0-分配格的零化子图

IF 0.6 Q3 MATHEMATICS Transactions on Combinatorics Pub Date : 2018-09-01 DOI:10.22108/TOC.2017.104919.1507
S. Bagheri, Mahtab Koohi Kerahroodi
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引用次数: 0

摘要

在本文中,对于晶格$mathcal L$,我们定义并研究了$mathcal L$的湮灭子图$mathfrak {ag} (mathcal L)$,它包含$mathcal L$的零因子图作为子图。同时,对于一个0分配格,我们研究了图的正则性、连通性、直径、周长及其支配数等性质。此外,对于具有$Z(mathcal L)neqlbrace 0rbrace的分配格$mathcal L$,我们证明$mathfrak {ag} (mathcal L) = Gamma(mathcal L)$当且仅当$mathcal L$恰好有两个最小素数理想。除其他外,我们考虑晶格$mathcal L=(mathcal D(n),|)$的湮灭子图$mathfrak {ag} (mathcal L)$包含一个非素数自然数$n$的所有正因子,我们计算了一些不变量,如该图的支配数,团数和色数。同样,对于这个格,我们研究了一些特殊情况,其中$mathfrak {ag} (mathcal D(n))$或$Gamma(mathcal D(n))$是平面的、欧拉的或哈密顿的。
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The annihilator graph of a 0-distributive lattice
‎‎In this article‎, ‎for a lattice $mathcal L$‎, ‎we define and investigate‎ ‎the annihilator graph $mathfrak {ag} (mathcal L)$ of $mathcal L$ which contains the zero-divisor graph of $mathcal L$ as a subgraph‎. ‎Also‎, ‎for a 0-distributive lattice $mathcal L$‎, ‎we study some properties of this graph such as regularity‎, ‎connectedness‎, ‎the diameter‎, ‎the girth and its domination number‎. ‎Moreover‎, ‎for a distributive lattice $mathcal L$ with $Z(mathcal L)neqlbrace 0rbrace$‎, ‎we show that $mathfrak {ag} (mathcal L) = Gamma(mathcal L)$ if and only if $mathcal L$ has exactly two minimal prime ideals‎. ‎Among other things‎, ‎we consider the annihilator graph $mathfrak {ag} (mathcal L)$ of the lattice $mathcal L=(mathcal D(n),|)$ containing all positive divisors of a non-prime natural number $n$ and we compute some invariants such as the domination number‎, ‎the clique number and the chromatic number of this graph‎. ‎Also‎, ‎for this lattice we investigate some special cases in which $mathfrak {ag} (mathcal D(n))$ or $Gamma(mathcal D(n))$ are planar‎, ‎Eulerian or Hamiltonian.
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来源期刊
CiteScore
0.80
自引率
0.00%
发文量
2
审稿时长
30 weeks
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