Earlier I posted an announcement of a paper Finite sum - product logic by J.R.B. Cockett R.A.G. Seely University of Calgary and McGill University robin@cpcs.ucalgary.ca rags@math.mcgill.ca But there was a slight error in the ftp URL given (the http url was correct however). The paper may be found at: rags web page: http://www.math.mcgill.ca/rags/ or McGill Maths ftp site: ftp://ftp.math.mcgill.ca/pub/rags/sigmapi/sigmapi.ps.gz ftp://ftp.math.mcgill.ca/pub/rags/sigmapi/sigmapi.dvi.gz ================== R.A.G. Seely <rags@math.mcgill.ca> <http://www.math.mcgill.ca/rags>