@ThomasKlimpel hey TK whats new? "ghost"! lol! re sunflowers, am a huge fan, one of my top favorite proofs of all time is by Razborov which has been adapted to use sunflower properties by later researchers + initiated by erdos my hero :) vzn1.wordpress.com/2015/12/08/attack-on-of-the-sunflowers vzn1.wordpress.com/2013/03/29/…