Analytic Properties of an Orthogonal Fourier-Jacobi Dirichlet Series

This paper establishes the meromorphic continuation and, in the specific case of the E8E_8 lattice, a precise functional equation for a Dirichlet series involving Fourier-Jacobi coefficients of cusp forms on orthogonal groups of signature (2,n+2)(2,n+2) by utilizing an integral representation derived from Klingen-type orthogonal Eisenstein series and their connections to Epstein and Siegel Eisenstein series.

Rafail PsyroukisWed, 11 Ma🔢 math

Theta Operator Equals Fontaine Operator on Modular Curves

Inspired by Pan's work, this paper provides a new proof that an overconvergent modular eigenform of weight $1+kwithanirreducibleGaloisrepresentationisclassicalifandonlyifitsrepresentationisdeRhamat with an irreducible Galois representation is classical if and only if its representation is de Rham at p$, achieved by demonstrating that the theta operator coincides with the Fontaine operator.

Yuanyang JiangWed, 11 Ma🔢 math

The unstable complex in Bruhat-Tits buildings for arithmetic groups over function fields

This paper establishes that for a principal congruence subgroup ΓGLr(K)\Gamma \subset GL_r(K) over a function field KK, the Γ\Gamma-unstable region of the Bruhat-Tits building for GLr(K)GL_r(K_\infty) is homotopy equivalent to the spherical Tits building for GLr(K)GL_r(K), extending Grayson's generalization of Serre's earlier result for GL2GL_2.

Gebhard Böckle, Sriram Chinthalagiri VenkataWed, 11 Ma🔢 math

The Flint Hills Series, Mixed Tate Motives, and a Criterion for the Irrationality Measure of π\pi

This paper establishes that the convergence of the Flint Hills series is equivalent to the irrationality measure of π\pi being at most $5/2,andconditionallyonthisbound,identifiestheseriesasaperiodofaMixedTateMotiveyieldingaconjecturalclosedforminvolving, and conditionally on this bound, identifies the series as a period of a Mixed Tate Motive yielding a conjectural closed form involving \zeta(3)and and L(3, \chi_{-3})$.

Carlos Lopez ZapataWed, 11 Ma🔢 math