Non-Closure Properties of Multi-Inkdot Nondeterministic Turing Machines with Sublogarithmic Space

Non-Closure Properties of Multi-Inkdot Nondeterministic Turing Machines with Sublogarithmic Space

This paper investigates the closure properties of multi-inkdot nondeterministic Turing machines with sublogarithmic space. We show that the class of sets accepted by the Turing machines is not closed under concatenation with regular set, Kleene closure, length-preserving homomorphism, and intersecti...

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Veröffentlicht in:IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Communications and Computer Sciences, 2020/10/01, Vol.E103.A(10), pp.1234-1236
Hauptverfasser: YOSHINAGA, Tsunehiro, SAKAMOTO, Makoto
Format: Artikel
Sprache:eng
Schlagworte:
closure property
Homomorphisms
multi-inkdot Turing machines
nondeterministic Turing machines
sublogarithmic space complexity
Turing machines
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Zusammenfassung:This paper investigates the closure properties of multi-inkdot nondeterministic Turing machines with sublogarithmic space. We show that the class of sets accepted by the Turing machines is not closed under concatenation with regular set, Kleene closure, length-preserving homomorphism, and intersection.
ISSN:0916-8508
1745-1337
DOI:10.1587/transfun.2019DML0001