Debye function

In mathematics, the family of Debye functions is defined by

D_n(x) = \frac{n}{x^n} \int_0^x \frac{t^n}{e^t - 1}\,dt.

The functions are named in honor of Peter Debye, who came across this function (with n = 3) in 1912 when he analytically computed the heat capacity of a solid. His method is now called the Debye model.

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