Abstract
We consider the recursion operator approach to the soliton equations related to a generalized Zakharov-Shabat auxiliary linear system in pole gauge on the Lie algebra $A_2=\mathfrak{sl}(3,\mathbb{C})$ and show that the recursion operator can be identified with the dual to a Nijenhuis tensor for a Poisson-Nijenhuis structure on the manifold of potentials.
Citation
Alexandar B. Yanovski. "Geometric Interpretation of the Recursion Operators for the Generalized Zakharov-Shabat System in Pole Gauge on the Lie Algebra $A_2$." J. Geom. Symmetry Phys. 23 97 - 111, 2011. https://doi.org/10.7546/jgsp-23-2011-97-111
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