K-theoretic balancing conditions and the Grothendieck group of a toric variety
K-theoretic balancing conditions and the Grothendieck group of a toric variety
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K 理论平衡条件和复曲面簇的 Grothendieck 群
DOI:
10.1016/j.jalgebra.2022.07.038
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发表时间:
2022
影响因子:
0.9
通讯作者:
Shah, Aniket
中科院分区:
文献类型:
--
作者:
Shah, Aniket
We introduce a ring of Z-valued functions on a complete fan Δ called Grothendieck weights to describe the ordinary operational K-theory of the associated toric variety X. These functions satisfy a K-theoretic analogue of the balancing condition for Minkowski weights, which is induced by a presentation of the Grothendieck group of X. We explicitly give a combinatorial presentation in low dimensions, and relate Grothendieck weights to other fan-based invariants such as piecewise exponential functions and Minkowski weights. As an application, we give an example of a projective toric surface X such that the forgetful map K T∘(X)→ K∘(X) is not surjective.
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DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
R. Morelli
通讯作者:
R. Morelli
影响因子:
0.9
作者:
N. Berline;M. Vergne
通讯作者:
M. Vergne
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Jos'e Luis Gonz'alez;K. Karu
通讯作者:
K. Karu
DOI:
10.1090/memo/0243
发表时间:
1981
期刊:
arXiv: Geometric Topology
影响因子:
--
作者:
W. Fulton;R. Macpherson
通讯作者:
R. Macpherson
影响因子:
1.3
作者:
Eric Katz;S. Payne
通讯作者:
S. Payne