‎TARSKI, ALFRED and BJARNI JÓNSSON.‎
‎Direct Decompositions of Finite Algrebraic Systems.[Notre Dame Mathematical Lectures. Number 5]. - [THE STARTING POINT OF JÓNSSON-TARSKI ALGEBRAS]‎

‎(Michigan), 1947. 8vo. Ogiginal printed wrappers, black cloth back-strip. A nice and clean copy of this lithoprinted publication. (6), 64 pp. + 2 leaves of maschine-written (probably mimeographed) corrections laid in loose.‎

Reference : 42323

‎First printing of Tarski and Jónsson's important first joint publication, which constitutes the starting point of the influential Jónsson-Tarski algebras and the Jónsson-Tarski duality. The important Icelandic mathematician and logician Bjarni Jónsson (born 1920) received his PhD the year before the present publication at the University of Berkely, under the supervision of Alfred Tarski, the great Polish-American who has contributed seminally to the fields of mathematics and logic in a number of ways, and who together with Frege, Russell and Gödel now ranks as the most important contributor to the field of logic. He is thus considered one of the four greatest logicians of all times.‎