Connected Feedback Vertex Set in Planar Graphs
Connected Feedback Vertex Set in Planar Graphs
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平面图中的连通反馈顶点集
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
René Sitters
中科院分区:
文献类型:
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作者:
A. Grigoriev;René Sitters
We study the problem of finding a minimum tree spanning the faces of a given planar graph. We show that a constant factor approximation follows from the unconnected version if the minimum degree is 3. Moreover, we present a polynomial time approximation scheme for both the connected and unconnected version.