Phone: 89309593140
Keywords: Tensor field, Nijenhuis tensor, Nijenhuis operators, Hamiltonian systems

Subject:

Differential geometry, integrable systems, Nijenhuis geometry

Main publications:

1. Akpan D, “Singularities of two-dimensional Nijenhuis operators”, European Journal of MathematicsThis link is disabled., 8:4 (2022), 1328–1340
2. Akpan D., “Almost Differentially Nondegenerate Nijenhuis Operators”, Russian Journal of Mathematical PhysicsThis link is disabled., 29:4 (2022), 413–416
3. Akpan D., Oshemkov A., “Elementary Differential Singularities of Three-Dimensional Nijenhuis Operators”, Russian Journal of Mathematical Physics, 30:4 (2023), 425–431

Publications in Math-Net.Ru

Presentations in Math-Net.Ru

Personal pages:

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• ISTINA
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Organisations:

• Institute of Mathematics, Ministry of Education and Science of the Republic of Kazakhstan, Almaty
• Lomonosov Moscow State University