The signed-graphic representations of wheels and whirls

详细信息    查看全文

• 作者：Daniel Slilaty ; Hongxun Qin
• 关键词：Matroid ; Signed graph ; Wheel ; Whirl
• 刊名：Discrete Mathematics
• 出版年：2008
• 出版时间：28 May 2008
• 年：2008
• 卷：308
• 期：10
• 页码：1816-1825
• 全文大小：194 K

文摘

We characterize all of the ways to represent the wheel matroids and whirl matroids using frame matroids of signed graphs. The characterization of wheels is in terms of topological duality in the projective plane and the characterization of whirls is in terms of topological duality in the annulus.