Please give a round of applause to ahrkron for his efforts here! ahrkron has decided to retire from PF staff to concentrate on his studies and work. He's been here a number of years and was important in the physics and maths dept. Please send him a PM with some of your thoughts and thanks! Secondly please welcome Math Is Hard (MIH) to the PF staff! She will be a great asset helping us look after a number of forums we are currently understaffed in and PF in general.