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We construct a faithful and conservative functor from prisms to $C_{p^\infty}$-Tambara functors; in appropriate situations, this gives an algebraic description of $\underline\pi_0{\mathrm{TC}^-}$. We also present two integral variants using…

Number Theory · Mathematics 2023-09-12 Yuri J. F. Sulyma

We lift to equivariant algebra three closely related classical algebraic concepts: abelian group objects in augmented commutative algebras, derivations, and K\"ahler differentials. We define Mackey functor objects in the category of Tambara…

Algebraic Topology · Mathematics 2017-01-24 Michael A. Hill

For an equivariant commutative ring spectrum $R$, $\pi_0 R$ has algebraic structure reflecting the presence of both additive transfers and multiplicative norms. The additive structure gives rise to a Mackey functor and the multiplicative…

Algebraic Topology · Mathematics 2021-04-22 Andrew J. Blumberg , Michael A. Hill

In this work we define a primary spectrum of a commutative ring R with its Zariski topology $\mathfrak{T}$. We introduce several properties and examine some topological features of this concept. We also investigate differences between the…

Commutative Algebra · Mathematics 2017-05-23 Neslihan Ayşen Özkirişci , Zeliha Kılıç , Suat Koç

For all subgroups $H$ of a cyclic $p$-group $G$ we define norm functors that build a $G$-Mackey functor from an $H$-Mackey functor. We give an explicit construction of these functors in terms of generators and relations based solely on the…

Algebraic Topology · Mathematics 2019-08-02 Michael A. Hill , Kristen Mazur

We construct new families of positive energy representations of affine vertex algebras together with their free field realizations by using localization technique. We introduce the twisting functor T_\alpha on the category of modules over…

Representation Theory · Mathematics 2020-10-28 Vyacheslav Futorny , Libor Křižka

The theory of ternary $\Gamma$-semirings extends classical ring and semiring frameworks by introducing a ternary product controlled by a parameter set $\Gamma$. Building on the foundational axioms recently established by Rao, Rani, and…

Rings and Algebras · Mathematics 2026-02-02 Chandrasekhar Gokavarapu , Dr D Madhusudhana Rao

Recent progress of quantum simulators provides insight into the fundamental problems of strongly correlated systems. To adequately assess the accuracy of these simulators, the precise modeling of the many-body physics, with accurate model…

Strongly Correlated Electrons · Physics 2019-10-23 Yao Wang , Juan Pablo Dehollain , Fang Liu , Uditendu Mukhopadhyay , Mark S. Rudner , Lieven M. K. Vandersypen , Eugene Demler

Let $G$ be a finite group, and $k$ an integer. In this note, we show that for any $G$-Tambara functor $T$ and any subgroups $H_1, H_2 \leq G$, $k$ is a unit in $T(G/H_1)$ if and only if $k$ is a unit in $T(G/H_2)$. In other words, one may…

Group Theory · Mathematics 2026-01-27 Ben Spitz

The first word in the title is intended in a sense suggested by Lawvere and Schanuel whereby finite sets are objective natural numbers. At the objective level, the axioms defining abstract Mackey and Tambara functors are categorically…

Category Theory · Mathematics 2025-04-22 Ross Street

Let $F$ be a totally real field and $K$ a finite abelian CM extension of $F$. Using class field theory, we show that our previous result giving a strong form of the Brumer-Stark conjecture implies the minus part of the equivariant Tamagawa…

Number Theory · Mathematics 2023-12-18 Samit Dasgupta , Mahesh Kakde , Jesse Silliman

In equivariant algebra, Mackey functors replace abelian groups and incomplete Tambara functors replace commutative rings. In this context, we prove that equivariant Hochschild homology can sometimes be computed using Mackey functor-valued…

Algebraic Topology · Mathematics 2024-07-29 David Mehrle , J. D. Quigley , Michael Stahlhauer

We organize the modified trace theory with the use of the Nakayama functor of finite abelian categories. For a linear right exact functor $\Sigma$ on a finite abelian category $\mathcal{M}$, we introduce the notion of a $\Sigma$-twisted…

Quantum Algebra · Mathematics 2021-10-26 Taiki Shibata , Kenichi Shimizu

We define the notion of an $\mathcal{RO}(G)$-graded Tambara functor and prove that any $G$-spectrum with norm multiplication gives rise to such an $\mathcal{RO}(G)$-graded Tambara functor.

Algebraic Topology · Mathematics 2023-03-14 Vigleik Angeltveit , Anna Marie Bohmann

This paper develops the algebraic foundation required to build a Zariski-type geometry for \emph{commutative ternary $\Gamma$-semirings}, where multiplication is an inherently triadic, multi-parametric interaction…

Rings and Algebras · Mathematics 2025-12-25 Chandrasekhar Gokavarapu , D. Madhusudhana Rao

Let $k$ be a field of characteristic zero and $B$ a commutative integral domain that is also a finitely generated $k$-algebra. It is well known that if $k$ is algebraically closed and the "Field Makar-Limanov" invariant FML$(B)$ is equal to…

Algebraic Geometry · Mathematics 2018-06-29 Daniel Daigle

Building on work of Hill, Hoyer and Mazur we propose an equivariant version of a Loday construction for $G$-Tambara functors where $G$ is an arbitrary finite group. For any finite simplicial $G$-set and any $G$-Tambara functor, our Loday…

Algebraic Topology · Mathematics 2025-07-08 Ayelet Lindenstrauss , Birgit Richter , Foling Zou

We classify finite \'{e}tale extensions and finite affine \'{e}tale group schemes over the $G$-Tambara functor $\underline{\mathbb{F}}$, for $\mathbb{F}$ any algebraically closed field and $G$ any finite group. This establishes $G$-Galois…

Algebraic Topology · Mathematics 2025-10-28 Noah Wisdom

We define an affine Jacquet functor and use it to describe the structure of induced affine Harish-Chandra modules at noncritical levels, extending the theorem of Kac and Kazhdan [KK] on the structure of Verma modules in the…

Representation Theory · Mathematics 2007-05-23 Milen Yakimov

We give, for every finite group G, a combinatorial description of the ring of G-Witt vectors on a polynomial algebra over the integers. Using this description we show that the functor, which takes a ring with trivial action of G to its ring…

Commutative Algebra · Mathematics 2007-05-23 Morten Brun