论文标题
跨越射平的三角剖分的二分四牙
Spanning bipartite quadrangulations of triangulations of the projective plane
论文作者
论文摘要
我们完全表征具有跨越两分四角子图的投射平面的三角形。这是Kündgen和Ramamurthi（J Combin Theory Ser B 85，307--337，2002）的问题的肯定答案。
We completely characterize triangulations of the projective plane that have a spanning bipartite quadrangulation subgraph. This is an affirmative answer to a question by Kündgen and Ramamurthi (J Combin Theory Ser B 85, 307--337, 2002) for the projective planar case.
