What is a pushdown automata / stack machine? A pushdown automata is a state machine that instead of connecting various states to one another, handles state changes by stacking them on top of one ...

Pushdown automata are used in theories about what can be computed by machines. They are more capable than finite-state machines but less capable than Turing machines. Deterministic pushdown automata ...

Abstract: Visibly pushdown automata are pushdown automata whose pushdown operations are determined by the input symbol, where the input alphabet is partitioned into three parts for push, pop and local ...

Abstract: We prove that non-emptiness of timed register pushdown automata is decidable in doubly exponential time. This is a very expressive class of automata, whose transitions may involve state and ...

Automata theory and temporal logic together form a foundational pillar in the design and analysis of data processing systems. At its core, automata theory provides abstract models—ranging from finite ...