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Hamiltonian systems, symplectic flows, classical integrable systems
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Complement of bifurcation variety
I am reading a seminal paper of Arnold "Normal forms of functions near degenerate critical points, the Weyl group of $A_k$, $D_k$, $E_k$ and lagrangian singularities".
Let $f\colon \mathbb{C}^n\to \m …