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arXiv 0802.1226cs.LO
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利用全自动机技术求Ω-自动机可补性的下界

Lower Bounds for Complementation of omega-Automata Via the Full Automata Technique

Qiqi Yan

摘要:

在本文中,我们首先介绍了一个下界技术的状态复杂性的转换的自动机。也就是说,我们建议首先考虑类的全自动机在下界分析,然后通过字母表替换减少大字母表的大小。然后将这种技术应用于非确定ω-自动机的补问题,得到了几个下界结果。特别地,我们证明了Büchi可补的一个ω((0.76n)^n)下界,这个下界对非确定性omega-自动机的几乎所有可补或确定化变换都成立;证明了广义Büchi自动机可补的一个最优(ω(nk))^n下界,这个下界对Streett自动机也成立.

英文摘要:

In this paper, we first introduce a lower bound technique for the state complexity of transformations of automata. Namely we suggest first considering the class of full automata in lower bound analysis, and later reducing the size of the large alphabet via alphabet substitutions. Then we apply such technique to the complementation of nondeterministic ω-automata, and obtain several lower bound results. Particularly, we prove an ω((0.76n)^n) lower bound for Büchi complementation, which also holds for almost every complementation or determinization transformation of nondeterministic omega-automata, and prove an optimal (ω(nk))^n lower bound for the complementation of generalized Büchi automata, which holds for Streett automata as well.

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