Boolean Dimension and Tree-Width
Boolean Dimension and Tree-Width
复制标题
布尔维度和树宽度
DOI:
10.1007/s00493-020-4000-9
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发表时间:
2020
期刊:
影响因子:
1.1
通讯作者:
P. Micek
中科院分区:
文献类型:
--
作者:
S. Felsner;T. Mészáros;P. Micek
Dimension is a key measure of complexity of partially ordered sets. Small dimension allows succinct encoding. Indeed ifPhas dimension d, then to know whetherx≤yinPit is enough to check whetherx≤yin each of the d linear extensions of a witnessing realizer. Focusing on the encoding aspect, Nešetřil and Pudlák defined a more expressive version of dimension. A posetPhas Boolean dimension at mostdif it is possible to decide whetherx≤yinPby looking at the relative position ofxandyin onlydlinear orders on the elements ofP(not necessarilly linear extensions). We prove that posets with cover graphs of bounded tree-width have bounded Boolean dimension. This stands in contrast with the fact that there are posets with cover graphs of tree-width three and arbitrarily large dimension. This result might be a step towards a resolution of the long-standing open problem: Do planar posets have bounded Boolean dimension?
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DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
J. Nesetril;P. Pudlák
通讯作者:
P. Pudlák
影响因子:
0.4
作者:
G. Brightwell;P. G. Franciosa
通讯作者:
P. G. Franciosa
影响因子:
0.4
作者:
F. Barrera;Thomas Prag;Heather C. Smith;Libby Taylor;W. T. Trotter
通讯作者:
W. T. Trotter
DOI:
10.1016/0304-3975(90)90125-2
发表时间:
1990
期刊:
Theor. Comput. Sci.
影响因子:
--
作者:
G. Gambosi;J. Nesetril;M. Talamo
通讯作者:
M. Talamo
DOI:
--
发表时间:
2014
期刊:
J. Comb. Theory B
影响因子:
--
作者:
Bartosz Walczak
通讯作者:
Bartosz Walczak