Let be a Series with Positive terms and suppose
See also Convergence Tests
References
Arfken, G. Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 282-283, 1985.
Bromwich, T. J. I'a. and MacRobert, T. M. An Introduction to the Theory of Infinite Series, 3rd ed.
New York: Chelsea, p. 28, 1991.