Adjoining roots in homotopy theory

Abstract

We use a "twisted group algebra" method to constructively adjoin formal radicals $\sqrt[n]{\alpha }$, for $\alpha$ a unit in a commutative ring spectrum or an invertible object in a symmetric monoidal $\infty$-category. We show that this construction is classified by maps from Eilenberg-Mac Lane objects to the unit spectrum, the Picard spectrum, and the Brauer spectrum.

21 pages. Comments welcome

References in corpus (2)

• Higher Topos Theory
• Units of ring spectra and Thom spectra

Cited by in corpus (1)

• Strict units of commutative ring spectra