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We prove new cases of Fontaine-Mazur conjecture on two-dimensional Galois representations over Q when the residual representation is reducible. Our approach is via a semi-simple local-global compatibility of the completed cohomology and a…

Number Theory · Mathematics 2021-09-06 Lue Pan

We put a new conjecture on primes from the point of view of its binary expansions and make a step towards justification.

Number Theory · Mathematics 2007-06-11 Vladimir Shevelev

A Mazurkiewicz set is a plane subset that intersect every straight line at exactly two points, and a Sierpi\'{n}ski-Zygmund function is a function from $\mathbb{R}$ into $\mathbb{R}$ that has as little of the standard continuity as…

Logic · Mathematics 2025-07-02 Cheng-Han Pan

We prove necessary and sufficient conditions for the validity of Whitney's extension theorem in the ultradifferentiable Roumieu setting with controlled loss of regularity.

Classical Analysis and ODEs · Mathematics 2018-10-26 Armin Rainer , Gerhard Schindl

In this note we prove the complex counterpart of the S-inequality for complete Reinhardt sets. In particular, this result implies that the complex S-inequality holds for unconditional convex sets.

Probability · Mathematics 2013-09-20 Piotr Nayar , Tomasz Tkocz

We construct a Dirac morphism and prove that if this Dirac morphism is invertible, then the isomorphism conjecture for non-connective algebraic K-theory holds true.

Algebraic Topology · Mathematics 2012-01-09 Marcelo Gomez Morteo

Let k be an algebraically closed field of characteristic 0, let X=P^1\times A^N and let f be a rational endomorphism of X given by (x,y)--->(g(x), A(x)y), where g is a rational function, while A is an N-by-N matrix with entries in k(x). We…

Number Theory · Mathematics 2018-03-13 Dragos Ghioca , Junyi Xie , with an appendix written by Michael Wibmer

All counterexamples of Pinchuk type to the strong real Jacobian conjecture are shown to have rational function field extensions of degree six with no nontrivial automorphisms.

Algebraic Geometry · Mathematics 2013-11-18 L. Andrew Campbell

Rudyak's conjecture states that for any degree one map $f:M\to N$ between oriented closed manifolds there is the inequality $\cat (M)\ge \cat(N)$ for the Lusternik-Shnirelmann category. We prove the Rudyak's conjecture for $ n$-dimensional…

Algebraic Topology · Mathematics 2026-04-13 Alexander Dranishnikov , Deep Kundu

Based on the structure of Fibonacci sequence, we give a new proof for the irrationality exponents of the Fibonacci real numbers. Moreover, we obtain all the irrationality exponents of the real numbers corresponding to the differences of…

Number Theory · Mathematics 2016-02-02 Ying-jun Guo , Zhi-xiong Wen , Jie-meng Zhang

We make plausible the existence of counterexamples to the Riemann hypothesis located in the neighbourhood of unusually large peaks of $\vert \zeta \vert$. The main ingredient in our argument is an identity which links the zeros of a…

Number Theory · Mathematics 2017-07-07 Philippe Blanc

In this paper, we propose the Fourier Discrepancy Function, a new discrepancy to compare discrete probability measures. We show that this discrepancy takes into account the geometry of the underlying space. We prove that the Fourier…

Machine Learning · Statistics 2021-11-19 Auricchio Gennaro , Codegoni Andrea , Gualandi Stefano , Zambon Lorenzo

We consider mappings that distort the modulus of families of paths in the opposite direction in the manner of Poletsky's inequality. Here we study the case when the mappings are not closed, in particular, they do not preserve the boundary…

Complex Variables · Mathematics 2024-09-06 Evgeny Sevost'yanov , Victoria Desyatka Zarina Kovba

We establish the exact overlaps conjecture for iterated functions systems on the real line with algebraic contractions and arbitrary translations.

Dynamical Systems · Mathematics 2020-01-15 Ariel Rapaport

The polynomial Fre\u{\i}man--Ruzsa conjecture is a fundamental open question in additive combinatorics. However, over the integers (or more generally $\mathbb{R}^d$ or $\mathbb{Z}^d$) the optimal formulation has not been fully pinned down.…

Number Theory · Mathematics 2017-09-29 Freddie Manners

We formulate a conjecture classifying algebraic solutions to (possibly non-linear) algebraic differential equations, in terms of the primes appearing in the denominators of the coefficients of their Taylor expansion at a non-singular point.…

Algebraic Geometry · Mathematics 2025-01-24 Yeuk Hay Joshua Lam , Daniel Litt

We prove that several versions of the Tietze extension theorem for functions with moduli of uniform continuity are equivalent to WKL_0 over RCA_0. This confirms a conjecture of Giusto and Simpson that was also phrased as a question in…

Logic · Mathematics 2016-02-18 Paul Shafer

Let T be Takagi's continuous but nowhere-differentiable function. Using a representation in terms of Rademacher series due to N. Kono, we give a complete characterization of those points where T has a left-sided, right-sided, or two-sided…

Classical Analysis and ODEs · Mathematics 2010-09-08 Pieter C. Allaart , Kiko Kawamura

A generalization of Young's inequality for convolution with sharp constant is conjectured for scenarios where more than two functions are being convolved, and it is proven for certain parameter ranges. The conjecture would provide a unified…

Functional Analysis · Mathematics 2011-08-09 Sergey Bobkov , Mokshay Madiman , Liyao Wang

The well known Andrews-Curtis Conjecture [2] is still open. In this paper, we establish its finite version by describing precisely the connected components of the Andrews-Curtis graphs of finite groups. This finite version has independent…

Group Theory · Mathematics 2011-03-08 Alexandre V. Borovik , Alexander Lubotzky , Alexei G. Myasnikov
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