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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Given a volume preserving dynamical system with non-compact phase space, oneis sometimes interested in special subsets of its wandering set. One examplefrom celestial mechanics is the set of initial values leading to collision.Another one is the set of initial values of semi-orbits, whose asymptoticvelocity does not exist as a limit. We introduce techniques that can be helpfulin showing that these sets are of measure zero: by defining a sequence ofhypersurfaces, that are eventually hit by each of those semi-orbits and whosetotal surface area decreases to zero.

Improbability of Wandering Orbits Passing Through a Sequence of Poincar\'e Surfaces of Decreasing Size