We consider words indexed by linear orderings. These extend finite, (bi-)infinite words and words on ordinals. We introduce finite automata and rational expressions for these w...
We describe an explicit simulation of 2-way nondeterministic automata by 1-way alternating automata with quadratic blow-up. We first describe the construction for automata on fin...
Groups are one of the most fundamental notions in mathematics. This paper provides a foundation of group theory in allegories. Almost all results in the paper can be applied to the...
Abstract. In this paper we propose a distributed algorithm for modelchecking LTL. In particular, we explore the possibility of performing nested depth-first search algorithm in di...
Abstract. This paper describes three program transformations that extend the scope of model checkers for Java programs to include distributed programs, i.e., multi-process programs...