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arXiv 1802.03129math.ACmath.CO
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平衡单纯复形的秩选择与深度条件

Rank Selection and Depth Conditions for Balanced Simplicial Complexes

Brent Holmes, Justin Lyle

摘要:

证明了平衡单纯复形的一些新的秩选择定理。具体地说,我们证明了平衡单纯复形的秩选择子复形满足塞尔的条件$(S_{\ell})$保留$(S_{\ell})$。我们还提供了一个公式的深度的平衡单纯复形的减少同源的秩选择的子复形。通过传递到一个重心重分,我们的结果给出了信息的塞尔条件和深度的任何单纯复形。我们的结果扩展了斯坦利,Munkres和Hibi证明的深度秩选择定理。

英文摘要:

We prove some new rank selection theorems for balanced simplicial complexes. Specifically, we prove that rank selected subcomplexes of balanced simplicial complexes satisfying Serre's condition $(S_{\ell})$ retain $(S_{\ell})$. We also provide a formula for the depth of a balanced simplicial complex in terms of reduced homologies of its rank selected subcomplexes. By passing to a barycentric subdivision, our results give information about Serre's condition and the depth of any simplicial compex. Our results extend rank selection theorems for depth proved by Stanley, Munkres, and Hibi.

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