球积的连通和与极小非Golod复形
Connected sums of sphere products and minimally non-Golod complexes
摘要：
我们表明，如果与单纯复形$K$相关的矩角复形$\mathcal{Z}_K$同伦等价于每个产品中有两个球的球产品的连接和，则$K$分解为$n$ -单纯形$Δ^n$和极小非Golod复形的单纯连接。特别地，我们证明了对于每一个与球面的二重积的连通和同胚的矩角复形$\mathcal{Z}_K$，$K$是极小非Golod的，从而回答了Grbić，Panov，Theriault和Wu的一个问题.
英文摘要：
We show that if the moment-angle complex $\mathcal{Z}_K$ associated to a simplicial complex $K$ is homotopy equivalent to a connected sum of sphere products with two spheres in each product, then $K$ decomposes as the simplicial join of an $n$-simplex $Δ^n$ and a minimally non-Golod complex. In particular, we prove that $K$ is minimally non-Golod for every moment-angle complex $\mathcal{Z}_K$ homeomorphic to a connected sum of two-fold products of spheres, answering a question of Grbić, Panov, Theriault and Wu.
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