Bivariant and extended Sylvester rank functions
Bivariant and extended Sylvester rank functions
复制标题
双变量和扩展西尔维斯特秩函数
DOI:
10.1112/jlms.12372
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Li, Hanfeng
中科院分区:
文献类型:
--
作者:
Li, Hanfeng
For a unital ring, a Sylvester rank function is a numerical invariant which can be described in three equivalent ways: on finitely presented left‐modules, or on rectangular matrices over, or on maps between finitely generated projective left‐modules. We extend each Sylvester rank function to all pairs of left‐modules, and to all maps between left‐modules satisfying suitable properties including continuity and additivity.As an application, we show that for any epimorphismof unital rings, the pull‐back map from the set of Sylvester rank functions ofto that ofis injective. We also give a new proof of Schofield's result describing the image of this map whenis the universal localization ofinverting a set of maps between finitely generated projective left‐modules.
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影响因子:
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作者:
Simone Virili
通讯作者:
Simone Virili
影响因子:
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作者:
T. Giordano;David Kerr;N. Phillips;Andrew S. Toms
通讯作者:
Andrew S. Toms
DOI:
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发表时间:
1982
期刊:
影响因子:
--
作者:
P. Malcolmson
通讯作者:
P. Malcolmson
DOI:
--
发表时间:
2019
期刊:
Groups St Andrews 2017 in Birmingham
影响因子:
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作者:
A. Jaikin‐Zapirain
通讯作者:
A. Jaikin‐Zapirain
DOI:
10.1142/9789813272880_0118
发表时间:
2017
期刊:
Proceedings of the International Congress of Mathematicians (ICM 2018)
影响因子:
--
作者:
W. Winter
通讯作者:
W. Winter