Hankel Function of the First Kind
where
is a Bessel Function of the First Kind and 
is a Bessel Function of the Second Kind. Hankel functions of the first kind can be represented as a Contour Integral using
See also Debye's Asymptotic Representation,Watson-Nicholson Formula, Weyrich's Formula
References
Arfken, G. ``Hankel Functions.'' §11.4 in Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 604-610, 1985. Morse, P. M. and Feshbach, H. Methods of Theoretical Physics, Part I. New York: McGraw-Hill, pp. 623-624, 1953.
- Evolute
- Exact Covering System
- Exact Differential
- Exactly One
- Exactly When
- Exact Period
- Exact Trilinear Coordinates
- Excenter
- Excenter-Excenter Circle
- Excentral Triangle
- Excess
- Excess Coefficient
- Excessive Number
- Excircle
- Excision Axiom
- Excluded Middle Law
- Excludent
- Excludent Factorization Method
- Exclusive Or
- Exeter Point
- Exhaustion Method
- Existence
- Existential Closure
- Exists
- Exmedian