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The uncountability of the real numbers is one of their most basic properties, known (far) outside of mathematics. Cantor's 1874 proof of the uncountability of the real numbers even appears in the very first paper on set theory, i.e. a…

Logic · Mathematics 2022-06-28 Sam Sanders

Using iterated Sacks forcing and topological games, we prove that the existence of a totally imperfect Menger set in the Cantor cube with cardinality continuum is independent from ZFC. We also analyze the structure of Hurewicz and consonant…

Logic · Mathematics 2025-10-28 Valentin Haberl , Piotr Szewczak , Lyubomyr Zdomskyy

This paper reviews the functional aspects of statistical learning theory. The main point under consideration is the nature of the hypothesis set when no prior information is available but data. Within this framework we first discuss about…

Machine Learning · Statistics 2016-11-25 Stephane Canu , Xavier Mary , Alain Rakotomamonjy

Pirashvili's Dold-Kan type theorem for finite pointed sets follows from the identification in terms of surjections of the morphisms between the tensor powers of a functor playing the role of the augmentation ideal; these functors are…

Algebraic Topology · Mathematics 2020-09-24 Geoffrey Powell , Christine Vespa

We present a set of lectures on topics of advanced calculus in one real and complex variable with several new results and proofs on the subject, specially with detailed proof-always missing in the literature - of the Cissoti explicitly…

History and Overview · Mathematics 2012-07-04 Luiz C L Botelho

We prove that every bounded, positive, irreducible, stochastically continuous semigroup on the space of bounded, measurable functions which is strong Feller, consists of kernel operators and possesses an invariant measure converges…

Functional Analysis · Mathematics 2012-02-03 Moritz Gerlach , Robin Nittka

In this paper we obtain new theorems about classes of exceptional sets for the Selberg's theorem C (1942). Our theorems, as based on discrete method, are not accessible for Karatsuba's theory (1984) since this theory is a continuous theory.…

Classical Analysis and ODEs · Mathematics 2014-09-17 Jan Moser

We show that Fueter's theorem holds for a more general class of quaternionic functions than those constructed by the Fueter's method.

Analysis of PDEs · Mathematics 2007-05-23 Daniel Alayon-Solarz

The first and second representation theorems for sign-indefinite, not necessarily semi-bounded quadratic forms are revisited. New straightforward proofs of these theorems are given. A number of necessary and sufficient conditions ensuring…

Functional Analysis · Mathematics 2012-06-15 Luka Grubisic , Vadim Kostrykin , Konstantin A. Makarov , Kresimir Veselic

Building on the concept of pretentious multiplicative functions, we give a new and largely elementary proof of the best result known on the counting function of primes in arithmetic progressions.

Number Theory · Mathematics 2019-02-20 Dimitris Koukoulopoulos

These are lecture notes from a course I gave at the University of Wisconsin during the Spring semester of 1993. Part 1 is concerned with Borel hierarchies. Section 13 contains an unpublished theorem of Fremlin concerning Borel hierarchies…

Logic · Mathematics 2009-09-25 Arnold Miller

We present counterexamples to Fujita's conjecture in positive characteristics. Precisely, we show that over any algebraically closed field $k$ of characteristic $p>0$ and for any positive integer $m$, there exists a smooth projective…

Algebraic Geometry · Mathematics 2022-01-06 Yi Gu , Lei Zhang , Yongming Zhang

We prove a stronger version of Jarden's Theorem for recurrence of powers of recursive functions

Number Theory · Mathematics 2013-07-02 Cheng Lien Lang , Mong Lung Lang

In the preceding Comment it is alleged that a "hidden loophole" in the proof of Hara's theorem has been found, which purportedly invalidates the conclusions of the paper commented upon. I show that there is no such loophole in the…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. Dmitrašinović

This is an extended Reply to Comment by A. Sergeev, M.Y. Reizer, and V. Mitin [arXiv:0906.2389] on our Letter [Phys. Rev. Lett. 102, 067001 (2009)]. We explicitly demonstrate that all claims by Sergeev et al. are completely unfounded,…

Superconductivity · Physics 2010-12-21 M. N. Serbyn , M. A. Skvortsov , A. A. Varlamov

We show that there are no C^1-stable intersections of regular Cantor sets.

Dynamical Systems · Mathematics 2009-01-21 Carlos Gustavo Tamm de Araujo Moreira

In this paper we study the generating function f(t) for the sequence of the moments \int_{\gamma}P^i(z)q(z)d z, i\geq 0, where P(z),q(z) are rational functions of one complex variable and \gamma is a curve in C. We calculate an analytical…

Complex Variables · Mathematics 2009-10-13 F. Pakovich

For sets $A, B\subset \mathbb N$, their sumset is $A + B := \{a+b: a\in A, b\in B\}$. If we cannot write a set $C$ as $C = A+B$ with $|A|, |B|\geq 2$, then we say that $C$ is $\textit{irreducible}$. The question of whether a given set $C$…

We study power-set operations on classes of trees and tree algebras. Our main result consists of a distributive law between the tree monad and the upwards-closed power-set monad, in the case where all trees are assumed to be linear. For…

Formal Languages and Automata Theory · Computer Science 2024-02-14 Achim Blumensath

In this paper we attempt to prove Lehmer's conjecture on Ramanujan's tau function, namely tau(n) is never zero, for each n larger than zero by investigating the additive group structure attached to tau(n) with the aid of unique…

Number Theory · Mathematics 2016-06-21 Will Y. Lee