English

Motivic spectra and universality of $K$-theory

Algebraic Geometry 2025-04-18 v3 Algebraic Topology K-Theory and Homology

Abstract

We develop a theory of motivic spectra in a broad generality; in particular A1\mathbb{A}^1-homotopy invariance is not assumed. As an application, we prove that KK-theory of schemes is a universal Zariski sheaf of spectra which is equipped with an action of the Picard stack and satisfies projective bundle formula.

Keywords

Cite

@article{arxiv.2204.03434,
  title  = {Motivic spectra and universality of $K$-theory},
  author = {Toni Annala and Ryomei Iwasa},
  journal= {arXiv preprint arXiv:2204.03434},
  year   = {2025}
}

Comments

v3: 47 pages, small corrections and edits, the numbering has not been changed from v2