A function of a real variable x equal to ((cos nπ) Jₙ(x) − J₋ₙ(x))/sin nπ (where Jₙ is a Bessel function), which is a solution of Bessel's equation when n is not an integer.
Origin
Late 19th century; earliest use found in Proceedings of the Royal Society of London.
Definition of Neumann function in US English:
Neumann function
(also Neumann's function)
noun
A function of a real variable x equal to ((cos nπ) Jₙ(x) − J₋ₙ(x))/sin nπ (where Jₙ is a Bessel function), which is a solution of Bessel's equation when n is not an integer.
Origin
Late 19th century; earliest use found in Proceedings of the Royal Society of London.