By Fabrizio Frati, Michael Kaufmann, János Pach, Csaba D. Tóth, David R. Wood (auth.), Stephen Wismath, Alexander Wolff (eds.)

ISBN-10: 3319038400

ISBN-13: 9783319038407

ISBN-10: 3319038419

ISBN-13: 9783319038414

This ebook constitutes the completely refereed post-conference complaints of the twenty first overseas Symposium on Graph Drawing, GD 2013, held in Bordeaux, France, in September 2013. The forty two revised complete papers provided including 12 revised brief papers, three invited talks and 1 poster description have been rigorously reviewed and chosen from one hundred ten submissions. The papers are geared up in topical sections on upward drawings, planarity, past planarity, geometric representations, 3D et al., universality, functional graph drawing, subgraphs, crossings, geometric graphs and geographic networks, angular regulations, grids, curves and routes. The e-book additionally includes a brief description of the graph drawing contest.

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Extra resources for Graph Drawing: 21st International Symposium, GD 2013, Bordeaux, France, September 23-25, 2013, Revised Selected Papers

Sample text

Suppose that G admits an upward planar orientation G. Let Γ be an upward planar drawing of G. Remove edge (v, w) from G in Γ . Draw edge (x1 , x2 ) inside cycle Cf = (x1 , v, x2 , w), thus ensuring the planarity of the resulting drawing Γ of G , following closely the drawing of path (x1 , v, x2 ), thus ensuring the upwardness of Γ . Suppose that G admits an upward planar orientation G . Let Γ be an upward planar drawing of G . Remove (x1 , x2 ) from Γ . Since G is acyclic, Cf has three possible orientations in G .

Graph layouts can be extended to subdivisions where edges of the graph are replaced by paths. A graph is planar if and only if it has a subdivision that has a layout in two stacks [8]. In [1, 2], we have studied double-ended queue (deque) layouts: A deque has two ends, a head and a tail, and items can be inserted and removed at both sides. It can emulate two stacks and additionally allows for queue edges, i. , edges inserted and removed at opposite sides. In [2], we have shown that the surplus power of a deque in comparison to two stacks captures the difference between Hamiltonian paths and cycles: A graph is a deque (2-stack) graph if and only if it is the subgraph of a planar graph with a Hamiltonian path (cycle).

1(b) and (d), which crosses edge e1 . Edge e1 is inserted at the head at vertex 1 and e at the tail at vertex 2, i. , e1 e . At vertex 4, the deque has to be split such that e1 ∈ c10 and e ∈ c5 . e and vertex 5 is left of vertex 10, this is not possible. In However, as e1 general, we obtain the following lemma: Lemma 1. Let e and e be two forward edges in Cv such that e (e ) is removed at wi (wi ) or one of its descendants. It is possible to split Cv such that e ∈ cwi and e ∈ cwi if and only if e and e do not cross.

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Graph Drawing: 21st International Symposium, GD 2013, Bordeaux, France, September 23-25, 2013, Revised Selected Papers by Fabrizio Frati, Michael Kaufmann, János Pach, Csaba D. Tóth, David R. Wood (auth.), Stephen Wismath, Alexander Wolff (eds.)


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