178 search results - page 17 / 36 » combinatorics 2007 |
COMBINATORICS
2007
13 years 11 months ago
2007
Sommerville and Davies classified the spherical triangles that can tile the sphere in an edge-to-edge fashion. However, if the edge-to-edge restriction is relaxed, there are othe...
COMBINATORICS
2007
13 years 11 months ago
2007
For a permutation π = π1π2 · · · πn ∈ Sn and a positive integer i ≤ n, we can view π1π2 · · · πi as an element of Si by order-preserving relabeling. The j-set of ...
COMBINATORICS
2007
13 years 11 months ago
2007
A permutation class which is closed under pattern involvement may be described in terms of its basis. The wreath product construction X Y of two permutation classes X and Y is als...
COMBINATORICS
2007
13 years 11 months ago
2007
In 2006, Smith et al. published a new table of constant weight codes, updating existing tables originally created by Brouwer et al. This paper improves upon these results by fill...
COMBINATORICS
2007
13 years 11 months ago
2007
It is well-known that Sturmian sequences are the non ultimately periodic sequences that are balanced over a 2-letter alphabet. They are also characterized by their complexity: the...