Elementary Differential Singularities of Three-Dimensional Nijenhuis Operators
Differential Geometry
2025-03-19 v1
Abstract
In the paper, three-dimensional Nijenhuis operators are studied that have differential singularities, i.e., such points at which the coefficients of the characteristic polynomials are dependent. The case is studied in which the differentials of all invariants of the Nijenhuis operator are proportional, as well as the case when two invariants are functionally independent and the third defines a fold-type singularity. In particular, new examples of three-dimensional Nijenhuis operators with singularities of the specified type are constructed.
Keywords
Cite
@article{arxiv.2503.11865,
title = {Elementary Differential Singularities of Three-Dimensional Nijenhuis Operators},
author = {Dinmukhammed Akpan and Andrei Oshemkov},
journal= {arXiv preprint arXiv:2503.11865},
year = {2025}
}