Computing Research Laboratory, Bell-Northern Research P.O. Box 3511, Station C, Ottawa Canada K1Y 4H7 Telephone 613-763-3841, Fax 613-763-4222 © Bell-Northern Research 1989 The data herein are not to be used or disclosed without the consent of The Computing Research Laboratory. This note is a working paper intended for limited circulation and discussion. No departmental or corporate approval or commitment is implied, unless such approval or commitment is expressly given in a covering document. TITLE : A Prolog Implementation of an Analytic Tableau Theorem Prover for the Propositional Calculus REFERENCE : 89024 DATE : 3 May 1989 AUTHOR : André Vellino ABSTRACT This paper describes an improvement on the analytic tableau method which simulates SL-resolution. It is implemented by a short and elegant Prolog program which is relatively efficient.