On p 1 -total labelling of nic-planar graphs
Web16 de jan. de 2024 · A graph is NIC-planar if it admits a drawing in the plane with at most one crossing per edge and such that two pairs of crossing edges share at most one common end vertex. NIC-planarity generalizes IC-planarity, which allows a vertex to be incident to at most one crossing edge, and specializes 1-planarity, which only requires at most one … Web15 de jul. de 2024 · In this section, we always assume that G has a good drawing so that: (1) its NIC-planarity is preserved; (2) with the minimum number of crossings. A drawing …
On p 1 -total labelling of nic-planar graphs
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Web1 de abr. de 2007 · Abstract. A graph is called 1-planar if it can be drawn in the plane so that each its edge is crossed by at most one other edge. In the paper, we study the existence … Web20 de abr. de 2024 · The crossing number of a graph G, denoted by cr ( G ), is the minimum value of cr ( D )’s among all drawings D of G. A drawing D of a graph is called 1- planar if …
Web1 de mar. de 2012 · Equitable Coloring and Equitable Choosability of Graphs with Small Maximum Average Degree. Aijun Dong, Xin Zhang. Mathematics. Discuss. Math. Graph Theory. 2024. TLDR. This paper proves that if G is a graph such that mad (G) < 3, then G is equitably k-colorable and equitablyk- choosable where k ≥ max {Δ (G), 4}. WebA graph is NIC-planar if it admits a drawing in the plane with at most one crossing per edge and such that two pairs of crossing edges share at most one common end vertex. NIC-planarity generalizes IC-planarity, which allows a vertex to be incident to at most one crossing edge, and specializes 1-planarity, which only requires at most one crossing per …
Web1 de dez. de 2024 · 1. Introduction. All graphs considered here are simple, finite, and undirected. Throughout this paper, let C n and P n denote the cycle and the path on n vertices, respectively. A drawing of a graph G = (V, E) is a mapping D that assigns to each vertex in V a distinct point in the plane and to each edge uv in E a continuous arc … Web8 de jun. de 2024 · Optimal 1-planar graphs are 4-nice, and the result is the best possible. Lemma 3 ([18]). All 3-connected 1-planar graphs are 6-nice, and the result is the best possible. To bind the linear 2-arboricity of 1-planar graphs, Liu et al.[19] established the follow-ing structural theorem: Lemma 4 ([19]). Every 1-planar graph G with D 26 can be …
Web20 de abr. de 2024 · The crossing number of a graph G, denoted by cr ( G ), is the minimum value of cr ( D )’s among all drawings D of G. A drawing D of a graph is called 1- planar if each edge in D is crossed at most once. If a graph has a 1-planar drawing, then it is called 1- planar. The notion of 1-planarity was introduced in 1965 by Ringel [ 13 ], and since ...
Web16 de jan. de 2024 · Semantic Scholar extracted view of "NIC-planar graphs" by Christian Bachmaier et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 210,841,548 papers from all fields of science. Search. Sign In Create Free Account. how to start an exercise programWebWe study the following classes of beyond-planar graphs: 1-planar, IC-planar, and NIC-planar graphs. These are the graphs that admit a 1-planar, IC-planar, and NIC-planar drawing, respectively. A drawing of a graph is 1-planar if every edge is crossed at most once. A 1-planar drawing is IC-planar if no two pairs of crossing edges share a vertex ... how to start an expedition in outridersWebbounds on the density of NIC-planar graphs are 18 5 (n 2) [15] and 16 5 (n 2) [3,11] and both bounds are known to be tight for in nitely many values of n. Outer 1-planar graphs are another subclass of 1-planar graphs. They must admit a. 2 C. Bachmaier, F. J. Brandenburg, K. Hanauer how to start an exclusive clubWeb1 de dez. de 2024 · From Lemma 2, it is easy to observe that removing exactly one edge of each pair of edges that cross in D results in a maximal plane graph, where D is a NIC … react axios instanceWebThe purpose of this article is to study (p,1)-total labelling of NIC-planar graphs, especially the bounds for the (p,1)-total labelling number λT p as a function of the maximum degree … react axios timeoutWeb26 de jul. de 2024 · It is shown that there are infinitely maximal IC-planar graphs with n vertices and 3n-5 edges and thereby prove a tight lower bound on the density of this … how to start an exotic animal sanctuaryWeb16 de jan. de 2024 · The inclusion is proper, since every 1-planar graph is grid-crossing and 1-planar and RAC graphs are incomparable [21]. The incomparability has been extended … react axios pdf