= Spectral method
{wiki=Spectral_method}
Spectral methods are a class of numerical techniques used to solve differential equations by expanding the solution in terms of a set of basis functions. These methods are particularly powerful for solving problems in fluid dynamics, wave propagation, and other areas of physics and engineering. Spectral methods leverage the properties of Fourier series or orthogonal polynomials to achieve high accuracy with relatively few degrees of freedom.
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