Dear Categorists, below you find the First Announcement for Samuel Eilenberg Centenary Conference that will be held in Warszawa (Warsaw), Poland, July 22-26, 2013 The registration is already open! Looking forward to seeing you in Warsaw, Marek Zawadowski First Announcement The Conference will be held at the old campus of the University of Warsaw, Alma Mater of Samuel Eilenberg, July 22--26 2013. The Conference is organized by the University of Warsaw, Polish Mathematical Society and the Institute of Mathematics of the Polish Academy of Sciences in collaboration with the American Mathematical Society and Columbia University. Scientific Program Plenary lectures will be delivered by Paul Balmer (University of California at Los Angeles), John Greenlees (University of Sheffield), Martin Hyland (University of Cambridge), Andre Joyal (Universit?? du Qu??bec a Montr??al), Mikhail Kapranov (Yale University) ??? to be confirmed, William Lawvere (University at Buffalo), Haynes Miller (MIT), Ieke Moerdijk (Radboud University Nijmegen), Brooke E Shipley (University of Illinois at Chicago), Bernard Toen (Universit?? de Montpellier), Shmuel Weinberger (University of Chicago), Mariusz Wodzicki (University of California at Berkeley). We plan also to organize parallel sessions of contributed talks and poster session which will cover the areas of Eilenberg's contributions: algebraic topology, category theory and computability. Sectional talks will last 30-45 minutes. Proposals of talks can be submitted electronically after registration for the conference. There will be a number of events commemorating Eilenberg, including special historical lectures and a conference dinner on Wednesday, July 24. On the occasion of the conference a special volume of Fundamenta Mathematicae will appear, the journal in which Eilenberg published many papers, including his first (in 1934) and the last (in 1988) topological papers. Participants are welcome to submit their papers which all will be refereed. Important dates and deadlines 2013-05-16 (Thursday) -- raise of the conference fee 2013-06-16 (Sunday) -- deadline for submission of abstracts 2013-07-21 (Sunday) -- arrival day 2013-07-22 (Monday) -- opening of the conference 2013-07-24 (Wednesday) -- conference dinner and tourist program 2013-07-26 (Friday) -- end of the conference For information, registration and subscription of the Conference Newsletter visit http://eilenberg100.ptm.org.pl/. Financial support Grants will be offered to a limited number of students and postdocs, towards covering their local expenses in Warsaw. Application can be submitted via the registration website. If you have any further questions contact the local organizers at: eilenberg100@ptm.org.pl We look forward to welcoming you to Warsaw! [For admin and other information see: http://www.mta.ca/~cat-dist/ ]