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[Q] Erfi - what is it?

• Subject: [mg3328] [Q] Erfi - what is it?
• From: pherron at sphinx.Stanford.EDU (Michael C. Herron)
• Date: 26 Feb 1996 13:55:34 -0600
• Approved: usenet@wri.com
• Distribution: local
• Newsgroups: wri.mathgroup
• Organization: Graduate School Of Business, Stanford University
• Sender: daemon at wri.com

I used mathematica to solve an integral that I could not myself do
analytically.  The output contained a function Erfi[].  What is
Erfi[]?  I am familiar with the error function and its complement
(Erf[] and Erfc[] in mathematica), but I do not understand Erfi[].
The function does not appear to be in the manuals that I have seen,
either.

If someone could translate Erfi[] or provide a reference, I would
appreciate it.

Thanks.

Michael