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Buckmaster equation

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In mathematics, the Buckmaster equation is a second-order nonlinear partial differential equation, named after John D. Buckmaster, who derived the equation in 1977.[1] The equation models the surface of a thin sheet of viscous liquid. The equation was derived earlier by S. H. Smith and by P Smith,[2][3] but these earlier derivations focused on the steady version of the equation.

The Buckmaster equation is

where is a known parameter.

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