Dear Colleagues, The journal "Journal of Homotopy and Related Structures" (http://jhrs.rmi.acnet.ge) intends to publish a volume (maybe with two issues) dedicated to the memory of Saunders Mac Lane who died 14 April 2005 in San Francisco. He was one of the most influential mathematicians of the 20th century and he created a new way of thinking about mathematics. The editors of Mac Lane volume are: Michael Barr (mbarr@math.mcgill.ca), Ronald Brown (r.brown@bangor.ac.uk), Peter Freyd (pjf@math.upenn.edu) and George Janelidze as executive editor (gjanel@rmi.acnet.ge). Have promised to contribute Peter May and William Lawvere. We hereby invite you to make a contribution. We are interested in mathematical papers satisfying high standards appropriate for such a volume and related to Mac Lane's interests, but also in papers related to areas of mathematics covered by the scope of JHRS. The submission deadline is end of August 2006. Papers should be submitted to any editor of Mac Lane volume, where they will have the usual refereeing process according to the submission policy of JHRS. The editors of Mac Lane volume could invite other mathematicians as contributers. It would be a great honour for our Editorial Board to contribute and edit a volume dedicated to the memory of Saunders Mac lane. Sincerely yours Hvedri Inassaridze Editor-in-Chief of JHRS ---------------------------------------------------------------------------- Professor Hvedri Inassaridze, Tel.: 995 32 334728 (work) Head of the Department of Algebra, 995 32 230852 (home) A.Razmadze Mathematical Institute, 995 99 157836 (mobile) Georgian Academy of Sciences, Fax: 995 32 001153 M.Alexidze Str.1, Tbilisi 0193, Georgia email: hvedri@rmi.acnet.ge inassari@yahoo.com http://www.rmi.acnet.ge/~hvedri