English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

For integrable Hamiltonian systems with two degrees of freedom whoseHamiltonian vector fields have incomplete flows, an analogue of the Liouvilletheorem is established. A canonical Liouville fibration is defined by means ofan "exact" 2-parameter family of flat polygons equipped with certain pairing ofsides. For the integrable Hamiltonian systems given by the vector field$v=(-\partial f/\partial w, \partial f/\partial z)$ on ${\mathbb C}^2$ where$f=f(z,w)$ is a complex polynomial in 2 variables, geometric properties ofLiouville fibrations are described.

The Liouville-type theorem for integrable Hamiltonian systems with incomplete flows