Let G be a graph and let V(G) be the vertex set of G. Define the neighborhood complex N(G) as the simplicial complex whose simplices are those subsets of V(G) which have a common neighbor.

一个图G的邻域复形是以G的顶点为顶点，以G的具有公共邻接顶点的顶点子集为单形的抽象复形。

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n my view this is increasingly how SaaS vendors are going to deliver clients - especially for complex enterprise applications.

依我看来，SaaS厂商如何部署客户端的问题越来越重要——尤其是复杂的企业应用。

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Although the algorithm itself is complex, it is extremely efficient in practice and operates in o (log n) time.

虽然算法本身很复杂，但它在实践应用中的效率很高，可以按照o (log n)的时间操作。

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There are 16 skeleton tracks in the world, one of which is part of the U.S. Olympics Sports Complex in Lake Placid, N.

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Bacharach's lush pop songs from the 1960s and '70s, with their complex harmonies and rhythms, were very different from the three-chord rock 'n' roll tunes that were popular at the time.

NPR: Close To You: Burt Bacharach In Concert

The former U.N. secretary-general said the situation in Syria is "much more complex" than that in Libya or other nations.

CNN: Annan: Syrians 'want to get on with their lives'