Restricted set addition in finite abelian groups

This paper establishes that for any integer h4h \geq 4 and any α\alpha greater than the unique positive root αh\alpha_h of a specific polynomial, the restricted hh-fold sumset of a subset AA in a finite abelian group of sufficiently large odd order equals the entire group whenever Aαn|A| \geq \alpha n, thereby generalizing previous results on cyclic groups and identifying 13\frac{1}{3} as the optimal asymptotic density threshold.

Vivekanand Goswami, Raj Kumar Mistri2026-03-06🔢 math

Topological, metric and fractal properties of the set of real numbers with a given asymptotic mean of digits in their $4$-adic representation in the case when the digit frequencies exist

This paper investigates the topological, metric, and fractal properties of the set of real numbers whose 4-adic digits possess existing frequencies and a specific asymptotic mean, providing an algorithm for constructing such points and establishing conditions for their Lebesgue measure and Hausdorff dimension.

M. V. Pratsiovytyi, S. O. Klymchuk2026-03-06🔢 math

Asymptotic mean of digits of the QsQ_s-representation of the fractional part of a real number and related problems of fractal geometry and fractal analysis

This paper introduces the concept of the asymptotic mean of digits in the generalized QsQ_s-representation of real numbers and investigates the topological, metric, and fractal properties of sets defined by the existence or specific values of these means, while also exploring their connections to digit frequencies and fractal geometry.

M. V. Pratsiovytyi, S. O. Klymchuk2026-03-06🔢 math

Additive Rigidity for xx-Coordinates of Rational Points on Elliptic Curves

This paper establishes that the number of rational points on an elliptic curve whose xx-coordinates lie in a dd-dimensional generalized arithmetic progression is bounded by a constant raised to the power of the curve's Mordell-Weil rank, a result derived by combining gap principles for large canonical heights with spherical code bounds and which implies restrictions on sets of points with small sumsets.

Seokhyun Choi2026-03-06🔢 math

The Second Moment of Sums of Hecke Eigenvalues II

This paper computes the first and second moments of sums of normalised Hecke eigenvalues over holomorphic cusp forms of large weight, demonstrating that in the range k2/(8π2)xk12/5ϵk^2/(8\pi^2)\leq x\leq k^{12/5-\epsilon}, the second moment scales between x1/2o(1)x^{1/2-o(1)} and x1/2x^{1/2}, a sharp contrast to the linear growth observed in the lower range xk2o(1)x\leq k^{2-o(1)}.

Ned Carmichael2026-03-06🔢 math

Gersten-type conjecture for henselian local rings of normal crossing varieties

This paper proves a Gersten-type conjecture for étale sheaves, including étale logarithmic Hodge-Witt sheaves and ll-adic Tate twists, over henselian local rings of normal crossing varieties in positive characteristic, and applies this result to establish a relative version of the conjecture for pp-adic étale Tate twists over semistable families in mixed characteristic as well as a generalization of Artin's theorem on Brauer groups.

Makoto Sakagaito2026-03-06🔢 math