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math.AT2025

Affine étale group schemes over Tambara fields

Noah Wisdom

We classify finite étale extensions and finite affine étale group schemes over the -Tambara functor , for any algebraically closed field a…

math.AT2025

The subgroup stratification of Nakaoka spectra

Noah Wisdom

We construct a stratification on the Nakaoka spectrum of any -Tambara functor indexed by the poset of subgroups of . When is Dedekind, we show that the th stratum of t…

math.AT2025

Clarification and Coinduction of Tambara Functors

Noah Wisdom

Tambara functors are equivariant analogues of rings arising in representation theory and equivariant homotopy theory. We introduce the notion of a clarified Tambara functor and sho…

math.AT2025

On minimal bases in homotopical combinatorics

Katharine Adamyk, Scott Balchin, Miguel Barrero +3

We present a development in the computational suite for the study of operads for a finite group . This progress is achieved using the simple yet powerful observation…

math.AT2025

Algebraically Closed Fields in Equivariant Algebra

Jason Schuchardt, Ben Spitz, Noah Wisdom

Using the Burklund-Schlank-Yuan abstraction of ``algebraically closed" to ``Nullstellensatzian", we show that a -Tambara functor is Nullstellensatzian if and only if it is the c…

math.AT2025

A classification of -Tambara fields

Noah Wisdom

Tambara functors arise in equivariant homotopy theory as the structure adherent to the homotopy groups of a coherently commutative equivariant ring spectrum. We show that if is…