300 search results - page 25 / 60 » Extension of a theorem of Whitney |
CCCG
2004
13 years 9 months ago
2004
We investigate a question initiated in the work of Sibley and Wagon, who proved that 3 colors suffice to color any collection of 2D parallelograms glued edge-to-edge. Their proof ...
COMGEO
2010
ACM
13 years 8 months ago
2010
ACM
Using a technique that Tverberg and Vrecica [TV93] discovered to give a surprisingly simple proof of Tverberg's theorem, we show the following extension of the centerpoint th...
COMBINATORICS
2004
13 years 7 months ago
2004
In 1958, Richard Guy proved that the number of partitions of n into odd parts greater than one equals the number of partitions of n into distinct parts with no powers of 2 allowed...
LPAR
2010
Springer
13 years 6 months ago
2010
Springer
The classic method of Nelson and Oppen for combining decision procedures requires the theories to be stably-infinite. Unfortunately, some important theories do not fall into this...
JCT
2011
13 years 2 months ago
2011
The neighborhood of a pair of vertices u, v in a triple system is the set of vertices w such that uvw is an edge. A triple system H is semi-bipartite if its vertex set contains a ...