Closure and nonclosure properties of the classes of compressible and rankable sets
Closure and nonclosure properties of the classes of compressible and rankable sets
复制标题
可压缩集和可排序集类的闭包和非闭包性质
DOI:
10.1016/j.jcss.2021.02.004
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发表时间:
2021
影响因子:
1.1
通讯作者:
Rubery, Daniel
中科院分区:
文献类型:
--
作者:
Abascal, Jackson;Hemaspaandra, Lane A.;Maimon, Shir;Rubery, Daniel
The rankable and the compressible sets have been studied for more than a quarter of a century. We ask whether these classes are closed under the most important boolean and other operations. We study this question for both polynomial-time and recursion-theoretic compression and ranking, and for almost every case arrive at a Closed, a Not-Closed, or a Closed-Iff-Well-Known-Complexity-Classes-Collapse result. Although compression and ranking classes are capturing something quite natural about the structure of sets, it turns out that these classes are quite fragile with respect to closure properties, and many fail to possess even the most basic of closure properties. For example, we show that with respect to the join (aka disjoint union) operation: the P-rankable sets are not closed, whether the semistrongly P-rankable sets are closed is closely linked to whether P= UP∩ coUP, and the strongly P-rankable sets are closed.
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影响因子:
1
作者:
Martínez, C;Molinero, X
通讯作者:
Molinero, X
DOI:
10.1145/22145.22194
发表时间:
1985-12
期刊:
SIAM J. Comput.
影响因子:
--
作者:
A. Goldberg;M. Sipser
通讯作者:
A. Goldberg;M. Sipser
DOI:
10.1016/0304-3975(91)90023-u
发表时间:
1991
期刊:
Theor. Comput. Sci.
影响因子:
--
作者:
A. Bertoni;M. Goldwurm;N. Sabadini
通讯作者:
N. Sabadini
影响因子:
4.7
作者:
Jackson Abascal;L. Hemaspaandra;S. Maimon;Daniel Rubery
通讯作者:
Daniel Rubery
DOI:
10.1137/0215053
发表时间:
1986
期刊:
SIAM J. Comput.
影响因子:
--
作者:
J. Balcázar;R. V. Book;U. Schöning
通讯作者:
U. Schöning