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Hamiltonian systems, symplectic flows, classical integrable systems

5 votes

Why are the following varieties symplectomorphic?

In Hirzebruch's original paper (F. Hirzebruch, Über eine Klasse von einfachzusammenhängenden komplexen Mannigfaltigkeiten, Math. Ann. 124 (1951), 77–86.) there are polynomial (or rational) formulas f …
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