226 search results - page 9 / 46 » Lower bounds on the obstacle number of graphs |
SIAMDM
2010
13 years 2 months ago
2010
Let G be a graph with n vertices and independence number . Hadwiger's conjecture implies that G contains a clique minor of order at least n/. In 1982, Duchet and Meyniel prov...
FOCS
2008
IEEE
14 years 2 months ago
2008
IEEE
We introduce several generalizations of classical computer science problems obtained by replacing simpler objective functions with general submodular functions. The new problems i...
ISSS
2000
IEEE
14 years 6 days ago
2000
IEEE
This paper addresses the problem of estimating lower bounds on the power consumption in scheduled data flow graphs with a fixed number of allocated resources prior to binding. T...
COMGEO
2007
ACM
13 years 7 months ago
2007
ACM
The slope-number of a graph G is the minimum number of distinct edge slopes in a straight-line drawing of G in the plane. We prove that for Δ 5 and all large n, there is a Δ-reg...
ESA
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Classical network flow theory allows decomposition of flow into several chunks of arbitrary sizes traveling through the network on different paths. In the first part ...