State Complexity of Union and Intersection of Finite Languages
State Complexity of Union and Intersection of Finite Languages
复制标题
有限语言的并集和交集的状态复杂性
DOI:
10.1142/s0129054108005838
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
K. Salomaa
中科院分区:
文献类型:
--
作者:
Yo;K. Salomaa
We investigate the state complexity of union and intersection for finite languages. Note that the problem of obtaining the tight bounds for both operations was open. We compute the upper bounds based on the structural properties of minimal deterministic finite-state automata (DFAs) for finite languages. Then, we show that the upper bounds are tight if we have a variable sized alphabet that can depend on the size of input DFAs. In addition, we prove that the upper bounds are unreachable for any fixed sized alphabet.