Frobenius powers
Frobenius powers
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弗罗贝尼乌斯幂
DOI:
10.1007/s00209-019-02442-2
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发表时间:
2020
影响因子:
0.8
通讯作者:
Witt, Emily E.
中科院分区:
文献类型:
--
作者:
Hernández, Daniel J.;Teixeira, Pedro;Witt, Emily E.
This article extends the notion of aFrobenius powerof an ideal in prime characteristic to allow arbitrary nonnegative real exponents. These generalized Frobenius powers are closely related to test ideals in prime characteristic, and multiplier ideals over fields of characteristic zero. For instance, like these well-known families of ideals, Frobenius powers also give rise to jumping exponents that we callcritical Frobenius exponents. In fact, the Frobenius powers of a principal ideal coincide with its test ideals, but Frobenius powers appear to be a more refined measure of singularities than test ideals in general. Herein, we develop the theory of Frobenius powers in regular domains, and apply it to study singularities, especially those of generic hypersurfaces. These applications illustrate one way in which multiplier ideals behave more like Frobenius powers than like test ideals.
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DOI:
10.2140/jsag.2019.9.89
发表时间:
2019
期刊:
Journal of Software for Algebra and Geometry
影响因子:
--
作者:
F. Boix, Alberto;Hernández, Daniel;Kadyrsizova, Zhibek;Katzman, Mordechai;Malec, Sara;Robinson, Marcus;Schwede, Karl;Smolkin, Daniel;Teixeira, Pedro;Witt, Emily
通讯作者:
Witt, Emily
DOI:
10.4310/mrl.2012.v19.n2.a11
发表时间:
2011
期刊:
arXiv: Commutative Algebra
影响因子:
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作者:
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通讯作者:
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影响因子:
1.3
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影响因子:
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作者:
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