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We present a relative form of the Toponogov comparison theorem.

Differential Geometry · Mathematics 2023-05-24 Jianming Wan

This paper has been withdrawn by the author due to an error in the main proof (thanks to Carlos D'Andrea)

Commutative Algebra · Mathematics 2007-05-23 P. Ullrich

In this paper we prove the WALA conjecture.

Metric Geometry · Mathematics 2026-05-29 Andrea Merlo

In this note, we show that a "Toy Conjecture" made by (Boyle, Ishai, Pass, Wootters, 2017) is false, and propose a new one. Our attack does not falsify the full ("non-toy") conjecture in that work, and it is our hope that this note will…

Cryptography and Security · Computer Science 2021-09-17 Keller Blackwell , Mary Wootters

We prove a variation of Gronwall's lemma.

Classical Analysis and ODEs · Mathematics 2009-01-09 Quang-Cuong Pham

In this paper, we formulate and prove several variants of the Erd\H{o}s-Tur\'{a}n additive bases conjecture.

General Mathematics · Mathematics 2026-03-13 Theophilus Agama

The purpose of this note is to correct an error in a paper of M. Cowling, G. Fendler and J.J.F. Fournier, and to give a counterexample to a conjecture of J.-L. Rubio de Francia.

Classical Analysis and ODEs · Mathematics 2007-05-23 Michael Cowling , Terence Tao

Robin's Conjecture is strengthened, deformed, and proved. Nicolas conjecture follows.

Mathematical Physics · Physics 2009-07-19 Boris A. Kupershmidt

In this article we develop counterexamples to the Hasse principle using only techniques from undergraduate number theory and algebra. By keeping the technical prerequisites to a minimum, we hope to provide a path for nonspecialists to this…

Number Theory · Mathematics 2011-09-01 Wayne Aitken , Franz Lemmermeyer

Using Singular Rescaling We Prove Some Bifurcation Results. This note Presents short proofs for some Bifurcation results which had been appeared with other authors.

Dynamical Systems · Mathematics 2024-04-16 Ali Taghavi

We give a counterexample to the PIA (precise inversion of adjunction) conjecture for minimal log discrepancies. We also give a counterexample to the LSC conjecture for families.

Algebraic Geometry · Mathematics 2026-05-01 Yusuke Nakamura , Kohsuke Shibata

We give a simple proof of a recent result by J. Schleischitz dealing with a counterexample to the uniform Littlewood conjecture. Our construction is based on simple properties of Fibonacci numbers.

Number Theory · Mathematics 2026-05-27 Nikolay Moshchevitin

In this note I provide two extensions of a particular case of the classical Poncelet theorem.

Algebraic Geometry · Mathematics 2020-10-07 Ciro Ciliberto

We provide a counterexample to the Lagrangian Poincar\'e recurrence conjecture of Ginzburg and Viterbo in all dimensions $6$ and greater.

Symplectic Geometry · Mathematics 2024-10-10 Filip Broćić , Egor Shelukhin

A short, fairly self-contained proof is given of the Poincar\'e Conjecture. In the previous version there was an error on Page 8. This gap has now been filled.

General Mathematics · Mathematics 2025-09-26 M. J. Dunwoody

In this short note we improve the best to date bound in Godbersen's conjecture, and show some implications for unbalanced difference bodies.

Metric Geometry · Mathematics 2017-03-21 Shiri Artstein-Avidan

We present new counterexamples, which provide stronger limitations to sums-differences statements than were previously known. The main idea is to consider non-uniform probability measures.

Combinatorics · Mathematics 2014-10-06 Marius Lemm

We report the results of our empirical investigations on the Bateman-Horn conjecture. This conjecture, in its commonly known form, produces rather large deviations when the polynomials involved are not monic. We propose a modified version…

Number Theory · Mathematics 2019-06-11 Weixiong Li

In this note we investigate the Cheltsov--Rubinstein conjecture. We show that this conjecture does not hold in general and some counterexamples will be presented.

Algebraic Geometry · Mathematics 2019-07-11 Kento Fujita , Yuchen Liu , Hendrik Süß , Kewei Zhang , Ziquan Zhuang

Recently GM Sofi & SA Shabir [arXive: 1903.01850v2 [math.GM] 6 Mar 2019] made an attempt to prove the Sendov's conjecture. But unfortunately the proof is not correct. In this note, we discuss the fallacy in the proof.

Complex Variables · Mathematics 2019-03-12 N. A. Rather , Suhail Gulzar
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