Two remarks on Ramsey's theorem
✍ Scribed by Jaroslav Nes̆etr̆il; Vojtĕch Rödl
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 131 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
✦ Synopsis
We present a very simple proof of the fact (due to P. Erd~s and R. Rado) that Ram~ey's theorem doesn't hold for partitions of infinite subsets. We also present a proof of an induced Ramsey theorem for partitions of complete subgraphs (due to W. Deuber and authors) based on the theorem of R. Graham and B. Rothschild on parameter sets.
📜 SIMILAR VOLUMES
## FOR DIRK STRUIK ON HIS |00TH BIRTHDAY One of the prettiest results in the global theory of curves is a theorem of Jacobi (1842): The spherical image of the normal directions along a closed differentiable curve in space divides the unit sphere into regions of equal area. The statement of this t
## P(c, m). If the edges of a countable injinite complete graph G are exactly c-colored, then there exists a countable infinite complete subgraph H of G whose edges are exactly m-colored. The purpose of this note is to inquire as to which pairs c, m of positive integers make P(c, m) a true stateme