[math-fun] Joerg Arndt

I am hoping that somebody on this list is in regular contact with "Joerg Arndt" <arndt@jjj.de> and, if still able to reach him, would be kind enough to advise him that my replies to his emails are being blocked by rogue anti-spam software [apparently going under the name "grey-listing", though in my case "grey-hair-causing" might be more appropriate]. Fred Lunnon