Einstein Functions

The functions $x^2e^x/(e^x-1)^2$, $x/(e^x-1)$, $\ln(1-e^{-x})$, and $x/(e^x-1)-\ln(1-e^{-x})$.

References

Abramowitz, M. and Stegun, C. A. (Eds.). ``Debye Functions.'' §27.1 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, pp. 999-1000, 1972.