44 search results - page 5 / 9 » On the maximum number of edges in topological graphs with no... |
WEA
2010
Springer
14 years 2 months ago
2010
Springer
A tanglegram consists of a pair of (not necessarily binary) trees T1, T2 with leaf sets L1, L2. Additional edges, called tangles, may connect nodes in L1 with those in L2. The task...
FOCS
2008
IEEE
14 years 2 months ago
2008
IEEE
We prove that approximating the Max Acyclic Subgraph problem within a factor better than 1/2 is Unique-Games hard. Specifically, for every constant ε > 0 the following holds:...
COMGEO
2011
ACM
13 years 2 months ago
2011
ACM
A drawing of a graph in the plane is called a thrackle if every pair of edges meets precisely once, either at a common vertex or at a proper crossing. Let t(n) denote the maximum ...
CORR
2008
Springer
13 years 8 months ago
2008
Springer
Given a planar graph G, we consider drawings of G in the plane where edges are represented by straight line segments (which possibly intersect). Such a drawing is specified by an i...
PKDD
2009
Springer
14 years 2 months ago
2009
Springer
We propose a new, recursive model to generate realistic graphs, evolving over time. Our model has the following properties: it is (a) flexible, capable of generating the cross pro...