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We show how, starting from the Tate exact sequence for units of Ritter and Weiss, one can obtain an algebraic proof of Brauer's class number formula, using the formalism of regulator constants.

Number Theory · Mathematics 2025-05-05 Luca Caputo

In this paper we give simple proofs for the bounds (some of them sharp) of the difference of the moduli of the second and the first logarithmic coefficient for the general class of univalent functions and for the class of convex univalent…

Complex Variables · Mathematics 2023-11-28 Milutin Obradovic , Nikola Tuneski

In this paper, we give a bijective proof of the reduced lecture hall partition theorem. It is possible to extend this bijection in lecture hall partition theorem. And refined versions of each theorems are also presented.

Combinatorics · Mathematics 2015-04-17 Masanori Ando

Gap balancing numbers are a certain generalization of balancing and cobalancing numbers that arise from studying the equation ${T(L)+T(B)=T(m)}$ where $T(i)$ is the $i$th triangular number. In this paper, we survey early results, attempt to…

Number Theory · Mathematics 2018-10-19 Jeremiah Bartz , Bruce Dearden , Joel Iiams

We give an elementary, self-contained and quick proof of Belyi's theorem. As a by-product of our proof we obtain an explicit bound for the degree of the defining number field of a Belyi surface.

Algebraic Geometry · Mathematics 2014-04-29 Bernhard Köck

We prove a binomial formula for Macdonald polynomials and consider applications of it.

q-alg · Mathematics 2008-02-03 Andrei Okounkov

The classical quadratic formula and some of its lesser known variants for solving the quadratic equation are reviewed. Then, a new formula for the roots of a quadratic polynomial is presented.

History and Overview · Mathematics 2019-08-06 Norbert Hungerbühler

In this paper, we give a simple counter example to the famous Hodge conjecture.

General Mathematics · Mathematics 2013-01-23 Renyi Ma

Ambiguity is shown in the context of the differential calculus of several variables and with the help of the language of category theory, a way to solve it in its most general form is offered. It is also shown that this new definition is…

Classical Analysis and ODEs · Mathematics 2007-05-23 Andrew E. Chubykalo , Rolando A. Flores , Juan A. Pérez

In this short note a new proof of the monotone con- vergence theorem of Lebesgue integral on \sigma-class is given.

Functional Analysis · Mathematics 2011-12-16 Dinh Trung Hoa

We present a simple short proof of the Fundamental Theorem of Algebra, without complex analysis and with a minimal use of topology. It can be taught in a first year calculus class.

Complex Variables · Mathematics 2021-01-29 Ricardo Pérez-Marco

Let $F$ be a number field and $\mathcal{O}_F$ its ring of integers. We use Chevalley's ambiguous class number formula to give a criterion for the non-existence of solutions to the unit equation $\lambda + \mu = 1$, $\lambda, \mu \in…

Number Theory · Mathematics 2020-03-17 Nuno Freitas , Alain Kraus , Samir Siksek

We review Andr\'e Luiz Barbosa's paper "P != NP Proof," in which the classes P and NP are generalized and claimed to be proven separate. We highlight inherent ambiguities in Barbosa's definitions, and show that attempts to resolve this…

Computational Complexity · Computer Science 2017-11-21 Jackson Abascal , Shir Maimon

By changing variables in a suitable way and using dominated convergence methods, this note gives a short proof of Stirling's formula and its refinement.

Classical Analysis and ODEs · Mathematics 2013-12-19 Hongwei Lou

In this paper we improve drastically the estimate for the multiplicity of a binary recurrence. The main contribution comes from an effective version of the Faltings' Product Theorem.

Number Theory · Mathematics 2009-10-30 Roberto G. Ferretti

We give an infinite number of proofs of Pythagoras theorem.Some can be classified as `self-similar proofs'.

History and Overview · Mathematics 2025-09-04 Gaurav Bhatnagar , Sagar Shrivastava

We give a simple proof of a recently result concerning Hardy $q$-inequalities.

Classical Analysis and ODEs · Mathematics 2014-12-18 Peng Gao

We prove the Aharoni Berger Conjecture

Combinatorics · Mathematics 2019-04-16 Vladimir Blinovsky

We claim to resolve the P=?NP problem via a formal argument for P=NP.

Computational Complexity · Computer Science 2007-05-23 Selmer Bringsjord , Joshua Taylor

We are interested in formulas for the number of elements in certain classes of numerical semigroups

Combinatorics · Mathematics 2014-10-28 Ernst Kunz , Rolf Waldi