ABSTRACT
In this work we study the associated Legendre functions of the second kind with a purely imaginary argument . We derive the conditions under which they provide a set of square integrable functions when
and we prove the relevant orthogonality relation that they satisfy.
Disclosure statement
No potential conflict of interest was reported by the author.
ORCID
N. Dimakis http://orcid.org/0000-0002-1307-1073.