In 1959, a paper appeared in The Journal of Symbolic Logic, with the unimpressive-sounding title “A Completeness Theorem in Modal Logic.” A completeness theorem is a guarantee that every universal ...
Saul Kripke, a math prodigy and pioneering logician whose revolutionary theories on language qualified him as one of the 20th century’s greatest philosophers, died on Sept. 15 in Plainsboro, New ...