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In mathematics, a Gaussian function, often simply referred to as a Gaussian, is a function of the form:

Normalized Gaussian curves with expected value μ and variance σ. The corresponding parameters are , b = μ, and c = σ.

In mathematics, a Gaussian function, often simply referred to as a Gaussian, is a function of the form:

for arbitrary real constants a, b and c. It is named after the mathematician Carl Friedrich Gauss.

The graph of a Gaussian is a characteristic symmetric "bell curve" shape. The parameter a is the height of the curve's peak, b is the position of the center of the peak and c (the standard deviation, sometimes called the Gaussian RMS width) controls the width of the "bell".

Gaussian functions are widely used in statistics to describe the normal distributions, in signal processing to define Gaussian filters, in image processing where two-dimensional Gaussians are used for Gaussian blurs, and in mathematics to solve heat equations and diffusion equations and to define the Weierstrass transform.

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