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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Recently, classical results on completeness of trajectories of Hamiltoniansystems obtained at the beginning of the seventies, have been revisited,improved and applied to Lorentzian Geometry. Our aim here is threefold: to giveexplicit proofs of some technicalities in the background of the specialists, toshow that the introduced tools allow to obtain more results for thecompleteness of the trajectories, and to apply these results to thecompleteness of spacetimes that generalize classical plane and pp-waves.

Remarks on the completeness of trajectories of accelerated particles in Riemannian manifolds and plane waves