65 Years from Birth of Prof. Gheorghe S. Nadiu (1941-1998)

<p>In 1967, Gheorghe S. Nadiu publishes in “Mathematical studies and researches”, the article “On a method for the construction of Three - valued Łukasiewicz algebras” (Romania), cited in the book “Cylindric Algebras” by P. Monk, L. Henkin, A. Tarski. This article attracted the attention of Grigore C. Moisil, who offers him a scholarship, taking him out of production to make his doctorate at the Mathematic Institute of the Romanian Academy. He publishes more than 50 scientific papers in Theory of Algorithms, Logics of mathematics and Theory of Categories fields.</p><p>“Gheorghe S. Nadiu, by introducing the notion of quantified filter in a boolean monadic algebra, showed how one can obtain a trivalent Łukasiewicz algebra; also, he obtained an algebraic characterization of a completitude theorem from the intuitionist logic of Kripke.” (G. St. Andonie, Science History in Romania, Academic Publishing House, SRR, 1981).</p>