BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260512T230059EDT-8273twVEFU@132.216.98.100 DTSTAMP:20260513T030059Z DESCRIPTION:First-order logic with dependent sorts (FOLDS) and the related generalization of the concept of isomorphism\, 'FOLDS equivalence'\n\nThis will be a partial introduction to the subject I first wrote about in 1995 in the monograph with the similar title (see my website). A shorter descr iption is in the (published) 1998 paper no. 68 in my CV (on the website\; also downloadable). There are more things on FOLDS on my website\, and awa y from it as well. For instance\, the MSC thesis of Christian Boudreault\, which is relevant to the specific things I want to say\, I still have to put on my website. Although my familiarity with the literature tends to be spotty\, I have the long-standing and strong impression that FOLDS and FO LDS equivalences have generated little interest either in the logical or i n the categorical community: let this be a warning for you. After generali ties\, I will concentrate on countable structures\, the family of analytic equivalence relations given by FOLDS equivalences\, and logical connectio ns\, e.g. a generalization of Scott's isomorphism theorem on countable str uctures.\n DTSTART:20170314T193000Z DTEND:20170314T203000Z LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue Sherbrooke Ouest SUMMARY:M. Makkai\, Âé¶¹´«Ã½ÍøÕ¾ URL:/mathstat/channels/event/m-makkai-mcgill-267008 END:VEVENT END:VCALENDAR