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DLT
2009
14 years 9 months ago
On Stateless Multihead Finite Automata and Multihead Pushdown Automata
A stateless k-head two-way deterministic finite automaton (k-head 2DFA), has only one state, hence the designation stateless. Its transitions depends solely on the symbols currentl...
Pierluigi Frisco, Oscar H. Ibarra
DNA
2004
Springer
168views Bioinformatics» more  DNA 2004»
15 years 5 months ago
Biomolecular Implementation of Computing Devices with Unbounded Memory
We propose a new way to implement (general) computing devices with unbounded memory. In particular, we show a procedure to implement automata with unbounded stack memory, push-down...
Matteo Cavaliere, Natasa Jonoska, Sivan Yogev, Ron...
FSTTCS
2006
Springer
15 years 3 months ago
Branching Pushdown Tree Automata
We observe that pushdown tree automata (PTAs) known in the literature cannot express combinations of branching and pushdown properties. This is because a PTA processes the children...
Rajeev Alur, Swarat Chaudhuri
CAV
2006
Springer
129views Hardware» more  CAV 2006»
15 years 3 months ago
Languages of Nested Trees
We study languages of nested trees--structures obtained by augmenting trees with sets of nested jump-edges. These graphs can naturally model branching behaviors of pushdown program...
Rajeev Alur, Swarat Chaudhuri, P. Madhusudan
SIGCSE
1999
ACM
145views Education» more  SIGCSE 1999»
15 years 4 months ago
Using JFLAP to interact with theorems in automata theory
An automata theory course can be taught in an interactive, hands-on manner using a computer. At Duke we have been using the software tool JFLAP to provide interaction and feedback...
Eric Gramond, Susan H. Rodger