Computer Science – Logic in Computer Science
Scientific paper
1999-06-04
Computer Science
Logic in Computer Science
63 pages, LaTeX2e. Extended abstract presented at 26-th ICALP, 1999
Scientific paper
String transductions that are definable in monadic second-order (mso) logic (without the use of parameters) are exactly those realized by deterministic two-way finite state transducers. Nondeterministic mso definable string transductions (i.e., those definable with the use of parameters) correspond to compositions of two nondeterministic two-way finite state transducers that have the finite visit property. Both families of mso definable string transductions are characterized in terms of Hennie machines, i.e., two-way finite state transducers with the finite visit property that are allowed to rewrite their input tape.
Engelfriet Joost
Hoogeboom Hendrik Jan
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