## Hyperbolic Cotangent

The hyperbolic cotangent is defined as

Its Laurent Series is

See also Bernoulli Number, Bipolar Coordinates, Bipolar Cylindrical Coordinates, Cotangent, Fibonacci Hyperbolic Cotangent, Hyperbolic Tangent, Laplace's Equation--Toroidal Coordinates, Lebesgue Constants (Fourier Series), Prolate Spheroidal Coordinates, Surface of Revolution, Toroidal Coordinates, Toroidal Function

References

Abramowitz, M. and Stegun, C. A. (Eds.). Hyperbolic Functions.'' §4.5 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, pp. 83-86, 1972.

Spanier, J. and Oldham, K. B. The Hyperbolic Tangent and Cotangent Functions.'' Ch. 30 in An Atlas of Functions. Washington, DC: Hemisphere, pp. 279-284, 1987.