We prove uniqueness of decomposition of a finite metric space into a product of metric spaces for a wide class of product operations. In particular, this gives the positive answer to the long-standing question of S. Ulam: 'If U ร U V ร V with U , V compact metric spaces, will then U and V be isometr
Prefibers and the cartesian product of metric spaces
โ Scribed by Claude Tardif
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 501 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
โฆ Synopsis
The properties of certain sets called prefibers in a metric space are used to show that the algebraic properties of the Cartesian product of graphs generalize to metric spaces.
Definition 1.1. (i) Let X = lJEIXi, for i E I, pri denotes the projection on Xi; for x E X, the i-fiber of X through x is the set
X(i, X) = {y E 5 Xi: prj(Y) = prj(X)
for all i E l{i}}.
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