activity
20142026
most citedLocal Constancy of Intersection Numbers

5 citations · 6 across the 10 of their papers we have counts for

collaborators

13 papers

math.NT2026

Jacquet--Rallis transfer for GL(2)

Andreas Mihatsch, Siddarth Sankaran, Tonghai Yang

We study archimedean smooth transfer for the Jacquet--Rallis relative trace formula comparison, in particular, identities between orbital integrals on GL(n) and its unitary forms.…

math.RT2025

Gaussian test functions and Jacquet-Rallis transfer

Andreas Mihatsch, Siddarth Sankaran, Tonghai Yang

We construct Gaussian test functions for the general linear side of the Jacquet-Rallis relative trace formula comparison. These are functions which are defined in terms of their or…

math.AG2025

Unitary Shimura varieties at ramified primes and arithmetic transfer

Yu Luo, Andreas Mihatsch, Zhiyu Zhang

We consider unitary Shimura varieties at places where the totally real field ramifies over $\mbQ$. Our first result constructs comparison isomorphisms between absolute and relative…

math.NT2023

A linear AFL for quaternion algebras

Nuno Hultberg, Andreas Mihatsch

We prove new fundamental lemma and arithmetic fundamental lemma identities for general linear groups over quaternion division algebras. In particular, we verify the transfer conjet…

math.NT2023

Arithmetic transfer for inner forms of

Qirui Li, Andreas Mihatsch

We formulate Guo--Jacquet type fundamental lemma conjectures and arithmetic transfer conjectures for inner forms of . Our main results confirm these conjectures for divisi…

math.AG2022

On the Linear AFL: The Non-Basic Case

Qirui Li, Andreas Mihatsch

The linear Arithmetic Fundamental Lemma (AFL) conjecture compares intersection numbers on Lubin--Tate deformation spaces with derivatives of orbital integrals. It has been introduc…

math.AG2021

-Forms on Lubin--Tate Space

Andreas Mihatsch

We extend Gubler--Künnemann's theory of -forms from algebraic varieties to good Berkovich spaces. This is based on the observation that skeletons in such spaces satisfy a tropic…

math.AG2021

On Tropical Intersection Theory

Andreas Mihatsch

We develop a tropical intersection formalism of forms and currents that extends classical tropical intersection theory in two ways. First, it allows to work with arbitrary polytope…

math.NT2021★ 1 cited

On the Arithmetic Fundamental Lemma conjecture over a general -adic field

Andreas Mihatsch, Wei Zhang

We prove the arithmetic fundamental lemma conjecture over a general -adic field with odd residue cardinality . Our strategy is similar to the one used by the secon…

math.AG2020★ 5 cited

Local Constancy of Intersection Numbers

Andreas Mihatsch

We prove that, in certain situations, intersection numbers on formal schemes that come in profinite families vary locally constantly in the parameter. To this end, we define the pr…

math.AG2016

Relative unitary RZ-spaces and the Arithmetic Fundamental Lemma

Andreas Mihatsch

We verify new cases of the Arithmetic Fundamental Lemma (AFL) of Wei Zhang. This relies on a recursive algorithm which allows, under certain conditions, to reduce the AFL identity…

math.AG2015

On the Arithmetic Fundamental Lemma through Lie algebras

Andreas Mihatsch

We prove that the Arithmetic Fundamental Lemma conjecture of Wei Zhang is equivalent to a similar conjecture, but for Lie algebras, in the case of non-degenerate intersection. We u…

math.NT2014

An Arithmetic Transfer Identity

Andreas Mihatsch

We prove a variant of the Arithmetic Fundamental Lemma conjecture of Wei Zhang for n=2. More precisely, we consider the deformation lengths of certain quasi-homomorphisms of quasi-…