… , based on spanning trees, for … skewness of the n-dimensional hypercube Qn is also derived. Finally, we explore the relationship between the skewness and crossing number of a graph. …
… We also consider graphs with girth 5 or higher. In Section 3 we show that among all graphs requiring n colors, the complete graphon n vertices Kn is the one with the smallest skewness…
G Farr, P Eades - Graphs and Combinatorics, 2003 - Springer
… two subgraphs in the cutset sum may often not be similar in size). It might be hoped that our results onskewness may be usefully applied to them, or to subclasses of sparse graphs with …
… provide a survey onskewness of graphs and introduce some graphs which are π − skew. … We prove some results concerning the skewness for the join of two graphs. We then use these …
C Denglan, H Yaoping - the electronic journal of combinatorics, 2013 - emis.de
… a directed graph. G is called the underlying graph of Gσ and we denote by S(Gσ) the skew-adjacency matrix of Gσ and its spectrum Sp(Gσ) is called the skew-spectrum of Gσ. In this …
… For simplicity, we impose the following conditions on a drawing: (a) if two edges share an interior point p, then they cross at p; (b) any two edges of a drawing have only a finite number …
PC Kainen - arXiv preprint arXiv:2501.02400, 2025 - arxiv.org
… In this section, we show that, for hypercubes, skewness and Euler excess are equal on all orientable surfaces. Arguments are based on a natural embedding of the hypercube into three-…
… In this paper we focus on the problem of determining the minimum rank of real skew-symmetric matrices described by a unicyclic graph over real field R. Let G be a simple graph of …
GL Chia, CL Lee - Bulletin of the Malaysian Mathematical Sciences …, 2016 - Springer
… The skewness of \(G\), denoted \(sk(G)\), is defined to be the minimum number of … graph. We show, by constructions, the existence of \(5\)-regular graphson \(n\) vertices with skewness \(…