Abstract. We propose a new class of tree automata, called tree automata with normalization (TAN). This framework extends equational tree automata, and improved the results of them:...
In 1973, Parikh proved a speed-up theorem conjectured by G¨odel 37 years before: there exist arithmetical formulæ that are provable in first order arithmetic, but whose shorter ...
A context-freegrammar(CFG)in GreibachNormalForm coincides,in anothernotation,witha system of guarded recursion equations in Basic Process Algebra. Hence to each CFG a process can b...
Jos C. M. Baeten, Jan A. Bergstra, Jan Willem Klop
This paper describes formalizations of Tait’s normalization proof for the simply typed λ-calculus in the proof assistants Minlog, Coq and Isabelle/HOL. From the formal proofs p...