Startseite Mathematik Classification of posets using zero-divisor graphs
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Classification of posets using zero-divisor graphs

  • Maryam Tavakkoli EMAIL logo , Arsham Borumand Saeid und Nosratollah Shajareh Poursalavati
Veröffentlicht/Copyright: 9. Februar 2018
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Abstract

Halaš and Jukl associated the zero-divisor graph G to a poset (X,≤) with zero by declaring two distinct elements x and y of X to be adjacent if and only if there is no non-zero lower bound for {x, y}. We characterize all the graphs that can be realized as the zero-divisor graph of a poset. Using this, we classify posets whose zero-divisor graphs are the same. In particular we show that if V is an n-element set, then there exist log2(n+1)knnk2kk1nk reduced zero-divisor graphs whose vertex sets are V.

MSC 2010: 05C25; 05C30; 05C75; 06A07

Communicated by Jiří Rachůnek


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Received: 2015-10-10
Accepted: 2016-4-6
Published Online: 2018-2-9
Published in Print: 2018-2-23

© 2017 Mathematical Institute Slovak Academy of Sciences

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