LAST CALL FOR CONTRIBUTIONS TO THE SPECIAL ISSUE OF THE TBILISI MATHEMATICAL JOURNAL IN HONOR OF PETER J. FREYD AND F. WILLIAM LAWVERE ON THE OCCASION OF THEIR 80TH BIRTHDAYS Lead Editor: Marta Bunge (McGill University, Canada) bunge@math.mcgill.ca Guest Editors: Andrej Bauer (University of Ljubljana, Slovenia) Andrej.Bauer@andrej.com Peter T. Johnstone (University of Cambridge, UK) P.T.Johnstone@dmms.cam.ac.uk Anders Kock (Aarhus University, Denmark) kock@math.au.dk Colin McLarty (Case Western Reserve University, USA) Susan Niefield (Union College, USA) niefield@union.edu Andrew Pitts (University of cambridge, UK) Andrew.Pitts@cl.cam.ac.uk John Power (University of Bath, UK) a.j.powerr@bath.ac.uk Giuseppe Rosolini (Universita di Genova, Italy) rosolini@unige.it Ross Street (Macquarie University, Australia) ross.street@mq.edu.au Thomas Streicher (Technische University, Germany) streicher@mathematik.tu-darmstadt.de Walter Tholen (York University, Canada) tholen@mathstat.yorku.ca David Yetter (Kansas State University, USA) dyetter@math.ksu.edu Scope: Original articles (in PDF format) in any of the areas of interest to the honorees may be submitted to any of the guest editors. Guest editors themselves may submit their contributions to the lead editor. Contributions will be published online in TMJ, Volume 10, Issue 3 (2017) as soon as accepted. Submissions deadline: September 30, 2017. For further information please go to http://tcms.org.ge/Journals/TMJ/ [For admin and other information see: http://www.mta.ca/~cat-dist/ ]