arXiv subjects

Andre Unterberger

Publications and source records attributed to Andre Unterberger.

3 recordsLinked to original sources

arXiv2023

Automorphic line measures in the half-plane and the Grand Riemann Hypothesis

Poincare-type series, such as Selberg's, are known to produce automorphic functions, in the hyperbolic half-plane, the decompositions of which into eigenfunctions (genuine or generalized) of the automorphic Laplacian contain all modular forms of nonholomorphic type. We introduce a one-parameter family of explicit automorphic measures supported by discrete unions of congruent lines with the same property, except for one value of the real parameter, for which they miss exactly the Eisenstein series associated to non-trivial zeros of zeta, and the Hecke eigenforms the $L$-functions associated to which vanish as $\frac{1}{2}$. The Grand Riemann Hypothesis, a special case of which needs being analyzed, is disproved

math.NT↗

arXiv2022

Pseudodifferential arithmetic and a failed attempt on the Riemann hypothesis

A criterion for the validity of the Riemann hypothesis reduced the problem to the search for a certain estimate, for a hermitian form associated by means of the Weyl symbolic calculus of operators to a distribution in the plane of an arithmetic nature. One can reduce the question further to an algebraic question. After completion of the calculation of the hermitian form obtained, this attempt does not seem to lead to a genuinely new method of analysis of the conjecture. A better cooperation between usual analysis and congruence arithmetic may be called for, and some possible hints are given at the end.

math.NT↗

arXiv2020

A unified scheme of approach to the Ramanujan conjecture

The Ramanujan conjecture for modular forms of holomorphic type was proved by Deligne almost half a century ago: the proof, based on his earlier proof of Weil's conjectures, was an achievement of algebraic geometry. We give here a short analytic proof of the Ramanujan-Deligne theorem, and we shall indicate at the end the close analogy of the proof with that of the Ramanujan-Petersson conjecture for Maass forms [8].

math.NT↗