English

Adelic descent for K-theory

K-Theory and Homology 2021-11-16 v1 Algebraic Geometry

Abstract

We prove an adelic descent result for localizing invariants: for each Noetherian scheme XX of finite Krull dimension and any localizing invariant EE, e.g., algebraic K-theory of Bass-Thomason, there is an equivalence E(X)limE(Ared(X))E(X)\simeq \lim E(A^{\cdot}_{\text{red}}(X)), where Ared(X)A^{\cdot}_{\text{red}}(X) denotes Beilinson's semi-cosimplicial ring of reduced adeles on XX. We deduce the equivalence from a closely related cubical descent result, which we prove by establishing certain exact sequences of perfect module categories over adele rings.

Keywords

Cite

@article{arxiv.2111.07202,
  title  = {Adelic descent for K-theory},
  author = {Hyungseop Kim},
  journal= {arXiv preprint arXiv:2111.07202},
  year   = {2021}
}

Comments

19 pages, comments welcome

R2 v1 2026-06-24T07:37:28.031Z