most citedPseudo-rotations with sufficiently Liouvillean rotation number are C^0-rigid

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math.SG2024

Spectral invariants for non-compactly supported Hamiltonians on the disc, and an application to the mean action spectrum

Barney Bramham, Abror Pirnapasov

For a symplectic isotopy on the two-dimensional disc we show that the classical spectral invariants of Viterbo [20] can be extended in a meaningful way to {\it non-compactly} suppo…