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I wanted to know if anyone knew somewhere I could find the asymptotic behavior for small x (i.e x approaching 0) limit of the modified Bessel equations with complex order. The wikipedia page for Bessel functions (https://en.wikipedia.org/wiki/Bessel_function#Modified_Bessel_functions:_Iα,_Kα) provides a limit when ##|z| \ll \sqrt{\alpha+1}## but in the case of complex-valued ##\alpha## I am not sure how to interpret this bound.

Any assistance would be appreciated.