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Lane-Emden equation
hamugeš-e Lane-Emden
Fr.: équation de Lane-Emden
A second-order nonlinear → differential equation that gives the structure of a → polytrope of index n. See also: Named after the American astrophysicist Jonathan Homer Lane (1819-1880) and the Swiss astrophysicist Robert Emden (1862-1940); → equation |