Graphs, Syzygies, and Multivariate Splines

Graphs, Syzygies, and Multivariate Splines
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图、Syzygies 和多元样条

DOI:
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发表时间:
2004
影响因子:
0.8
通讯作者:
L. Rose
L. Rose
中科院分区:
数学3区
文献类型:
--
作者:
L. Rose

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摘要 多面体复体上的样条模可以被视为合合模 它的对偶图, 用线性形式的幂加权的边。当线性形式的赋值为 边缘满足某些条件, 我们可以在不改变同构的情况下将图分解为不相交的圈 syzygy模块的类。因此,我们可以使用此分解来计算 模的同调维数和Hilbert级数。我们提供备用 证明了Schenck和Stillman的一些结果,并将这些结果推广到 多面体情况我们还提供的例子说明的作用,几何 在确定合宿模块中起作用。
Abstract The module of splines on a polyhedral complex can be viewed as the syzygy module of its dual graph with edges weighted by powers of linear forms. When the assignment of linear forms to edges meets certain conditions, we can decompose the graph into disjoint cycles without changing the isomorphism class of the syzygy module. Thus we can use this decomposition to compute the homological dimension and the Hilbert series of the module. We provide alternate proofs of some results of Schenck and Stillman, extending those results to the polyhedral case. We also provide examples which illustrate the role that geometry plays in determining the syzygy module.