literal: Let p be a proposition. Then p and -p are literals. clause: A clause is a disjunction of literals. Horn Clause: A Horn Clause is a clause in which there is at most one positive literal. definite clause: A definite clause is a Hom Clause in which there is exactly one positive literal. A definite clause such as can also be written as We call pi the head of the clause, and the conjunction...

The structure of the monoid of autarkies for clause-sets is investigated (autarkies are generalizations of satisfying (truth) assignments). The notion of a \plain clause-set" is introduced, where every clause is usable by some resolution refutation, and it is shown that a clause-set is plain ii it has no non-trivial autarky. Every clause-set has a unique decomposition into a plain sub-clause-se...

The paper describes in detail and employs one table six discussions to compare expressions of future meaning Vietnamese English declaratives find out their differences similarities. findings are the basis for giving some advice learners English. neither distinguishes nor grammatical means express various shades meaning. A lexical like sẽ, định, tính, or sắp, a combination two more định tính dự ...

The goal of the present paper is to identify some of the differences in the intonation of Catalan and Spanish as spoken in Majorca. The tonal features we investigated were: (1) utterance-final pitch accents in broad focus declaratives, and (2) local contrastive focus pitch accents. Previous research, mostly on related varieties, such as Central Catalan and Castilian Spanish, had indirectly sugg...