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 …

Families of Bianchi modular symbols: critical base-change p-adic L-functions and p-adic Artin formalism

D Barrera Salazar, C Williams - Selecta Mathematica, 2021 - Springer
Let K be an imaginary quadratic field. In this article, we study the eigenvariety for GL 2/K,
proving an étaleness result for the weight map at non-critical classical points and a …

Big principal series,-invariants

L Gehrmann, G Rosso - Compositio Mathematica, 2022 - cambridge.org
In earlier work, the first named author generalized the construction of Darmon-style-
invariants for representations of definite unitary groups of arbitrary rank. Finally, we study the …

ARITHMETIC OF p‐IRREGULAR MODULAR FORMS: FAMILIES AND p‐ADIC L‐FUNCTIONS

A Betina, C Williams - Mathematika, 2021 - Wiley Online Library
Let fnew be a classical newform of weight≥ 2 and prime to p level. We study the arithmetic
of fnew and its unique p‐stabilisation f when fnew is p‐irregular, that is, when its Hecke …

Automorphic ℒ‐invariants for reductive groups

L Gehrmann - Journal für die reine und angewandte Mathematik …, 2021 - degruyter.com
Let G be a reductive group over a number field F, which is split at a finite place 𝔭 of F, and let
π be a cuspidal automorphic representation of G, which is cohomological with respect to the …

p-adic Asai L-functions of Bianchi modular forms

D Loeffler, C Williams - Algebra & Number Theory, 2020 - msp.org
The Asai (or twisted tensor) L-function of a Bianchi modular form Ψ is the L-function attached
to the tensor induction to ℚ of its associated Galois representation. When Ψ is ordinary at p …

The rationality of Stark-Heegner cycles attached to Bianchi modular forms--The base-change scenario

G Venkat - arXiv preprint arXiv:2112.07402, 2021 - arxiv.org
We study Stark-Heegner cycles attached to Bianchi modular forms, that is automorphic forms
for GL (2) over an imaginary quadratic field F. The Stark-Heegner cycles are local …

Stark–Heegner cycles attached to Bianchi modular forms

G Venkat, C Williams - Journal of the London Mathematical …, 2021 - Wiley Online Library
Let f be a Bianchi modular form, that is, an automorphic form for GL (2) over an imaginary
quadratic field F, and let p be a prime of F at which f is new. Let K be a quadratic extension of …

An introduction to -adic -functions

JR Jacinto, C Williams - arXiv preprint arXiv:2309.15692, 2023 - arxiv.org
In these expository notes, we give an introduction to $ p $-adic $ L $-functions and the
foundations of Iwasawa theory. Firstly, we give an (analytic) measure-theoretic construction …

Derived Hecke algebra and automorphic ℒ-invariants

L Gehrmann - Transactions of the American Mathematical Society, 2019 - ams.org
Let $\pi $ be a cohomological cuspidal automorphic representation of PGL $ _2 $ over a
number field of arbitrary signature. Under the assumption that the local component of $\pi …