Subject: query
From: jim stasheff <jds@math.upenn.edu>
Date: Fri, 17 Aug 2007 08:53:28 -0400

Could someone remind me what is known (and where) about 


> up to ambient isotopy, immersions of P = the real projective plane into 
R^3  

> with a connected self-intersection set containing just one triple point 
(i.e. "Boy-like").

thanks

jim