Dear colleagues,

In connection with the situation in Ukraine we have to postpone sessions of the seminar Dynamical systems and PDEs for some undetermined time.
We will let you know when the seminar restarts.

Best regards,
S. Kuksin, D. Treschev, A. Dymov

【 在 vinbo 的大作中提到: 】
: Date:  2 March 2022,  16:00 (CET) = 18:00 (Moscow time).
: Speaker & title:   Alexey Bolsinov (Loughborough University), Symplectic invariants of integrable Hamiltonian systems
: Abstract: Two integrable systems are called symplectically equivalent, if there exists a symplectic diffeomorphism between the corresponding phase spaces that sends Liouville tori of one system to those of the other.  This review talk will be devoted to symplectic invariants of integrable systems, i.e. those which allow us to decide whether or not two given systems are symplectically equivalent.  My goal will be to explain that in many cases such invariants can be reconstructed from action variables.
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