<< . . . while attending a Combinatorial Theory Workshop held at "BIRS" (Berkeley?) . . . Banff International Research Station. The acronym is appropriate: in March '09 I had the privilege of attending a workshop there, when the temperature hit -22 F. (-27 C.), and there were lots of brrs. <<< http://www.birs.ca/ >>> --Dan ________________________________________________________________________________________ "Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read." --Groucho Marx