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We report a simple rigidity theorem for certain Euler products.

Number Theory · Mathematics 2021-07-13 Shin-ya Koyama , Nobushige Kurokawa

We discuss conditions for complete intersections in a toric variety which allow to compute Hodge numbers if the complete intersection is a quasi-smooth complete variety. A preliminary step is the computation of the Euler characteristic of…

Algebraic Geometry · Mathematics 2011-06-10 Helmut A. Hamm

H.L.Montgomery proved a relation for error terms in asymptotic formulas for the Euler totient function. J.Kaczorowski defined the associated Euler totient function which generalizes and obtained an asymptotic formula for it. In this paper,…

Number Theory · Mathematics 2026-02-16 Hideto Iwata

We lift the Euler characteristic of a nearly perfect complex to a relative algebraic K-group by passing to its l-adic Euler characteristics.

K-Theory and Homology · Mathematics 2007-05-23 David Burns , Bernhard Köck , Victor Snaith

We derive an efficient algorithm to find solutions to Euler's concordant form problem and rational points on elliptic curves associated with this problem.

Algebraic Geometry · Mathematics 2019-07-05 Hagen Knaf , Erich Selder , Karlheinz Spindler

In this paper we prove the Bohr Theorem for slice regular functions. Following the historical path that led to the proof of the classical Bohr Theorem, we also extend the Borel-Carath\'eodory Theorem to the new setting.

Complex Variables · Mathematics 2014-04-14 Chiara Della Rocchetta , Graziano Gentili , Giulia Sarfatti

This paper is a corrigendum to the article 'On the ideal theorem for number fields`. The main result of this paper proves to be untrue and is replaced by an estimate of a weighted sum with an improved error term.

Number Theory · Mathematics 2020-06-25 Olivier Bordellès

We use Herbrand's theorem to give a new proof that Euclid's parallel axiom is not derivable from the other axioms of first-order Euclidean geometry. Previous proofs involve constructing models of non-Euclidean geometry. This proof uses a…

Logic · Mathematics 2015-11-10 Michael Beeson , Pierre Boutry , Julien Narboux

Euler proves that the sum of two 4th powers can't be a 4th power and that the difference of two distinct non-zero 4th powers can't be a 4th power and Fermat's theorem that the equation x(x+1)/2=y^4 can only be solved in integers if x=1 and…

History and Overview · Mathematics 2012-02-20 Leonhard Euler , Artur Diener , Alexander Aycock

In this paper, real matrix representations of split quaternions are examined in terms of the casual character of quaternion. Then, we give De-Moivre' s formula for real matrices of timelike and spacelike split quaternions, separately.…

General Mathematics · Mathematics 2015-03-19 Melek Erdogdu , Mustafa Ozdemir

Extending the results of Nardi (2015), this note establishes an existence and uniqueness result for second-order uniformly elliptic PDEs in divergence form with Neumann boundary conditions. A Schauder estimate is also derived.

Analysis of PDEs · Mathematics 2025-07-04 Haruki Kono

In this work, a tensor completion problem is studied, which aims to perfectly recover the tensor from partial observations. The existing theoretical guarantee requires the involved transform to be orthogonal, which hinders its applications.…

Machine Learning · Computer Science 2024-08-16 Li Ge , Lin Chen , Yudong Chen , Xue Jiang

In this work we prove that for a compact odd-dimensional orbifold its Euler characteristic is half of the Euler characteristic of its boundary.

Geometric Topology · Mathematics 2024-09-24 Ramon Gallardo

Translation from the Latin of Euler's "Demonstratio theorematis circa ordinem in summis divisorum observatum" (1760). E244 in the Enestroem index. In his previous paper E243, Euler stated the pentagonal number theorem and assuming it proved…

History and Overview · Mathematics 2009-07-30 Leonhard Euler , Jordan Bell

In this paper, we introduce the polynomial continued fraction, a close relative of the well-known simple continued fraction expansions which are widely used in number theory and in general. While they may not possess all the intriguing…

Dynamical Systems · Mathematics 2023-12-04 Ofir David

An unusual formula for the Euler characteristics of even dimensional triangulated manifolds is deduced from the generalized Dehn-Sommerville equations.

Geometric Topology · Mathematics 2007-05-23 Toshiyuki Akita

We adapt (over $\mathbb{F}_2$) the general notions of multiplicative function, Dirichlet convolution and Inverse. We get some interesting results, namely necessary conditions for an odd binary polynomial to be perfect. Note that we are…

Number Theory · Mathematics 2023-01-16 Luis H. Gallardo , Olivier Rahavandrainy

Euler had considered the problem of finding three integers whose sum, product, and also the sum of the products of the integers, taken two at a time, are all perfect squares. Euler's methods of solving the problem lead to parametric…

Number Theory · Mathematics 2025-05-27 Ajai Choudhry

It is argued that Goedel's incompleteness theorem should be seen as self-evident, rather than unexpected or surprising.

General Mathematics · Mathematics 2007-05-23 Elemer E Rosinger

We prove two results on converse theorems for Hilbert modular forms over totally real fields of degree $r>1$. The first result recovers a Hilbert modular form (of some level) from an $L$-series satisfying functional equations twisted by all…

Number Theory · Mathematics 2025-11-05 Pengcheng Zhang