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arXiv 0707.3607math.COmath.RA
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与无圈有向图相关的代数

Algebras associated to acyclic directed graphs

Vladimir Retakh, Robert Lee Wilson

摘要:

构造并研究了一类与广义分层图相关的代数,即顶点上具有秩函数的有向图。每一个有限有向无圈图允许可数个广义分层图的结构。我们在这样的代数中构造线性基并计算它们的希尔伯特级数。我们对广义分层图和与之相关的代数的兴趣是由它们与非交换环上多项式的因子分解的关系所激发的。

英文摘要:

We construct and study a class of algebras associated to generalized layered graphs, i.e. directed graphs with a ranking function on their vertices. Each finite directed acyclic graph admits countably many structures of a generalized layered graph. We construct linear bases in such algebras and compute their Hilbert series. Our interest to generalized layered graphs and algebras associated to those graphs is motivated by their relations to factorizations of polynomials over noncommutative rings.

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