250 search results - page 5 / 50 » Constructing a Class of Symmetric Graphs |
DM
2007
13 years 8 months ago
2007
In this note, a constructive proof is given that the classes of proper interval graphs and unit interval graphs coincide, a result originally established by Fred S. Roberts. Addit...
FLOPS
2004
Springer
14 years 1 months ago
2004
Springer
This paper presents a complete (infinite) axiomatization for an algebraic construction of graphs, in which a finite fragment denotes the class of graphs with bounded tree width.
DISOPT
2006
13 years 8 months ago
2006
While it was known for a long time how to transform an asymmetric traveling salesman problem on the complete graph with n vertices into a symmetric traveling salesman problem on a...
COMBINATORICS
2006
13 years 8 months ago
2006
We give a parity reversing involution on noncrossing trees that leads to a combinatorial interpretation of a formula on noncrossing trees and symmetric ternary trees in answer to a...
DISOPT
2008
13 years 8 months ago
2008
At present, the most successful approach to solving large-scale instances of the Symmetric Traveling Salesman Problem to optimality is branch-and-cut. The success of branch-and-cu...