Cohomological Invariants in Positive Characteristic
Cohomological Invariants in Positive Characteristic
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正特征中的上同调不变量
DOI:
10.1093/imrn/rnaa321
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发表时间:
2021
影响因子:
1
通讯作者:
Totaro, Burt
中科院分区:
文献类型:
--
作者:
Totaro, Burt
We determine the modcohomological invariants for several affine group schemesin characteristic. These are invariants of-torsors with values in étale motivic cohomology, or equivalently in Kato’s version of Galois cohomology based on differential forms. In particular, we find the mod 2 cohomological invariants for the symmetric groups and the orthogonal groups in characteristic 2, which Serre computed in characteristic not 2. We also determine all operations on the modétale motivic cohomology of fields, extending Vial’s computation of the operations on the modMilnor K-theory of fields.
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DOI:
10.1016/j.jpaa.2008.12.001
发表时间:
2008
期刊:
arXiv: K-Theory and Homology
影响因子:
--
作者:
Charles Vial
通讯作者:
Charles Vial
DOI:
10.1090/pspum/094/06
发表时间:
2017
期刊:
arXiv: K-Theory and Homology
影响因子:
--
作者:
A. Merkurjev
通讯作者:
A. Merkurjev
DOI:
10.1017/cbo9781139059480
发表时间:
2014
期刊:
arXiv: K-Theory and Homology
影响因子:
--
作者:
B. Totaro
通讯作者:
B. Totaro
影响因子:
2.6
作者:
A. Merkurjev
通讯作者:
A. Merkurjev
影响因子:
0.9
作者:
Alexander J. Wertheim
通讯作者:
Alexander J. Wertheim