arXiv subjects

Kevin Zwart

Publications and source records attributed to Kevin Zwart.

4 recordsLinked to original sources

arXiv2025

Mathieu's approach to the Jacobian Conjecture

In this paper, we give an expository presentation of the paper of Olivier Mathieu. The paper of Mathieu proves that a Lie group-theoretic conjecture implies the Jacobian Conjecture. To give Mathieu's proof, we first review the required literature on representation theory in an expository way. We continue to prove some results on the irreducible subrepresentations of the tensor algebra of the standard representation of $SL(N,\mathbb{C})$. The last part of the paper is dedicated to Mathieu's proof.

math.RT↗

arXiv2025

An addendum on the Mathieu Conjecture for $SU(N)$, $Sp(N)$ and $G_2$

In this paper, we sharpen results obtained by the author in 2023. The new results reduce the Mathieu Conjecture on $SU(N)$ (formulated for all compact connected Lie groups by O. Mathieu in 1997) to a conjecture involving only functions on $\mathbb{R}^n\times (S^1)^m$ with $n,m$ non-negative integers instead of involving functions on $\mathbb{R}^n\times (S^1\setminus\{1\})^m$. The proofs rely on a more recent work of the author (2024) and a specific $KAK$ decomposition. Finally, with these results we can also improve the results on the groups $Sp(N)$ and $G_2$ in the latter paper, since they relied on the construction introduced in the 2023 paper.

math.GR↗

arXiv2024

On the Mathieu Conjecture for $Sp(N)$ and $G_2$

As a direct continuation of K. Zwart, arXiv:2304.02648, which is built on the work of M. M\"uger and L. Tuset, we reduce the Mathieu conjecture, formulated by O. Mathieu in 1997, for $Sp(N)$ and $G_2$ to a conjecture involving functions over $\mathbb{R}^n\times (S^1)^m$ with $n,m\in\mathbb{N}_0$. The proofs rely on Euler-style parametrizations of these groups, a specific version of the $KAK$ decomposition, which we discuss and prove.

math.GR↗

arXiv2023

On the Mathieu Conjecture for $SU(N)$ and $SO(N)$

Building on work of M. M\"uger and L. Tuset, we reduce the Mathieu conjecture, formulated by O. Mathieu in 1997, for $SU(N)$ to a simpler conjecture in purely abelian terms. We sketch a similar reduction for $SO(N)$. The proofs rely on Euler-style parametrizations of these groups, which we discuss including proofs.

math.GR↗