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We give explicit formulae for the local normal zeta functions of torsion-free, class-2-nilpotent groups, subject to conditions on the associated Pfaffian hypersurface which are generically satisfied by groups with small centre and…

Group Theory · Mathematics 2007-05-23 Christopher Voll

We introduce a new method to compute explicit formulae for various zeta functions associated to groups and rings. The specific form of these formulae enables us to deduce local functional equations. More precisely, we prove local functional…

Group Theory · Mathematics 2008-02-08 Christopher Voll

We compute the representation and class counting zeta functions for a family of torsion-free finitely generated nilpotent groups of nilpotency class $2$. These groups arise from a generalisation of one the families of unipotent groups…

Group Theory · Mathematics 2024-05-02 Michele Zordan

We develop a practical method for computing local zeta functions of groups, algebras, and modules in fortunate cases. Using our method, we obtain a complete classification of generic local representation zeta functions associated with…

Group Theory · Mathematics 2016-02-03 Tobias Rossmann

We describe an effective procedure to compute the local subgroup zeta functions of the free class-$2$-nilpotent groups on $d$ generators, for all $d$. For $d=4$, this yields a new, explicit formula. For $d\in\{4,5\}$, we compute the…

Group Theory · Mathematics 2024-11-05 Viola Siconolfi , Marlies Vantomme , Christopher Voll

In this paper we derive an explicit expression for the normal zeta function of class two nilpotent groups whose associated Pfaffian hypersurface is smooth. In particular, we show how the local zeta function depends on counting mod p…

Group Theory · Mathematics 2008-02-14 Pirita Paajanen

The local normal zeta functions of a finitely generated, torsion-free nilpotent group $G$ of class 2 depend on the geometry of the Pfaffian hypersurface associated to the bilinear form induced by taking commutators in $G$. The smallest…

Group Theory · Mathematics 2016-09-07 Christopher Voll

The subgroup zeta function and the normal zeta function of a finitely generated virtually nilpotent group can be expressed as finite sums of Dirichlet series admitting Euler product factorization. We compute these series except for a finite…

Group Theory · Mathematics 2021-05-04 Diego Sulca

In this paper, we define edge zeta functions for spherical buildings associated with finite general linear groups. We derive elegant formulas for these zeta functions and reveal patterns of eigenvalues of these buildings, by introducing and…

Combinatorics · Mathematics 2025-10-15 Jianhao Shen

Building on our previous work (arXiv:1405.5711), we develop the first practical algorithm for computing topological zeta functions of nilpotent groups, non-associative algebras, and modules. While we previously depended upon non-degeneracy…

Group Theory · Mathematics 2014-09-18 Tobias Rossmann

We give a sufficient criterion for generic local functional equations for submodule zeta functions associated to nilpotent algebras of endomorphisms defined over number fields. This allows us, in particular, to prove various conjectures on…

Rings and Algebras · Mathematics 2017-07-25 Christopher Voll

We study representation zeta functions of finitely generated, torsion-free nilpotent groups which are rational points of unipotent group schemes over rings of integers of number fields. Using the Kirillov orbit method and p-adic…

Group Theory · Mathematics 2014-02-27 Alexander Stasinski , Christopher Voll

We develop techniques for computing zeta functions associated with nilpotent groups, not necessarily associative algebras, and modules, as well as Igusa-type zeta functions. At the heart of our method lies an explicit convex-geometric…

Group Theory · Mathematics 2014-05-23 Tobias Rossmann

In this paper we compute the subgroup zeta functions of nilpotent semi-direct products of groups of the form $$G_n=<x_1,...,x_n,y_1,...,y_{n-1}|[x_i,x_n]=y_i, 1\leq i\leq n-1, \text{all other $[,]$ trivial}>$$ and deduce local functional…

Group Theory · Mathematics 2016-09-07 Christopher Voll

Let $F_{2,d}$ denote the free class-2-nilpotent group on $d$ generators. We compute the normal zeta functions $\zeta^\triangleleft_{F_{2,d}}(s)$, prove that they satisfy local functional equations and determine their abscissae of…

Group Theory · Mathematics 2007-05-23 Christopher Voll

The higher rank Lefschetz formula for p-adic groups is used to prove rationality of a several-variable zeta function attached to the action of a p-adic group on its Bruhat-Tits building. By specializing to certain lines one gets…

Number Theory · Mathematics 2017-09-04 Anton Deitmar , Ming-Hsuan Kang

We study the local zeta functions of an algebraic group $\mathcal{G}$ defined over $\mathfrak{K}$ together with a faithful $\mathfrak{K}$-rational representation $\rho$ for a finite extension $\mathfrak{K}$ of $\mathbb{Q}$. These are given…

Group Theory · Mathematics 2015-03-13 Mark Berman

We calculate zeta and normal zeta functions of space groups with the point group isomorphic to the cyclic group of order 2. The obtained results are applied to determine the number of subgroups, resp. normal subgroups, of a given index for…

Group Theory · Mathematics 2015-02-12 Hermina Alajbegović , Muharem Avdispahić

We calculate explicitly the normal zeta function of the free class two nilpotent group on four generators. This has Hirsch length ten.

Group Theory · Mathematics 2007-05-23 Pirita Maria Paajanen

We introduce a new class of combinatorially defined rational functions and apply them to deduce explicit formulae for local ideal zeta functions associated to the members of a large class of nilpotent Lie rings which contains the free…

Rings and Algebras · Mathematics 2023-04-19 Angela Carnevale , Michael M. Schein , Christopher Voll
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