English

Two Cycle Class Maps on Torsion Cycles

Algebraic Geometry 2024-01-23 v1

Abstract

We compare two cycle class maps on torsion cycles and show that they agree up to a minus sign. The first one goes back to Bloch (1979), with recent generalizations to non-closed fields. The second is the \'etale motivic cycle class map αXi ⁣:CHi(X)ZHL2i(X,Z(i))\alpha^{i}_{X}\colon \text{CH}^{i}(X)_{\mathbb{Z}_{\ell}}\to H^{2i}_{L}(X,\mathbb{Z}_{\ell}(i)) restricted to torsion cycles.

Cite

@article{arxiv.2401.11014,
  title  = {Two Cycle Class Maps on Torsion Cycles},
  author = {Theodosis Alexandrou},
  journal= {arXiv preprint arXiv:2401.11014},
  year   = {2024}
}

Comments

17 pages

R2 v1 2026-06-28T14:22:07.939Z