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We characterize partial data uniqueness for the inverse fractional conductivity problem with $H^{s,n/s}$ regularity assumptions in all dimensions. This extends the earlier results for $H^{2s,\frac{n}{2s}}\cap H^s$ conductivities by Covi and…

Analysis of PDEs · Mathematics 2024-09-10 Jesse Railo , Philipp Zimmermann

Viazovska's solution of the sphere packing problem in eight dimensions is based on a remarkable construction of certain special functions using modular forms. Great mathematics has consequences far beyond the problems that originally…

Metric Geometry · Mathematics 2024-07-23 Henry Cohn

A pair $(\Gamma,\Lambda)$, where $\Gamma\subset\mathbb{R}^2$ is a locally rectifiable curve and $\Lambda\subset\mathbb{R}^2$ is a {\em Heisenberg uniqueness pair} if an absolutely continuous (with respect to arc length) finite…

Dynamical Systems · Mathematics 2020-07-14 Haakan Hedenmalm , Alfonso Montes-Rodriguez

We prove, under certain conditions on $(\alpha,\beta)$, that each Schwartz function $f$ such that $f(\pm n^{\alpha}) = \hat{f}(\pm n^{\beta}) = 0, \forall n \ge 0$ must vanish identically, complementing a series of recent results involving…

Classical Analysis and ODEs · Mathematics 2019-10-11 João P. G. Ramos , Mateus Sousa

Previous work by Rubinstein and Gao computed the n-level densities for families of quadratic Dirichlet L-functions for test functions where the sum of the supports of the Fourier transforms is at most 2, and showed agreement with random…

Number Theory · Mathematics 2014-04-03 Jake Levinson , Steven J. Miller

We introduce an approach of Riemann--Roch theorem to the boundedness problem of minimal log discrepancies in fixed dimension. After reducing it to the case of a Gorenstein terminal singularity, firstly we prove that its minimal log…

Algebraic Geometry · Mathematics 2009-03-04 Masayuki Kawakita

We study the Laurent property, the irreducibility and co-primeness of discrete integrable and non-integrable equations. First we study a discrete integrable equation related to the Somos-4 sequence, and also a non-integrable equation as a…

Mathematical Physics · Physics 2014-11-11 Masataka Kanki , Jun Mada , Takafumi Mase , Tetsuji Tokihiro

Let $K$ be a totally real number field of degree $n \geq 2$. The inverse different of $K$ gives rise to a lattice in $\mathbb{R}^n$. We prove that the space of Schwartz Fourier eigenfunctions on $\mathbb{R}^n$ which vanish on the…

Number Theory · Mathematics 2022-06-09 Danylo Radchenko , Martin Stoller

This paper establishes connections between the group-Fourier transform and the geometry of measures in the Heisenberg group. Firstly, it is shown that if the Fourier transform of a compactly supported, finite, Radon measure is square…

Functional Analysis · Mathematics 2020-02-27 Fernando Roman-Garcia

We develop a unified density-based framework for primality, coprimality, and prime pairs, and introduce an intrinsic normalized model for prime gaps constrained by the Prime Number Theorem. Within this setting, a structural tension between…

Number Theory · Mathematics 2026-01-23 Gregorio Vettori

We discuss on Heisenberg uniqueness pairs for the parabola given by discrete sequences along straight lines. Our method consists in linking the problem at hand with recent uniqueness results for the Fourier transform.

Classical Analysis and ODEs · Mathematics 2022-10-12 Felipe Gonçalves , João P. G. Ramos

This paper deals with singular/degenerate semilinear critical equations which arise as the Euler-Lagrange equation of Caffarelli-Kohn-Nirenberg inequalities in $\mathbb{R}^d$, with $d\geq 2$. We prove several rigidity results for positive…

Analysis of PDEs · Mathematics 2025-06-19 Giovanni Catino , Dario Daniele Monticelli , Alberto Roncoroni

We obtain new effective results in best approximation theory, specifically moduli of uniqueness and constants of strong unicity, for the problem of best uniform approximation with bounded coefficients, as first considered by Roulier and…

Classical Analysis and ODEs · Mathematics 2021-12-30 Andrei Sipos

Critical points and singularities are encountered in the study of critical phenomena in probability and physics. We present recent results concerning the values of such critical points and the nature of the singularities for two prominent…

Probability · Mathematics 2014-04-11 Geoffrey R. Grimmett

We generalize many recent uniqueness results on the fractional Calder\'on problem to cover the cases of all domains with nonempty exterior. The highlight of our work is the characterization of uniqueness and nonuniqueness of partial data…

Analysis of PDEs · Mathematics 2024-09-10 Jesse Railo , Philipp Zimmermann

This work focuses on two questions raised by H. Hedenmalm and A. Montes-Rodr\'iguez on Heisenberg Uniqueness Pairs for perturbed lattice crosses. The first of them deals with a complete characterization of $\beta>0$ for which, for a fixed…

Classical Analysis and ODEs · Mathematics 2024-10-08 Danylo Radchenko , João P. G. Ramos

The Calder\'on problem is an inverse problem with applications to electrical impedance tomography and geophysical prospection. We prove uniqueness in the Calder\'on problem in spatial dimension $n \geq 3$ for scalar conductivities in the…

Analysis of PDEs · Mathematics 2016-08-30 Clemens Bombach

The Density Conjecture of Katz and Sarnak associates a classical compact group to each reasonable family of $L$-functions. Under the assumption of the Generalized Riemann Hypothesis, Rubinstein computed the $n$-level density of low-lying…

Number Theory · Mathematics 2008-07-01 Peng Gao

In this article, we investigate large prime factors of Fourier coefficients of non-CM normalized cuspidal Hecke eigenforms in short intervals. One of the new ingredients involves deriving an explicit version of Chebotarev density theorem in…

Number Theory · Mathematics 2024-05-09 Sanoli Gun , Sunil Naik

The 1/[-i\omega + D(\omega, q)q^2] diffusion pole in the localized phase transfers to the 1/\omega Berezinskii-Gorkov singularity, which can be analyzed by the instanton method (M V. Sadovskii, 1982; J. L. Cardy, 1978). Straightforward use…

Other Condensed Matter · Physics 2008-02-14 I. M. Suslov