Who invented recursion?

[spamsink]

Who came up with the notion of algorithmic recursion: a philosopher or a mathematician? Whoever that was, he (I presume :-) ) deserves a monument.

Comments

[anhinga-anhinga.livejournal.com]

I think the credit goes to Stephen Cole Kleene.

Ummm... it looks like he also invented regular expressions.

photo...

[spamsink]

Thanks; and the monument is fitting. To tell the truth, I have not heard of him before, despite the fact that he is credited with inventing regular expressions. I used to associate regular expressions with Backus.