English

Wilson Spaces, Snaith Constructions, and Elliptic Orientations

Algebraic Topology 2024-02-06 v2

Abstract

We construct a canonical family of even periodic E\mathbb{E}_{\infty}-ring spectra, with exactly one member of the family for every prime pp and chromatic height nn. At height 11 our construction is due to Snaith, who built complex KK-theory from CP\mathbb{CP}^{\infty}. At height 22 we replace CP\mathbb{CP}^{\infty} with a pp-local retract of BU6\mathrm{BU} \langle 6 \rangle, producing a new theory that orients elliptic, but not generic, height 22 Morava EE-theories. In general our construction exhibits a kind of redshift, whereby BPn1\mathrm{BP}\langle n-1 \rangle is used to produce a height nn theory. A familiar sequence of Bocksteins, studied by Tamanoi, Ravenel, Wilson, and Yagita, relates the K(n)K(n)-localization of our height nn ring to work of Peterson and Westerland building EnhSG±E_n^{hS\mathbb{G}^{\pm}} from K(Z,n+1)\mathrm{K}(\mathbb{Z},n+1).

Cite

@article{arxiv.1910.04616,
  title  = {Wilson Spaces, Snaith Constructions, and Elliptic Orientations},
  author = {Hood Chatham and Jeremy Hahn and Allen Yuan},
  journal= {arXiv preprint arXiv:1910.04616},
  year   = {2024}
}

Comments

41 pages, accepted version. Comments welcome!

R2 v1 2026-06-23T11:39:52.770Z