The Kelvin functions of the second kind are the Kelvin functions kei and ker defined by
 |
where 
is a modified Bessel function
of the second kind.
Kelvin Function of the Second Kind
See also
Kei, Kelvin Functions, KerExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Kelvin Function of the Second Kind." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/KelvinFunctionoftheSecondKind.html