Grothendieck topologies from unique factorisation systems

Grothendieck topologies from unique factorisation systems
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来自独特因式分解系统的格洛腾迪克拓扑

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发表时间:
2009
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通讯作者:
M. Anel
M. Anel
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作者:
M. Anel

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这项工作提供了一种将Grothendieck站点结构与(本地可表示的)类别相关联的方法,该类别具有其箭头的独特因式分解系统。特别是,这恢复了Zariski和Etale拓扑以及与Voevodsky的CD结构相关的其他拓扑。由于唯一的分解系统在代数几何之外也很常见,同样的构造适用于一些新的上下文,其中它与否则被削弱的已知结构相关。文中详细介绍了代数几何中的情况,只勾画了其他例子。
This work presents a way to associate a Grothendieck site structure to a (locally presentable) category endowed with a unique factorisation system of its arrows. In particular this recovers the Zariski and Etale topologies and others related to Voevodsky’s cd-structures. As unique factorisation systems are also frequent outside algebraic geometry, the same construction applies to some new contexts, where it is related with known structures dened otherwise. The paper details situations in algebraic geometry and sketches only the other examples.