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Related papers: A counterexample to the Arakelyan Conjecture

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We construct an entire function $f$ with only three singular values whose order of growth can change under a quasiconformal equivalence. This is a counterexample to the Order Conjecture in the Speiser class ${\mathcal S}$ of entire…

Complex Variables · Mathematics 2020-07-13 Christopher J. Bishop

In [2] the author claims to provide a counterexample to a result in a recent paper [1]. In this note, we prove that the details of his example is false and this example is compatible with our result in [1] and so is not a countreexample.

Functional Analysis · Mathematics 2025-07-03 Elmiloud Chil

In this paper we give a counterexample to the conjecture: Let $S\in{\rm SInn}$. Then $z\cdot S$ is onto $U$.

Complex Variables · Mathematics 2022-05-26 Ronen Peretz

The article provides a counterexample to a conjecture by Blocki-Zwonek.

Complex Variables · Mathematics 2015-07-20 John Erik Fornæss

Arakelian's classical approximation theorem \cite{Ar} gives necessary and sufficient conditions such that functions can be uniformly approximated in (unbounded) closed sets $F\subset \mathbb{C}$ by entire functions. The conditions are…

Complex Variables · Mathematics 2025-12-02 Grigorios Fournodavlos , Vassili Nestoridis , Spyros Pasias

Another counter-example to Dirac's Conjecture is presented, which resembles the Cawley model but is so modified as to include second class constraints. The arbitrary function in the general solution to the defining equations of momenta…

Classical Physics · Physics 2019-02-26 Takayuki Hori

We give counterexamples to Okounkov's log-concavity conjecture for Littlewood-Richardson coefficients.

Representation Theory · Mathematics 2007-05-23 Calin Chindris , Harm Derksen , Jerzy Weyman

We give an explicit counterexample to an entanglement inequality suggested in a recent paper [quant-ph/0005126] by Benatti and Narnhofer. The inequality would have had far-reaching consequences, including the additivity of the entanglement…

Quantum Physics · Physics 2007-05-23 R. F. Werner , K. G. H. Vollbrecht

We combine several folklore observations to provide a working framework for iterating constructions which contradict the axiom of choice. We use this to define a model in which any kind of structural failure must fail with a proper class of…

Logic · Mathematics 2021-07-26 Asaf Karagila

An example of a cocomplete abelian category that is not complete is constructed.

Category Theory · Mathematics 2018-05-29 Jeremy Rickard

We give a counterexample to a recently conjectured variant of the Penrose inequality.

Differential Geometry · Mathematics 2026-04-30 Sven Hirsch , Yipeng Wang

We show that the natural directed analogues of the KKL theorem [KKL88] and the Eldan--Gross inequality [EG20] from the analysis of Boolean functions fail to hold. This is in contrast to several other isoperimetric inequalities on the…

Combinatorics · Mathematics 2022-10-06 Quentin Dubroff , Shivam Nadimpalli , Bhargav Narayanan

The paper presents a counterexample to the Hodge conjecture.

General Mathematics · Mathematics 2020-07-28 Jorma Jormakka

In this very short note, we give a counterexample to a recent conjecture of Gilmer which would have implied the union-closed conjecture.

Combinatorics · Mathematics 2022-11-23 David Ellis

In this paper, we give a counter-example, in the general case, Kronecker theorem will derive contradiction. Kronecker theorem be correct after removing some conditions.

General Mathematics · Mathematics 2023-05-16 JinHua Fei

We provide a proof and a counterexample to two conjectures made by N. Kuznetsov.

Analysis of PDEs · Mathematics 2023-11-21 Florian Oschmann

In this note, we discuss recently discovered counterexamples to Mordell's Pellian Equation Conjecture and the Ankeny-Artin-Chowla-Conjecture. We provide a verification of the counterexample to Mordell's Pellian Equation Conjecture that can…

Number Theory · Mathematics 2025-04-30 Andreas Reinhart

We give a counterexample of Morrison's cone conjecture for a strict Calabi-Yau threefold.

Algebraic Geometry · Mathematics 2022-11-21 Keiji Oguiso

In this paper we use computational methods to disprove a conjecture by Alaoglu and Erd\H{o}s regarding the superabundant numbers.

Number Theory · Mathematics 2020-09-09 Tibor Burdette , Ian Stewart

We construct the counter-example for polynomial version of Sarnak's conjecture for minimal systems, which assets that the M\"obius function is linearly disjoint from subsequences along polynomials of deterministic sequences realized in…

Dynamical Systems · Mathematics 2021-05-21 Zhengxing Lian , Ruxi Shi
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