Twenty-third Holiday Symposium: Algebraic Structures for Logic. Las Cruces, New Mexico. January 8–12, 1999.
The centerpiece of the program consisted of five one-hour lectures each by W. Blok and B. Jónsson.
Direct access to the Blok - Jónsson Lectures Google drive folder
Bjarni Jónsson Lecture 1.pdf An algebraic perspective Video1.1 Video1.2
Wim Blok Lecture 2.pdf Algebraizable logics Video2.3
Bjarni Jónsson Lecture 3 Polymodal logic Video3.1 Video3.2
Wim Blok Lecture 4 The Leibniz operator Video4.1
Bjarni Jónsson Lecture 5 Complex algebras and canonical extensions Video5.1 Video5.2
Wim Blok Lecture 6 Quasivarieties of logic Video6.1 Video6.2