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Related papers: Counting Automorphic Forms on Norm One Tori

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This is a note constructing a certain weight 4 automorphic form on the moduli space of cubic surfaces, posted here because it is referred to in math.AG/0002066

Algebraic Geometry · Mathematics 2007-05-23 R. E. Borcherds

The Lie algebra version of the Krull-Schmidt Theorem is formulated and proved. This leads to a method for constructing the automorphisms of a direct sum of Lie algebras from the automorphisms of its indecomposable components. For…

Rings and Algebras · Mathematics 2015-06-15 David J Fisher , Robert J Gray , Peter E Hydon

We characterize the fixed sets of automorphisms of an arbitrary countable, arithmetically saturated structure.

Logic · Mathematics 2026-05-21 James Schmerl

We give asymptotic expressions for the number of commuting matrices over finite fields. For this, we use product expansions for the corresponding generating functions.

Number Theory · Mathematics 2026-02-20 Kathrin Bringmann , Shane Chern , Johann Franke , Bernhard Heim

We describe a contact analog of the symplectic cut construction. As an application we show that the group of contactomorphisms for a particular overtwisted contact structure on the three sphere contains countably many nonconjugate two tori.

Symplectic Geometry · Mathematics 2007-05-23 Eugene Lerman

We study the nodal set of Laplace eigenfunctions on the flat $2d$ torus $\mathbb{T}^2$. We prove an asymptotic law for the nodal length of such eigenfunctions, under some growth assumptions on their Fourier coefficients. Moreover, we show…

Spectral Theory · Mathematics 2022-04-12 Andrea Sartori

We utilize the structure of quasiautomorphic forms over an arbitrary Hecke triangle group to define a new vector analogue of an automorphic form. We supply a proof of the functional equations that hold for these functions modulo the group…

Number Theory · Mathematics 2026-01-01 Michael Andrew Henry

We compute Cayley graphs and automorphism groups for all finite $n$-quandles of two-bridge and torus knots and links, as well as torus links with an axis.

Geometric Topology · Mathematics 2020-01-06 Alissa S. Crans , Jim Hoste , Blake Mellor , Patrick D. Shanahan

I give an algorithm for computing the full space of automorphic forms for definite unitary groups over Q, and apply this to calculate the automorphic forms of level $G(Z-hat)$ and various small weights for an example of a rank 3 unitary…

Number Theory · Mathematics 2011-04-19 David Loeffler

Let G be a special orthogonal group or an inner form of a symplectic group over a number field F such that there exists a non-empty set S of real places of F at which G has discrete series and outside of which G is quasi-split. We prove…

Number Theory · Mathematics 2015-10-29 Olivier Taïbi

We classify two-dimensional complex tori admitting automorphisms with positive entropy in terms of the entropies they exhibit. For each possible positive value of entropy, we describe the set of two-dimensional complex tori admitting…

Dynamical Systems · Mathematics 2014-06-30 Paul Reschke

A one parameter set of noncommutative complex algebras is given. These may be considered deformation quantisation algebras. The commutative limit of these algebras correspond to the algebra of polynomial functions over a manifold or…

Quantum Algebra · Mathematics 2009-11-10 Jonathan Gratus

Let $E$ be an elliptic curve defined over $\mathbb{Q}$, and let $K$ be a number field of degree four that is Galois over $\mathbb{Q}$. The goal of this article is to classify the different isomorphism types of $E(K)_{\text{tors}}$.

Number Theory · Mathematics 2015-11-05 Michael Chou

We classify the automorphic Lie algebras of equivariant maps from a complex torus to $\mathfrak{sl}_2(\mathbb{C})$. For each case we compute a basis in a normal form. The automorphic Lie algebras correspond precisely to two disjoint…

Rings and Algebras · Mathematics 2024-11-20 Vincent Knibbeler , Sara Lombardo , Casper Oelen

In this paper we prove criteria for a nonnormal toric variety to be flexible, to be rigid and to be almost rigid. For rigid and almost rigid toric varieties we describe the automorphism group explicitly.

Algebraic Geometry · Mathematics 2020-12-08 Ilya Boldyrev , Sergey Gaifullin

We give a classification of the cuspidal automorphic representations attached to rational elliptic curves with a non-trivial torsion point of odd order. Such elliptic curves are parameterizable, and in this paper, we find the necessary and…

Number Theory · Mathematics 2022-10-18 Alexander J. Barrios , Manami Roy

We construct a projective variety with discrete, non-finitely generated automorphism group. As an application, we show that there exists a complex projective variety with infinitely many non-isomorphic real forms.

Algebraic Geometry · Mathematics 2017-02-08 John Lesieutre

We produce first examples of p-local height three TAF homology theories. The corresponding one-dimensional formal groups arise as split summands of the formal groups of certain abelian three-folds, the Shimura variety of which can be…

Algebraic Topology · Mathematics 2017-05-08 Hanno von Bodecker , Sebastian Thyssen

Let $K$ be a locally compact non-discrete field of characteristic $p>2$ and $Q$ be a non-degenerate isotropic binary quadratic form with coefficients in $K$. We obtain asymptotic estimates for the number of solutions in the two-fold product…

Number Theory · Mathematics 2023-05-26 Manoj Choudhuri , Prashant J. Makadiya

In this article, we establish an asymptotic estimate on the number of cuspidal automorphic representations of ${\rm GL}_4(\mathbb A_{\mathbb Q})$ which contribute to the cuspidal cohomology of ${\rm GL}_4$ and are obtained from symmetric…

Number Theory · Mathematics 2026-04-28 Chandrasheel Bhagwat , Sudipa Mondal