Affine quadrics and the Picard group of the motivic category
Affine quadrics and the Picard group of the motivic category
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仿射二次曲面和动机范畴的皮卡德群
DOI:
10.1112/s0010437x19007401
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发表时间:
2018
影响因子:
1.8
通讯作者:
A. Vishik
中科院分区:
文献类型:
--
作者:
A. Vishik
In this paper we study the subgroup of the Picard group of Voevodsky’s category of geometric motives $\operatorname{DM}_{\text{gm}}(k;\mathbb{Z}/2)$ generated by the reduced motives of affine quadrics. Our main tools here are the functors of Bachmann [On the invertibility of motives of affine quadrics, Doc. Math. 22 (2017), 363–395], but we also provide an alternative method. We show that the group in question can be described in terms of indecomposable direct summands in the motives of projective quadrics over $k$ . In particular, we describe all the relations among the reduced motives of affine quadrics. We also extend the criterion of motivic equivalence of projective quadrics.
DOI:
10.24033/asens.2142
发表时间:
2011
期刊:
Annales scientifiques de l'École normale supérieure
影响因子:
--
作者:
Vishik A
通讯作者:
Vishik A