The coanalyticity of the reduced K-theory on modules over free tensor algebras of dualizable t-categories

Abstract

In this paper, we formulate Land-Tamme's $\boxtimes$-construction and $\odot$-construction for continuous exact monads on dualizable stable $\infty$-categories, and establish the behaviour of localizing invariants on pushouts of left modules over continuous exact monads on dualizable stable $\infty$-categories. Combining the Land-Tamme theory of continuous exact monads with the theory of analytic functors in Goodwillie calculus, we show that the reduced K-theory on modules over free tensor algebras of dualizable t-categories is modified 1-coanalytic or modified 2-coanalytic, depending on the coconnectivity of the base algebras. In particular, this answers Efimov's question concerning coanalyticity in the affirmative.