beigel-richard@CS.YALE.EDU (Richard Beigel) (07/27/90)
Nick Reingold, Dan Spielman, and myself have recently shown that PP is closed under intersection. Our technical report is available by anonymous ftp from ra.cs.yale.edu. The files you need are pub/TR/tr803.tex and pub/TR/yaletitlepage.sty. You will also need the latex program. Richard Beigel telephone: (203)432-1268 Dept. of Computer Science email: beigel-richard@cs.yale.edu P.O. Box 2158, Yale Station campus mail: A. K. Watson Hall New Haven, CT 06520-2158 51 Prospect Street