On the geometry of graphs with a forbidden minor
On the geometry of graphs with a forbidden minor
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关于带有禁止次要图的几何
DOI:
10.1145/1536414.1536450
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
Anastasios Sidiropoulos
中科院分区:
文献类型:
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作者:
James R. Lee;Anastasios Sidiropoulos
We study the topological simplification of graphs via random embeddings, leading ultimately to a reduction of the Gupta-Newman-Rabinovich-Sinclair (GNRS) L1 embedding conjecture to a pair of manifestly simpler conjectures. The GNRS conjecture characterizes all graphs that have an O(1)-approximate multi-commodity max-flow/min-cut theorem. In particular, its resolution would imply a constant factor approximation for the general Sparsest Cut problem in every family of graphs which forbids some minor. In the course of our study, we prove a number of results of independent interest.