On the structure of one-tape nondeterministic turing machine time hierarchy
On the structure of one-tape nondeterministic turing machine time hierarchy
复制标题
一盘非确定性图灵机时间层次结构的研究
DOI:
10.1016/0304-3975(85)90165-3
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发表时间:
1985
期刊:
影响因子:
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通讯作者:
Kojiro Kobayashi
中科院分区:
文献类型:
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作者:
Kojiro Kobayashi
We show that if the number of available states is fixed and is sufficiently large, then one-tape nondeterministic Turing machines can accept more sets within time bound a 2 ƒ (n) than within a 1 ƒ (n), for 0< a 1< a 2. Here, ƒ (n) is any function of the form n b 0 (log n) b 1 (log 2 n) b 2…(log h n) b h (b 0,…, b h are rational numbers) with order n log n and n 2. Crossing sequences and Kolmogorov complexity are used to prove it.