I just read that Alberto Mendelzon died about a month ago. I worked for him for several years, from when he opened his lab to employ a mere high-school kid on a co-op work term in 1989, through till I finally left the university nest in 1995 to go to IBM. I owe him tremendously for the opportunities those years opened for me, for the great gang of students he got together, for the work we accomplished. Though we did very rarely exchange email during the last few years, I regret not visiting him and thanking him in person. He was a warm man, as is usual of the south american / jewish variety. I’m sad that working with him again will not come to be.