It is proved that Mazurkiewicz's construction of a subset of the plane meeting each line at exactly two points can be generalized to any vector space over an infinite field. # 2002 Elsevier Science (USA) An old theorem of Mazurkiewicz [2] asserts that the plane R 2 has a subset which meets each line
The topology of Mazurkiewicz traces
β Scribed by Ralph Kummetz; Dietrich Kuske
- Book ID
- 104325665
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 402 KB
- Volume
- 305
- Category
- Article
- ISSN
- 0304-3975
No coin nor oath required. For personal study only.
β¦ Synopsis
The present paper characterizes the topological structure of real traces. This is done in terms of graph-theoretic properties of the underlying (possibly inΓΏnite) dependence alphabet. The topological space of real traces is shown to be homeomorphic to the direct product of (at most) the full binary tree and the full countably branching tree and one higher-dimensional grid. The occurrence of each of these factors depends on the existence of ΓΏnite non-trivial and of inΓΏnite connected components and on the number of isolated letters of the dependence alphabet.
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