It is known that every e ective (global-) descent morphism of topological spaces is an e ective Γ etale-descent morphism. On the other hand, in the predecessor of this paper we gave examples of: β’ a descent morphism that is not an e ective Γ etale-descent morphism; β’ an e ective Γ etale-descent mo
β¦ LIBER β¦
Finite preorders and Topological descent I
β Scribed by George Janelidze; Manuela Sobral
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 178 KB
- Volume
- 175
- Category
- Article
- ISSN
- 0022-4049
No coin nor oath required. For personal study only.
β¦ Synopsis
It is shown that the descent constructions of ΓΏnite preorders provide a simple motivation for those of topological spaces, and new counter-examples to open problems in Topological descent theory are constructed.
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