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constructible topology : ウィキペディア英語版 | constructible topology In commutative algebra, the constructible topology on the spectrum of a commutative ring is a topology where each closed set is the image of in for some algebra ''B'' over ''A''. An important feature of this construction is that the map is a closed map with respect to the constructible topology. With respect to this topology, is a compact,〔Some authors prefer the term ''quasicompact'' here.〕 Hausdorff, and totally disconnected topological space. In general the constructible topology is a finer topology than the Zariski topology, but the two topologies will coincide if and only if is a von Neumann regular ring, where is the nilradical of ''A''. ==See also==
*Constructible set (topology)
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「constructible topology」の詳細全文を読む
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