierstrass transforms for five width (t) parameters.
Domain coloring plot of the function f(x) = (x2 − 1) (x − 2 − i) 2 x2 + 2 + 2 i, using the structured color function described below. In complex analysis, domain coloring or a color wheel graph is a technique for visualizing complex functions by assigning a color to each point of the complex plane. By assigning points on the ...
Sine and cosine transforms. The sine and cosine transforms convert a function into a frequency domain representation as a sum of sine and cosine waves. The inverse transform converts back to a time or spatial domain. In mathematics, the Fourier sine and cosine transforms are integral equations that decompose arbitrary functions into a sum of ...
The linear–log type of a semi-log graph, defined by a logarithmic scale on the x axis, and a linear scale on the y axis. Plotted lines are: y = 10 x (red), y = x (green), y = log (x) (blue). In science and engineering, a semi-log plot / graph or semi-logarithmic plot / graph has one axis on a logarithmic scale, the other on a linear scale.
Given a function: from a set X (the domain) to a set Y (the codomain), the graph of the function is the set [4] = {(, ()):}, which is a subset of the Cartesian product.In the definition of a function in terms of set theory, it is common to identify a function with its graph, although, formally, a function is formed by the triple consisting of its domain, its codomain and its graph.
In mathematics, a transformation 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 specific affine ...
Inverse Laplace transform. In mathematics, the inverse Laplace transform of a function is the piecewise- continuous and exponentially-restricted [clarification needed] real function which has the property: where denotes the Laplace transform. It can be proven that, if a function has the inverse Laplace transform , then is uniquely determined ...
Hilbert transform. In mathematics and signal processing, the Hilbert transform is a specific singular integral that takes a function, u(t) of a real variable and produces another function of a real variable H (u) (t). The Hilbert transform is given by the Cauchy principal value of the convolution with the function (see § Definition).
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