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We obtain an almost sure limit theorem for the maximum of nonstationary random fields under some dependence conditions.

Probability · Mathematics 2016-01-07 Luísa Pereira , Zhongquan Tan

This article establishes a real-variable argument for Zygmund's theorem on almost everywhere convergence of strong arithmetic means of partial sums of Fourier series on $\mathbb{T}$, up to passing to a subsequence. Our approach extends to,…

Classical Analysis and ODEs · Mathematics 2013-04-15 Bobby Wilson

We prove an effective version of the Oppenheim conjecture with a polynomial error rate. The proof is based on an effective equidistribution theorem which in turn relies on recent progress towards restricted projection problem.

Dynamical Systems · Mathematics 2023-05-30 Elon Lindenstrauss , Amir Mohammadi , Zhiren Wang , Lei Yang

This is an introduction to some of the most probabilistic aspects of free probability theory.

Probability · Mathematics 2016-09-07 Philippe Biane

A popular scientific contribution should not contradict any established facts and ought to be understandable. I complied with both these requirements and am offering a sufficiently full introduction to probability theory. Furthermore, I…

History and Overview · Mathematics 2018-02-13 Oscar Sheynin

We prove an easy statement about inhomogeneous approximation in metric theory of Diophantine Approximation.

Number Theory · Mathematics 2023-05-23 Nikolay Moshchevitin

We prove a uniformization theorem in complex algebraic geometry.

Algebraic Geometry · Mathematics 2010-08-11 Robert Treger

An equivalent but useful version on the Homological Nerve Theorem is proved.

Algebraic Topology · Mathematics 2016-09-13 Luis Montejano

General acceptance of a mathematical proposition $P$ as a theorem requires convincing evidence that a proof of $P$ exists. But what constitutes "convincing evidence?" I will argue that, given the types of evidence that are currently…

History and Overview · Mathematics 2017-04-11 Jeffrey C. Jackson

We give a concise proof of the fundamental theorem of smoothing theory in the special case when a smoothing exists.

Algebraic Topology · Mathematics 2010-07-09 John R. Klein , Bruce Williams

This paper establishes the argmin of a random objective function to be unique almost surely. This paper first formulates a general result that proves almost sure uniqueness without convexity of the objective function. The general result is…

Econometrics · Economics 2019-02-20 Gregory Cox

I provide simplified proofs for each of the following fundamental theorems regarding selection principles: 1. The Quasinormal Convergence Theorem, due to the author and Zdomskyy, asserting that a certain, important property of the space of…

General Topology · Mathematics 2024-06-05 Boaz Tsaban

The purpose of this note is to give an accessible proof of Moliens Theorem in Invariant Theory, in the language of today's Linear Algebra and Group Theory, in order to prevent this beautiful theorem from being forgotten.

General Mathematics · Mathematics 2017-01-18 Holger Schellwat

We prove that every transitive and non minimal semigroup with dense minimal points is sensitive. When the system is almost open, we obtain a generalization of this result.

Dynamical Systems · Mathematics 2021-06-09 J. Iglesias , A. Portela

We give simple proofs, under minimal hypotheses, of the Weak Law of Large Numbers and the Central Limit Theorem for independent identically distributed random variables. These proofs use only the elementary calculus, together with the most…

Probability · Mathematics 2012-07-26 Nicholas Pippenger

We give a new proof of Tietze Theorem on the convergence of infinite semi-regular continued fractions.

Number Theory · Mathematics 2022-03-11 Daniel Duverney , Iekata Shiokawa

In this paper, we provide an easy proof of the Four-colour Theorem in a special case indeed.

General Mathematics · Mathematics 2018-07-09 Bin Shen

Consider a walk in the plane made of $n$ unit steps, with directions chosen independently and uniformly at random at each step. Rayleigh's theorem asserts that the probability for such a walk to end at a distance less than 1 from its…

Combinatorics · Mathematics 2012-06-13 Olivier Bernardi

Approximations to the Kruskal-Katona theorem are stated and proven. These approximations are weaker than the theorem, but much easier to work with numerically.

Combinatorics · Mathematics 2010-10-13 Andrew Frohmader

We give a short proof of a strengthening of the Maximal Ergodic Theorem which also immediately yields the Pointwise Ergodic Theorem.

Dynamical Systems · Mathematics 2007-05-23 Michael Keane , Karl Petersen