ICALP
2011
Springer
13 years 3 months ago
2011
Springer
Competitive analysis is the established tool for measuring the output quality of algorithms that work in an online environment. Recently, the model of advice complexity has been in...
TCS
2010
13 years 10 months ago
2010
We give an O(n2 m + nm2 + m2 log m) time and O(n2 + m2 ) space algorithm for finding the shortest traveling salesman tour through the vertices of two simple polygonal obstacles i...
COMBINATORICS
2004
14 years 9 days ago
2004
A configuration (pq, nk) is a collection of p points and n straight lines in the Euclidean plane so that every point has q straight lines passing through it and every line has k p...
CORR
2007
Springer
14 years 12 days ago
2007
Springer
We determine periodic and aperiodic points of certain piecewise affine maps in the Euclidean plane. Using these maps, we prove for λ ∈ { ±1± √ 5 2 , ± √ 2, ± √ 3} that...
COMBINATORICS
2006
14 years 14 days ago
2006
An astral configuration (pq, nk) is a collection of p points and n straight lines in the Euclidean plane where every point has q straight lines passing through it and every line h...
IPCO
2001
14 years 1 months ago
2001
Problem (Extended Abstract) Cliff Stein David P. Wagner Dartmouth College Computer Science Technical Report TR2000-367 May 9, 2000 The problem of traversing a set of points in the...
COMPGEOM
1996
ACM
14 years 4 months ago
1996
ACM
Given a simple arrangementof n pseudolines in the Euclidean plane, associate with line i the list i of the lines crossing i in the order of the crossings on line i. i = ( i 1; i 2;...
WG
1998
Springer
14 years 4 months ago
1998
Springer
The number of triangles in arrangements of lines and pseudolines has been object of some research. Most results, however, concern arrangements in the projective plane. In this arti...
FOCS
2008
IEEE
14 years 7 months ago
2008
IEEE
We give a randomized O(n polylog n)-time approximation scheme for the Steiner forest problem in the Euclidean plane. For every fixed ǫ > 0 and given n terminals in the plane ...