Abstract. aRa is an automatic theorem prover for various kinds of relation algebras. It is based on Gordeev’s Reduction Predicate Calculi for n-variable logic (RPCn) which allow ...
We provide a logical speci cation of set predicates ndall and bagof of Prolog. The speci cation is given in proof theoretic terms, and pertains to any SLD resolution based language...
Conditional Equational Programming is an elegant way to uniformly integrate important features of functional and logic programming. Efficientmethods for equation solving are thus ...
We give a new proof showing that it is not possible to define in monadic second-order logic (MSO) a choice function on the infinite binary tree. This result was first obtained by G...
The concept of diversity was successfully introduced for recommender-systems. By displaying results that are not only similar to a target problem but also diverse among themselves,...