The values of the Dedekind-Rademacher cocycle at real multiplication points

H Darmon, A Pozzi, J Vonk - arXiv preprint arXiv:2103.02490, 2021 - ems.press
The values of the Dedekind–Rademacher cocycle at certain real quadratic arguments are
shown to be global p-units in the narrow Hilbert class field of the associated real quadratic …

Rigid meromorphic cocycles for orthogonal groups

H Darmon, L Gehrmann, M Lipnowski - arXiv preprint arXiv:2308.14433, 2023 - arxiv.org
Rigid meromorphic cocycles are defined in the setting of orthogonal groups of arbitrary real
signature and constructed in some instances via a $ p $-adic analogue of Borcherds' …

Diagonal restrictions of p-adic Eisenstein families

H Darmon, A Pozzi, J Vonk - Mathematische Annalen, 2021 - Springer
We compute the diagonal restriction of the first derivative with respect to the weight of ap-
adic family of Hilbert modular Eisenstein series attached to a general (odd) character of the …

Parabolic eigenvarieties via overconvergent cohomology

D Barrera Salazar, C Williams - Mathematische Zeitschrift, 2021 - Springer
Let GG be a connected reductive group over QQ such that G= G/Q _p G= G/Q p is quasi-split,
and let Q ⊂ GQ⊂ G be a parabolic subgroup. We introduce parahoric overconvergent …

Elliptic units for complex cubic fields

N Bergeron, P Charollois, LE Garcia - arXiv preprint arXiv:2311.04110, 2023 - arxiv.org
We propose a conjecture extending the classical construction of elliptic units to complex
cubic number fields $ K $. The conjecture concerns special values of the elliptic gamma …

Modular invariants for real quadratic fields and Kloosterman sums

N Andersen, WD Duke - Algebra & Number Theory, 2020 - msp.org
We investigate the asymptotic distribution of integrals of the j-function that are associated to
ideal classes in a real quadratic field. To estimate the error term in our asymptotic formula …

Windings of prime geodesics

C Burrin, F von Essen - arXiv preprint arXiv:2209.06233, 2022 - arxiv.org
The winding of a closed oriented geodesic around the cusp of the modular orbifold is
computed by the Rademacher symbol, a classical function from the theory of modular forms …

Computing intersections of closed geodesics on the modular curve

J Rickards - Journal of Number Theory, 2021 - Elsevier
In a recent work of Duke, Imamoḡlu, and Tóth, the linking number of certain links on the
space SL (2, Z)\SL (2, R) is investigated. This linking number has an alternative …

A quaternionic construction of p-adic singular moduli

X Guitart, M Masdeu, X Xarles - Research in the Mathematical Sciences, 2021 - Springer
Rigid meromorphic cocycles were introduced by Darmon and Vonk as a conjectural p-adic
extension of the theory of singular moduli to real quadratic base fields. They are certain …

Arithmetic intersections of modular geodesics

H Darmon, J Vonk - Journal of Number Theory, 2022 - Elsevier
The arithmetic, p-arithmetic, and incoherent intersections between pairs of closed geodesics
on a modular or Shimura curve are defined, and some of their expected algebraicity and …