Alf van der Poorten has died. He did a fair amount of work with Somos sequences. Jeff Shallitt has a tribute on his blog, at http://recursed.blogspot.com/2010/10/alf-van-der-poorten-1942-2010.html and there's a notice at http://www.austms.org.au/tiki-read_article.php?articleId=110 Rich ----- Forwarded message from gerry.myerson@mq.edu.au ----- Date: Mon, 11 Oct 2010 20:43:38 -0500 From: g m <gerry.myerson@mq.edu.au> Reply-To: Number Theory List <NMBRTHRY@listserv.nodak.edu>, g m <gerry.myerson@mq.edu.au> Subject: Alf van der Poorten To: NMBRTHRY@listserv.nodak.edu I regret to inform the Number Theory list of the passing of Alf van der Poorten. http://www.austms.org.au/tiki-read_article.php?articleId=110 -- Gerry Myerson (gerry.myerson@mq.edu.au) ----- End forwarded message -----