Geodesic
Analytic classification of singularities in the integrable Kowalevski–Yehia case
Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, no. 4 (2010), pp. 25-30 Cet article a éte moissonné depuis la source Math-Net.Ru

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In the paper we give analytic classification of singularities of the momentum map for integrable Kowalevski–Yehia case in rigid body dynamics.
Keywords: integrable Hamiltonian system, momentum map, bifurcation diagram, type of non-degenerate singularity. 
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P. E. Ryabov. Analytic classification of singularities in the integrable Kowalevski–Yehia case. Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, no. 4 (2010), pp. 25-30. http://geodesic.mathdoc.fr/item/VUU_2010_4_a2/

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