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Topological groupoids: II. Covering morphisms and G-spaces

✍ Scribed by R. Brown; G. Danesh-Naruie; J. P. L. Hardy


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
769 KB
Volume
74
Category
Article
ISSN
0025-584X

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πŸ“œ SIMILAR VOLUMES


A notion of selective ultrafilter corres
✍ JosΓ© G. Mijares πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 240 KB

## Abstract We introduce the relation of __almost‐reduction__ in an arbitrary topological Ramsey space β„› as a generalization of the relation of almost‐inclusion on β„•^[∞]^. This leads us to a type of ultrafilter 𝒰 βŠ† β„› which corresponds to the well‐known notion of __selective ultrafilter__ on β„•. The