We analyze the on-line chain partitioning problem as a two-person game. One person builds an order one point at a time. The other person responds by making an irrevocable assignment of the new point to a chain of a chain partition. Kierstead gave a strategy showing that width k orders can be on-line
Problems on chain partitions
β Scribed by Jerrold R. Griggs
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 419 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
Problems on chain partitions
Recently I have come across several fundamental problems concerning the existence of partitions of posets into chains satisfying certain conditions. Other problems of this sort have been open and frustrating researchers for years. 1 have collected these problems here, together with a few of my own, to give them wider exposure. The problems can be easily stated for a broad mathematical audience. It is likely that their solutions require techniques and insights which differ greatly from those normally employed in the contexts in which the problems were initially developed.
The presentation of the problems follows a review of the necessary notation and terminology. We first discuss problems about the poset of subsets of a finite set, and then we give problems for other families of posets.
π SIMILAR VOLUMES
Let P be a poset, consisting of all sets X [n]=[1, 2, ..., n] which contain at least one of a given collection F of 2-subsets of [n], ordered by inclusion. By modifying a construction of Greene and Kleitman, we show that if F is hamiltonian, that is, contains [1, 2], [2, 3], ..., [n&1, n] and [1, n]