Volume 3, Issue 1

 

ارسال های اخیر

  • The principal ideal subgraph of the annihilating-ideal graph of commutative rings 

    Taheri, Reza؛ Tehranian, Abolfazl (Yazd University, 2016-02-01)
    Let $R$ be a commutative ring with identity and $mathbb{A}(R)$ be the set   of ideals of $R$ with non-zero annihilators. In this paper, we first introduce and investigate the principal ideal subgraph of the annihilating-ideal ...

  • Exact sequences of extended $d$-homology 

    Kazemi Baneh, Mohammad Zaher؛ Hosseini, Seyed Naser (Yazd University, 2016-02-01)
    In this article, we show the existence of certain exact sequences with respect to two homology theories, called d-homology and extended d-homology. We present sufficient conditions for the existence of long exact extended ...

  • The concept of logic entropy on D-posets 

    Mohammadi, Uosef (Yazd University, 2016-02-01)
    In this paper, a new invariant called {it logic entropy} for dynamical systems on a D-poset is introduced. Also, the {it conditional logical entropy} is defined and then some of its properties are studied.  The invariance ...

  • A note on the order graph of a group 

    Dorbidi, Hamid Reza (Yazd University, 2016-02-01)
    The order graph of a group $G$, denoted by $Gamma^*(G)$, is a graph whose vertices are subgroups of $G$ and two distinct vertices $H$ and $K$ are adjacent if and only if $|H|big{|}|K|$ or $|K|big{|}|H|$. In this ...

  • HX-hypergroups associated with the direct products of some ${bf Z}/n {bf Z}$ 

    Corsini, Piergiulio (Yazd University, 2016-02-01)
    One studies the $HX$-hypergroups, corresponding to the Chinese hypergroups associated with the direct products of some ${bf Z}/n {bf Z},$ calculating their fuzzy grades.