We extend the propositional dynamic logic PDL of Fischer and Ladner with a restricted kind of recursive programs using the formalism of visibly pushdown automata (Alur, Madhusudan...
d Abstract) Zhe Dang ¡£¢¤¢ , Oscar H. Ibarra ¥ , Pierluigi San Pietro ¦ , and Gaoyan Xie ¡ § School of Electrical Engineering and Computer Science Washington State Univers...
Zhe Dang, Oscar H. Ibarra, Pierluigi San Pietro, G...
Abstract. In this paper, I present the class of linear context free languages (LCFLs) with a class of non-deterministic one-way two-head (read only) automata, called non-determinis...
The paper focuses on the structure of fundamental sequences of ordinals smaller than ε0. A first result is the construction of a monadic second-order formula identifying a given ...
Visibly Pushdown Languages (VPLs), recognized by Visibly Pushdown Automata (VPAs), are a nicely behaved family of contextfree languages. It has been shown that VPAs are equivalent ...