English

Framed motivic $\Gamma$-spaces

Algebraic Geometry 2022-04-22 v3 Algebraic Topology K-Theory and Homology

Abstract

We combine several mini miracles to achieve an elementary understanding of infinite loop spaces and very effective spectra in the algebro-geometric setting of motivic homotopy theory. Our approach combines Γ\Gamma-spaces and framed correspondences into the concept of framed motivic Γ\Gamma-spaces; these are continuous or enriched functors of two variables that take values in motivic spaces and are equipped with a framing. We craft proofs of our main results by imposing further axioms on framed motivic Γ\Gamma-spaces such as a Segal condition for simplicial Nisnevich sheaves, cancellation, A1{\mathbb A}^{1}- and σ\sigma-invariance, Nisnevich excision, Suslin contractibility, and grouplikeness. This adds to the discussion in the literature on coexisting points of view on the A1{\mathbb A}^{1}-homotopy theory of algebraic varieties.

Keywords

Cite

@article{arxiv.1907.00433,
  title  = {Framed motivic $\Gamma$-spaces},
  author = {Grigory Garkusha and Ivan Panin and Paul Arne Østvær},
  journal= {arXiv preprint arXiv:1907.00433},
  year   = {2022}
}

Comments

to appear in Izvestiya Math

R2 v1 2026-06-23T10:07:58.641Z