Two double-exponential gaps for automata with a limited pushdown

被引：2
|
作者：
Bednarova, Zuzana [1 ]
Geffert, Viliam [1 ]
机构：
[1] Safarik Univ, Dept Comp Sci, Jesenna 5, Kosice 04154, Slovakia
来源：
INFORMATION AND COMPUTATION | 2017年 / 253卷
关键词：
Pushdown automata; Finite state automata; Two-way automata; Regular languages; Descriptional complexity; OPERATIONS;
D O I：
10.1016/j.ic.2016.06.005
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We shall consider nondeterministic and deterministic automata equipped with a limited pushdown (constant height NPDAS and DPDAS) as well as their two-way versions (constant height 2NPDAS and 2DPDAS). We show two double-exponential gaps for these devices, namely, (i) for complementing constant height one-way NPDAS and (if) for converting constant height 2NPDAS or 2DPDAS into one-way devices. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：381 / 398
页数：18
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