Locally Complete Intersection Maps and the Proxy Small Property
Locally Complete Intersection Maps and the Proxy Small Property
复制标题
局部完整的交叉路口地图和代理小属性
DOI:
10.1093/imrn/rnab041
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发表时间:
2021
影响因子:
1
通讯作者:
Pollitz, Josh
中科院分区:
文献类型:
--
作者:
Briggs, Benjamin;Iyengar, Srikanth B;Letz, Janina C;Pollitz, Josh
It is proved that a mapof commutative Noetherian rings that is essentially of finite type and flat is locally complete intersection if and only ifis proxy small as a bimodule. This means that the thick subcategory generated byas a module over the enveloping algebracontains a perfect complex supported fully on the diagonal ideal. This is in the spirit of the classical result thatis smooth if and only ifis small as a bimodule; that is to say, it is itself equivalent to a perfect complex. The geometric analogue, dealing with maps between schemes, is also established. Applications include simpler proofs of factorization theorems for locally complete intersection maps.
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DOI:
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发表时间:
1990
期刊:
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DOI:
10.4310/hha.2021.v23.n2.a10
发表时间:
2020
期刊:
Homology, Homotopy and Applications
影响因子:
--
作者:
Janina C. Letz
通讯作者:
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