In this paper, we consider the following Ramsey theoretic problem for finite ordered sets: For each II 3 1, what is the least integer f(n) so that for every ordered set P of width it, there exists an ordered set Q of width f(n) such that every 2-coloring of the points of Q produces a monochromatic
A Brylawski decomposition for finite ordered sets
β Scribed by Richard P. Stanley
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 495 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstmct# A decomposition is given for fini*.e ordered sets P and is shown to bc a unique decomposition in the sense of Brylawski. Hence there exists a universal invariant g(P) for this decomposition, and we c(Dmpute g(P) explicitly. Some modifications of this decomposition are considered; in particular, one which forms a bidecomposition toecther with disjoint union.
π SIMILAR VOLUMES
## Abstract Several decomposition types of orders and related discrete structures have been investigated so far. In this paper, we present a decomposition for orders based on partial βignoringβ of the order. Structures that are in a certain sense βprimeβ turn out to be decomposable. The relation to
A set S in 1 :" is said to he X,-convex if and only if S does not contain a visually independent subset having cardinality h', . It is natural tts ask when an h',-convex set may be expressed as a countable unI.,n of convex sets. Here i! is proved that if S is a closed h',-convex set in the plane and