Abstract. There are a range of abstractions used for both modelling and proof modern computational systems. While these abstractions may have been devised for specific purposes, t...
some studies linked the computational power of abstract computing systems based on multiset rewriting to Petri nets and the computation power of these nets to pology. In turn, the ...
—We use the recently developed theory of forest algebras to find algebraic characterizations of the languages of unranked trees and forests definable in various logics. These i...
Mikolaj Bojanczyk, Howard Straubing, Igor Walukiew...
We develop a polarised variant of Curien and Herbelin’s ¯λµ˜µ calculus suitable for sequent calculi that admit a focalising cut elimination (i.e. whose proofs are focalised ...
Concerning the set of rooted binary trees, one shows that Higman’s Lemma and Dershowitz’s recursive path ordering can be used for the decision of its maximal order type accordi...