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Sibirsk. Mat. Zh., 2025 Volume 66, Number 5, Pages 929–936 (Mi smj7989)

Generalized Beltrami fields. Exact solutions

M. V. Neshchadim

Sobolev Institute of Mathematics, Novosibirsk, Russia

Abstract: We study generalized Beltrami fields defined as solutions to the system $\operatorname{rot}^n A=\lambda A$, where $\lambda$ is a function and $A=(P,Q,R)$ is a vector-valued function of the variables $(x,y,z)$, $n\in {\Bbb N}$. For $\lambda=1$ and arbitrary natural $n$, the system is reduced to a completely integrable form, with the result depending on the parity of $n$. For $n=1$ and an arbitrary function $\lambda$, the system is also reduced to a completely integrable form.

Keywords: generalized Beltrami fields, overdetermined systems of partial differential equations, compatibility conditions.

UDC: 517.9

MSC: 35R30

Received: 25.01.2025
Revised: 12.03.2025
Accepted: 25.04.2025

DOI: 10.33048/smzh.2025.66.513


 English version:
Siberian Mathematical Journal, 2025, 66:5, 1235–1241


© Steklov Math. Inst. of RAS, 2026