Periods in equivariant and motivic contexts
Abstract
We define the period as a multiplicative characteristic of stably symmetric monoidal ∞-categories, develop its basic properties, and study many examples, with a focus on `ordinary' equivariant and motivic homotopy theory. We apply the findings to isotropic points in motivic tt-geometry. (Includes an appendix by Ivo Dell'Ambrogio on generalized comparison maps in tt-geometry.)
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